Don't update to Bootloader S7 ESL6 update (december 2019 security patch) - Samsung Galaxy S7 Edge Questions and Answers

Just to tell the fellow users of S7 edge .. don't update to the newest december security patch due to huge battery drain by android OS, kernel and system (samsung process)
The new bootloader is also version 7 which means you cannot go back once upgraded..
Previous firmware S6 ESH5 comparison with S7ESL6
Avg battery life of 1 day (a bit more) / Avg SOT : around 7 hours
Usage: medium usage.. (no gaming/youtube/video.. mainly chatting , fb usage and whatsapp.. and light/medium browsing on chrome most apps put to always sleep.. no phone calls (only using wifi), no auto sync, aod and location services disabled and using dual sim - dual standby) on S6ESH5
Avg battery life of less then half a day / Avg SOT : less then 4 hours..
Usage : very light usage (occasional browsing/chat.. no gaming/video/youtube.. very little browsing on chrome.. no calls.. most apps put to always sleep, no phone calls (only using wifi), no auto sync, aod and location services disabled and using dual sim - dual standby) on S7ESL6
In my opinion.. this maybe the last and worst update for s7 series which samsung has clearly done that to push the users of this amazing device to upgrade to their newer phones.. I highly regret updating my phone.. and so i felt it necessary to warn others .. Good luck !

scheduled obsolescence is real and Samsung does it even with your best phones

If I'm not mistaken, Bootloader
---------- Post added at 05:11 AM ---------- Previous post was at 05:07 AM ----------
If I'm not mistaken, Bootloader

ESL9 ESLA seems better for battery even if I never had 7h sot of my s7egde's whole life :laugh:

BL got nothing to do with battery drains... it boots up operating system, if i'm not mistaken? Battery drain is related to CP.

ric69 said:
ESL9 ESLA seems better for battery even if I never had 7h sot of my s7egde's whole life :laugh:
Click to expand...
Click to collapse
Don't know about that version .. maybe its in eu region?
Really easy to get 7 hours SOT if you follow my usage scenario ?
Just put all apps which you dont want real time notifications to always sleep.. keep auto sync, bluetooth, location off unless you actively use any of them.. use more wifi instead of mobile data .. auto brightness always set on (quite low brightness on my phone) every other feature (whatever i forgot to mention here is also disabled)
ModX81 said:
BL got nothing to do with battery drains... it boots up operating system, if i'm not mistaken? Battery drain is related to CP.
Click to expand...
Click to collapse
I never said about bl draining or anything. I just said latest firmware is causing much battery drains and you cannot downgrade firmware because they updated bootloader to V7 in this latest firmware update
Sent from my S7 Edge using XDA Labs

shah22 said:
I never said about bl draining or anything. I just said latest firmware is causing much battery drains and you cannot downgrade firmware because they updated bootloader to V7 in this latest firmware update
Sent from my S7 Edge using XDA Labs
Click to expand...
Click to collapse
people will infer all kinds of things from posts, thats the drawback about forums. you say something and think that the person reading what you wrote will gather the same information from what you said that you were intending. Doesnt always happen that way tho for an example, this post that im currently writing might be interpreted as mean, condescending or rude and it isnt intended to be like that in the slightest. Que ser a ser a, i suppose have a great day!

Hi, does anyone knows how to check the bootloader and firmware version? i'd already update like 1 or 2 moths ago and I've had the phone for about 4 months, so i can't give a properly opinion about battery performance.
I was doubting if i should root or not and when finally got decided to do it I'd found your post, do you think that this could affect the rooting process? Cause did read in one of the last post from Arona67's guide on how to root a8 stock rom, a guy saying he messed up his phone flashing twrp with a new firmware downloaded from sammobile. I had been stuck with a Galaxy Alpha bootloader locked for a few years and would be a shame if i can't root again
Sorry if i misunderstand something, english is not my native language, and the last device i rooted was a cooper(Galaxy Ace)!, so you can imagine how outdated i am.
Thanks very much for your help and have a nice day :good:

Macydnah said:
Hi, does anyone knows how to check the bootloader and firmware version? i'd already update like 1 or 2 moths ago and I've had the phone for about 4 months, so i can't give a properly opinion about battery performance.
I was doubting if i should root or not and when finally got decided to do it I'd found your post, do you think that this could affect the rooting process? Cause did read in one of the last post from Arona67's guide on how to root a8 stock rom, a guy saying he messed up his phone flashing twrp with a new firmware downloaded from sammobile. I had been stuck with a Galaxy Alpha bootloader locked for a few years and would be a shame if i can't root again
Sorry if i misunderstand something, english is not my native language, and the last device i rooted was a cooper(Galaxy Ace)!, so you can imagine how outdated i am.
Thanks very much for your help and have a nice day :good:
Click to expand...
Click to collapse
Yes , updating bootloader is not the thing to do if you want to root, makes things difficult..
Bootloader number is written after G935FXX or G935FOJV after these terms its either S7 or U7 where 7 is bootloader version , 7 is the latest version.. the problem you cannot downgrade to a lower bootloader number firmware e.g 7 to 6 or 5..
Its easy to find the firmware details , use about > software information.. good luck..
Sent from my S7 Edge using Tapatalk

Hello.
Did anyone have problem installing twrp after update?
I tried the latest version of twrp and phone got in bootloop.
Thanks in advance.

Can you help me out

Tapas27s said:
Can you help me out
Click to expand...
Click to collapse
Still need help? What were you trying to do exactly?
Sent from my S7 Edge using XDA Labs

shah22 said:
Just to tell the fellow users of S7 edge .. don't update to the newest december security patch due to huge battery drain by android OS, kernel and system (samsung process)
The new bootloader is also version 7 which means you cannot go back once upgraded..
Previous firmware S6 ESH5 comparison with S7ESL6
Avg battery life of 1 day (a bit more) / Avg SOT : around 7 hours
Usage: medium usage.. (no gaming/youtube/video.. mainly chatting , fb usage and whatsapp.. and light/medium browsing on chrome most apps put to always sleep.. no phone calls (only using wifi), no auto sync, aod and location services disabled and using dual sim - dual standby) on S6ESH5
Avg battery life of less then half a day / Avg SOT : less then 4 hours..
Usage : very light usage (occasional browsing/chat.. no gaming/video/youtube.. very little browsing on chrome.. no calls.. most apps put to always sleep, no phone calls (only using wifi), no auto sync, aod and location services disabled and using dual sim - dual standby) on S7ESL6
In my opinion.. this maybe the last and worst update for s7 series which samsung has clearly done that to push the users of this amazing device to upgrade to their newer phones.. I highly regret updating my phone.. and so i felt it necessary to warn others .. Good luck !
Click to expand...
Click to collapse
Just so I understand, today latest official rom is on S8 not S7 right ? How is this compared to S7, same bad drain and performance as S7 ?
As a total noob,Im asking, can we revert to S6 somehow ? Isnt the bootloader something thats flashable with ODIN if you have the correct AP,BL,CP,CSC?

laurentiudll said:
Just so I understand, today latest official rom is on S8 not S7 right ? How is this compared to S7, same bad drain and performance as S7 ?
As a total noob,Im asking, can we revert to S6 somehow ? Isnt the bootloader something thats flashable with ODIN if you have the correct AP,BL,CP,CSC?
Click to expand...
Click to collapse
S8 binary if not worst, is the same as S7 one, same battery drains, even on a debloated stock rom..
And no you cannot revert to old binaries like s6 because bootloader cannot be downgraded..
But i read somewhere once that using bootloader and csc of new firmwares with ap and cp of older firmwares works (i never tested that myself so can't say if you could downgrade using this method)
The biggest problem of updating to a higher binary is that if that binary has serious issues like performance / battery drains then you couldnot downgrade to older binaries (no guaranteed methods) and oems sometimes cripple performance / introduce battery drains in older devices on purpose ..
Plus if your phone gets messed up, and you need combination binary to recover it then you are out of luck as latest combination binaries for s7 series are also not leaking into internet/or in general availability..
Sent from my SM-G935F using Tapatalk

shah22 said:
S8 binary if not worst, is the same as S7 one, same battery drains, even on a debloated stock rom..
And no you cannot revert to old binaries like s6 because bootloader cannot be downgraded..
But i read somewhere once that using bootloader and csc of new firmwares with ap and cp of older firmwares works (i never tested that myself so can't say if you could downgrade using this method)
The biggest problem of updating to a higher binary is that if that binary has serious issues like performance / battery drains then you couldnot downgrade to older binaries (no guaranteed methods) and oems sometimes cripple performance / introduce battery drains in older devices on purpose ..
Plus if your phone gets messed up, and you need combination binary to recover it then you are out of luck as latest combination binaries for s7 series are also not leaking into internet/or in general availability..
Sent from my SM-G935F using Tapatalk
Click to expand...
Click to collapse
Interesting.. I dont understand anything about binaries but i will attempt to install the following firmware looking at updato for reference firmware, so i can download it from SamFirm in a attempt to downgrade bootloader to obtaint that battery life youre talking about. It seems like this is what I need right ? It has S6 after the XX name. Can you please confirm? Also how do i check my current bootloader version ?
This is what I will attempt to install
Country / Region Romania
PDA G935FXXS6ESI4
Product Code ROM
CSC G935FROM6ESI4
Phone G935FXXS6ESI6
Later edit 1:
Interesting, I cant find the XXS6 firmware, even tho i input the correct data in SamFirm. It keeps giving me S8
https://imgur.com/ieM9CfK
Later edit 2:
after much researching it seems like SamFirm will only provide the latest firmware there is for your phone, nothing older. Since updato download speed is still trash I ended up on a website called Samfrew that has the older firmwares available for download at decent speeds (40minutes instead of 12 hours)
Will attempt to flash this:
PDA/AP Version G935FXXS6ESI4
CSC Version G935FROM6ESI4
MODEM/CP Version G935FXXS6ESI6
Region ROM — Romania
Build Date 2019-09-17
Changelist 14843133
OS Oreo
OS Version 8.0.0
Later edit 3:
Yep, it failed.
Attempting now a combination of "using bootloader and csc of new firmwares with ap and cp of older firmwares works" but i dont know exactly which is important out of the bl ap cp csc to have as XXS6
Later edit 4:
Total failure, nothing works. I lurked the forums and google for 2 hours now, no one said it concrete how they did it.. Where did you find the information ?

laurentiudll said:
Interesting.. I dont understand anything about binaries but i will attempt to install the following firmware looking at updato for reference firmware, so i can download it from SamFirm in a attempt to downgrade bootloader to obtaint that battery life youre talking about. It seems like this is what I need right ? It has S6 after the XX name. Can you please confirm? Also how do i check my current bootloader version ?
This is what I will attempt to install
Country / Region Romania
PDA G935FXXS6ESI4
Product Code ROM
CSC G935FROM6ESI4
Phone G935FXXS6ESI6
Later edit 1:
Interesting, I cant find the XXS6 firmware, even tho i input the correct data in SamFirm. It keeps giving me S8
https://imgur.com/ieM9CfK
Later edit 2:
after much researching it seems like SamFirm will only provide the latest firmware there is for your phone, nothing older. Since updato download speed is still trash I ended up on a website called Samfrew that has the older firmwares available for download at decent speeds (40minutes instead of 12 hours)
Will attempt to flash this:
PDA/AP Version G935FXXS6ESI4
CSC Version G935FROM6ESI4
MODEM/CP Version G935FXXS6ESI6
Region ROM — Romania
Build Date 2019-09-17
Changelist 14843133
OS Oreo
OS Version 8.0.0
Later edit 3:
Yep, it failed.
Attempting now a combination of "using bootloader and csc of new firmwares with ap and cp of older firmwares works" but i dont know exactly which is important out of the bl ap cp csc to have as XXS6
Later edit 4:
Total failure, nothing works. I lurked the forums and google for 2 hours now, no one said it concrete how they did it.. Where did you find the information ?
Click to expand...
Click to collapse
Binaries are just another word for the firmware , binary number means the bootloader number which is after G935FXX which is 8 at the moment..
About that combination of using different parts.. yes i read that here on xda..
You cannot downgrade bootloader to a lower number, but they described how they used newer firmware bootloader and modem with older ap and csc..
Maybe try using older g935fxxs6 ap and cp and g935fxxs8 bl and csc..
Or using g935fxxs6 ap and csc and g935fxxs8 bl and cp
Or try with g935fxxs6 ap, csc and cp and g935fxxs8 bl
Or lastly try with 935fxxs6 ap and g935fxxs8 cp, csc and bl..
I still suspect this trick is not gonna work for newer firmwares..
Edit : use samfw for firmware downloads
Edit2 : samfirm only downloads latest firmware
Sent from my hero2lte using XDA Labs

Related

Always add what kind of firmware you are using on your thread

Hello,
Alot of people are asking question about there galaxy S2 but they always forget to let us know what kind of firmware are using and if they rooted there phone.
To check your firmware dial *#1234# you see pda,phone and csc the phone is your firmware.
Yesterday i was looking about the battery bug but nobody was telling what kind of firmware there are using, so i dont even know if the battery bug is gone with the new firmware.
So People write down what firmware you are using.
This can help alot of users
My Firmware = XXKE7
definitely agree
firmware, and phone model, as we have international versions, and even so we also have Tegra vs Exynos
and very soon even the new Celox edition
Yes good idea .
jje
KG6 today and who knows tomorrow .
lastest firmware always the best. XWKG1 lastest official firmware for Turkiye and very good for me.
He/she could mention it in signature like mine, it will save the hassle of stating it every time.
Regards.
Sent from GT-I9100

"Warning: Your phone does not have active CSC code" - Reasons?

Hi all,
Last week I bought a Samsung Galaxy S7 Edge through ebay. Everything has been great until it came time to plug in my recently purchased Gear VR which is coming up with a network error. After some searching for solutions, it appears that my phone isn't set to a specific country (so I guess it doesn't know what software to install). I have installed "Phone INFO" which shows as per the attached screenshot.
My question is what could have caused this? If I was to reinstall firmware or attempt to add a CSC could it cause issues? Is it likely the previous owner was just a tinkerer? Am worried If I add a CSC my phone may become blocked or something but If I don't I can't use my Gear VR
Any help or advice greatfully received.
what software version is on your phone ?
It looks like someone may have have upgraded your phone to nougat beta or a custom ropm. Nougat beta does not have a csc associated with it. You need to flash one after installing.nougat beta.
I suggest you ddownload one for your provider from samfirmware or contact the sellor and try to find out what was done to the phone.
ozmo said:
Hi all,
Last week I bought a Samsung Galaxy S7 Edge through ebay. Everything has been great until it came time to plug in my recently purchased Gear VR which is coming up with a network error. After some searching for solutions, it appears that my phone isn't set to a specific country (so I guess it doesn't know what software to install). I have installed "Phone INFO" which shows as per the attached screenshot.
My question is what could have caused this? If I was to reinstall firmware or attempt to add a CSC could it cause issues? Is it likely the previous owner was just a tinkerer? Am worried If I add a CSC my phone may become blocked or something but If I don't I can't use my Gear VR
Any help or advice greatfully received.
Click to expand...
Click to collapse
The previous owner has probably installed a custom rom and that's why the csc is missing. If you don't have root, then I would recommend for you download the stock firmware and flash it with Odin and that should fix your problem.
Cosmic Blue said:
what software version is on your phone ?
It looks like someone may have have upgraded your phone to nougat beta or a custom ropm. Nougat beta does not have a csc associated with it. You need to flash one after installing.nougat beta.
I suggest you ddownload one for your provider from samfirmware or contact the sellor and try to find out what was done to the phone.
Click to expand...
Click to collapse
Please see attached for the software info, does this looks like the beta? Thanks for the replies both, I'll look into this Odin and see what it's all about. I haven't done anything with firmwares for years, not since messing about with Nitdroid on my old Nokia N9, hopefully can still get to grips with it all!
ozmo said:
Please see attached for the software info, does this looks like the beta? Thanks for the replies both, I'll look into this Odin and see what it's all about. I haven't done anything with firmwares for years, not since messing about with Nitdroid on my old Nokia N9, hopefully can still get to grips with it all!
Click to expand...
Click to collapse
Nope. not nougat
You can download full rom and flash through odin. Make sure you flash all 4 files (bl,ap,modem and CSC).
Here's what I thought happened.
Previous owner root phone(cause knox 0x1)
and probably update the firmware by flashing rom though odin or use custom rom. But he/she didn't know how to flash the full firmware though odin properly(or just don't want to. idk) because of the old modem(baseband APEQ) but new rom file(build APG3) and also missing CSC.
These probably mean he/she flashes only AP files(rom) in odin and ignore the other 2 files(modem and CSC) and might also bl file(bootloader).
Sent from my SM-G935F using Tapatalk
NonXtreme said:
Nope. not nougat
You can download full rom and flash through odin. Make sure you flash all 4 files (bl,ap,modem and CSC).
Here's what I thought happened.
Previous owner root phone(cause knox 0x1)
and probably update the firmware by flashing rom though odin or use custom rom. But he/she didn't know how to flash the full firmware though odin properly(or just don't want to. idk) because of the old modem(baseband APEQ) but new rom file(build APG3) and also missing CSC.
These probably mean he/she flashes only AP files(rom) in odin and ignore the other 2 files(modem and CSC) and might also bl file(bootloader).
Sent from my SM-G935F using Tapatalk
Click to expand...
Click to collapse
Yeah that sounds very plausible, just can't imagine why they would root it and update firmware but not do it properly, every guide I've read directs you to use the appropriate CSC for your country. Well I've got Odin running as we speak, so fingers crossed I can get this working and that I'll be testing out the VR as soon as possible! Does put me off buying second hand in future, but I guess on the plus side at least I don't have a warranty to worry about and can have some fun with different firmware.
some small 3 rd party providers or regional area have csc which are not commonly available, so when you upgrade you would not want to touch the csc.
The sim you are using may not recognize the csc the previous sim card was using that is why it is giving you there error message.
Could be that, guess we'll never know.
As mentioned above I have flashed with the latest firmware and updated the CSC, fortunately it's all working now so thanks for all the support. My refurbishment check now shows as attached.

ZTE Axon Mini 7 Firmware

Hi All
can i flash the following firmware on my ZTE Axon Mini - It was purchased from Gearbest
https://www.ztemobile.de/support/downloads/?product_id=2344
current version is 6.0
many thanks
if yours Mini is G version and you live in europe - then yes.
Tommixoft said:
if yours Mini is G version and you live in europe - then yes.
Click to expand...
Click to collapse
done with the gearbest B2017G, update to 7,1,1 , but I can't go in bootloader mode to root
Diomorgan said:
done with the gearbest B2017G, update to 7,1,1 , but I can't go in bootloader mode to root
Click to expand...
Click to collapse
Next time read before doing With 7.1 there is no longer bootloader mode. Downgrade to 6. Also you dont need to unlock it, there is no better ROMs for this rom. Official one is best. I tried them, so you can save time and use official one.
ALso root not working well with it. I had root but somehow i couldn't delete system apps.
Tommixoft said:
if yours Mini is G version and you live in europe - then yes.
Click to expand...
Click to collapse
Sorry if I'm hijacking this thread, if so, I can start another.
I recently purchased this phone (B2017G) from Gearbest as well.
It is still on 6.0.1 Marshmallow.
I have been searching for the right update file, starting with the US version, since that is where I live, but no go. The bootloader says
"E footer is wrong
"E:signature verification failed
"E: open file /cache/fota/error_code error erno = 2
'Installation aborted'
Am I right in thinking I need to find the update with the right signature? I have tried US, Austrian and Russian official ZTE updates with no success so far.. Am I on the right track?
US ZTE Support was as helpful as they could be, but were not familiar with the GearBest global variant. They sent me to the global support site, which won't let me use it, since I'm from the US, lol
Any suggestions? I'm going to try the German update from earlier in this thread after I get home tonight, by the way...
I also purchased mine from Gearbest (B2017G). I believe the phone is for the European market as it comes with a EU plug in the sealed box, but not sure for which country. I tried the firmware for the Spanish model http://www.ztedevice.com/support/detail?id=D4454D33442F45E192A95718509F4586. The update failed.
I just flashed the Nougat 7.1.1 an hour ago from here:
https://forum.xda-developers.com/showpost.php?p=73257562&postcount=13.
It already looks promising - the phone is very cool after update. Previously the phone is always warm, even in standby. I hope the battery life is a big improvement.
If you intend to flash this zip file, make sure your phone is a European model B2017G. As posted before I got this phone from Gearbest as many others.
Hi,
Updated to 7.1.1 by OTA 3 weeks ago when i bought the phone from Amazon.
It seems that we'll get Oréo later...amazing ! thks ZTE !
It is not official that Axon 7 Mini (B2017G) will get Android 8 aka Oreo. ZTE should do the update to Oreo as this is one popular phone still.
reticuli said:
It is not official that Axon 7 Mini (B2017G) will get Android 8 aka Oreo. ZTE should do the update to Oreo as this is one popular phone still.
Click to expand...
Click to collapse
In a chat with ZTE USA assistance last week, the tech mentioned that Oreo will be rolling out for the Axon 7 Mini in the US.
afigienas said:
Next time read before doing With 7.1 there is no longer bootloader mode. Downgrade to 6. Also you dont need to unlock it, there is no better ROMs for this rom. Official one is best. I tried them, so you can save time and use official one.
ALso root not working well with it. I had root but somehow i couldn't delete system apps.
Click to expand...
Click to collapse
Once you downgraded and rooted can you upgrade back and keep the root?
Root is needed for this phone because it doesn't allow to move ANY app to SD.I sort of recovered the backup of my apps and data with Helium without root, but I need more internal space: with root you can even enable adoptable storage.
If only we can get access bootloader and flash modified boot.bin with magisk...
At the moment I can only use it as backup phone, my everyday phone LG G5 has 7gigs of whatsapp stuff that can only be internal, but most part of the 130+ apps I got are shared in the SD card.
I don't even need TWRP actually, just root to move apps to SD (or a firmware that allows it, since it's a firmware option...ZTE decision)
Flashing nougat 7.1.1 is the best thing I've done - it basically fixed the battery drain. I had to charge 3 times a day before the update. Last night the battery was only down 3%. This morning I recharged it to 93% before I left for work. At 5pm after a days normal use, it still had 55% left. It's just amazing. I think the update flashed out all the nastiest including the suspicious apps that come with the phone. I have no idea what they are - 99003, 99033, 99035 and more. I suspect they are malware although I cant be sure. They consume battery and keep the phone awake. The phone was warm even in standby.
priority1 said:
Flashing nougat 7.1.1 is the best thing I've done - it basically fixed the battery drain. I had to charge 3 times a day before the update. Last night the battery was only down 3%. This morning I recharged it to 93% before I left for work. At 5pm after a days normal use, it still had 55% left. It's just amazing. I think the update flashed out all the nastiest including the suspicious apps that come with the phone. I have no idea what they are - 99003, 99033, 99035 and more. I suspect they are malware although I cant be sure. They consume battery and keep the phone awake. The phone was warm even in standby.
Click to expand...
Click to collapse
you mean the stock one or a custom 7.1.1 ?
Diomorgan said:
you mean the stock one or a custom 7.1.1 ?
Click to expand...
Click to collapse
Stock one
Got the 7.1.1 update...
... in a round-about way. Went here http://www.ztedevice.com/support/detail?id=6CCC18CC9451416C8A01BED5174B5762#software and it downgraded my phone to a December 2016 security update.
Flashed the Russian 6.0.1, (had to use the bootloader method for both), then was able to run the Spanish update from ZTE, directly from the System updates menu after extracting the 'update.zip' file from the package and placing it in the root of the SD.
Now running 7.1.1 and happy. I can still access AT&T's US network perfectly, so I didn't destroy the usefulness of my new phone as a phone.
I may eventually put a second T-Mobile sim in it if I think I can live without the SD card's storage...
Edit: I am running a GearBest-purchased phone with 'global' firmware, meaning no official updates available. It is possible that I could have tried to use the Spanish 7.1.1 directly, but I didn't try that before taking the route I did. Just happy *something* worked!
Still no root? Even a firmware where I can patch boot.img with magisk and repack and flash?
I did it with Ulefone S8Pro, but because someone here posted the firmware and it was editable and flashable without getting errors! No TWRP, but who cares, I have adoptable storage and Is essential with those "low" internal memory phones....
A ZTE moderator on the official US site has disconfirmed my report of Oreo on Axon 7 Mini:
"sshasan Z-Community Moderator New YorkPosts: 3,409Z › admin
April 2, 2018 5:40PM
No announcements have been made at this time. If a representative has stated this, they have misspoken."
Click to expand...
Click to collapse
Please disregard my earlier reporting. Although my report was accurate as far as what I had heard, the rep I chatted with was likely mistaken.

how to downgrade from official 8.0 to 7.0

i am on oreo official uk one but now i want to go back to my indian 7.0 firmware because of volte problem in btu so plzz help me and tell me the best way..without harming my device 935fd.
or can i flash 935fd india G935FXXS2DRCG noguat on
on uk G935FXXU2ERE8 ?
give me in private your serial number ,I will tell you wich rom its stock for your device...and I give you an advice,download the firmware using www.updato.com its more faster and you will find all firmwares for your device
Astra441 said:
i am on oreo official uk one but now i want to go back to my indian 7.0 firmware because of volte problem in btu so plzz help me and tell me the best way..without harming my device 935fd.
or can i flash 935fd india G935FXXS2DRCG noguat on
on uk G935FXXU2ERE8 ?
Click to expand...
Click to collapse
Download samfirm from here :
https://forum.xda-developers.com/attachment.php?attachmentid=3803841
Enter your model no. example SM-G935F
And region code: INS
And click check for updates, it will check for latest version available for your region. Then proceed to download.
If samfirm gives some error codes, then I guess you have to use updato or sammobile. Here is the link for updato https://updato.com/firmware-archive-select-model?record=C97F8A453DF911E89F15FA163EE8F90B
Sent from my S7 Edge using XDA Labs
shah22 said:
Download samfirm from here :
https://forum.xda-developers.com/attachment.php?attachmentid=3803841
Enter your model no. example SM-G935F
And region code: INS
And click check for updates, it will check for latest version available for your region. Then proceed to download.
If samfirm gives some error codes, then I guess you have to use updato or sammobile. Here is the link for updato https://updato.com/firmware-archive-select-model?record=C97F8A453DF911E89F15FA163EE8F90B
Sent from my S7 Edge using XDA Labs
Click to expand...
Click to collapse
mate i want to know like i am on oreo stock firmware from uk but now i want to go ins firmware but in ins 7.0 is latest so if i downgrade from oreo to noguat is my phone get brick or in bootloop or odin give error bootloader one thats all because i can downgrade only u2 to u2 or u1 to u2 but not u2 to u1 but in ins firmware there is s2 not u2 thats why...
And i Flashed the 935f firmware on my 935fd model
Astra441 said:
mate i want to know like i am on oreo stock firmware from uk but now i want to go ins firmware but in ins 7.0 is latest so if i downgrade from oreo to noguat is my phone get brick or in bootloop or odin give error bootloader one thats all because i can downgrade only u2 to u2 or u1 to u2 but not u2 to u1 but in ins firmware there is s2 not u2 thats why...
Click to expand...
Click to collapse
You know I would have never advised anyone if I haven't tested myself. You can flash without any issues, but nougat will seem much laggy, don't know why. I just experienced it after downgrading that last nougat release for my region was much laggy then it was before I upgraded to oreo. But it may just be my imagination because oreo is more responsive and faster than nougat.
Nope S2 won't hurt. The thing is that the number after alphabet is same i.e 2. S2 is update from U2. 2 must be same. Also firmware is same for both F and FD models.
Sent from my S7 Edge using XDA Labs
shah22 said:
You know I would have never advised anyone if I haven't tested myself. You can flash without any issues, but nougat will seem much laggy, don't know why. I just experienced it after downgrading that last nougat release for my region was much laggy then it was before I upgraded to oreo. But it may just be my imagination because oreo is more responsive and faster than nougat.
Nope S2 won't hurt. The thing is that the number after alphabet is same i.e 2. S2 is update from U2. 2 must be same. Also firmware is same for both F and FD models.
Sent from my S7 Edge using XDA Labs
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thanks i try but did i need to on oem unlock or not.
Astra441 said:
thanks i try but did i need to on oem unlock or not.
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Click to collapse
Yes always enable oem unlock, just in case you may need to flash custom recovery or root, just to be safe its good thing to always keep oem unlock enabled.
Sent from my S7 Edge using XDA Labs
shah22 said:
Yes always enable oem unlock, just in case you may need to flash custom recovery or root, just to be safe its good thing to always keep oem unlock enabled.
Sent from my S7 Edge using XDA Labs
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everything oke but i can't make call even volte showing i can't make call even not reciving the msg also only net working...
Astra441 said:
everything oke but i can't make call even volte showing i can't make call even not reciving the msg also only net working...
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Click to collapse
Ain't happened with me, try changing your sim card. It isn't your phone's fault. If its registering network properly, then there is no issue with phone.
Sent from my S7 Edge using XDA Labs
my problem solved thanksss
please help me i have failed to downgrade back to 7.0 from 8.0 . phone model G935F
i want to downgrade because i lost network in upgrade and IMEI in service mode says status: NG
FRUMENCE said:
please help me i have failed to downgrade back to 7.0 from 8.0 . phone model G935F
i want to downgrade because i lost network in upgrade and IMEI in service mode says status: NG
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Click to collapse
mate make sure ome unlock is enable then use latest 7.0 of ur region make sure its u2 not u1 then use latest odin 13.1 to flash...
Astra441 said:
mate make sure ome unlock is enable then use latest 7.0 of ur region make sure its u2 not u1 then use latest odin 13.1 to flash...
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Click to collapse
will a firmware with this PDA work ? PDA; G935FXXU2DRB6
---------- Post added at 10:06 PM ---------- Previous post was at 09:50 PM ----------
FRUMENCE said:
will a firmware with this PDA work ? PDA; G935FXXU2DRB6
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update; the U2 firmware worked now the next thing is how do i repair my IMEI and get network back?
any help ?
FRUMENCE said:
will a firmware with this PDA work ? PDA; G935FXXU2DRB6
---------- Post added at 10:06 PM ---------- Previous post was at 09:50 PM ----------
update; the U2 firmware worked now the next thing is how do i repair my IMEI and get network back?
any help ?
Click to expand...
Click to collapse
Try this https://forum.xda-developers.com/s7-edge/how-to/guide-how-to-fix-check-drk-imei-issues-t3379516/
Sent from my S7 Edge using XDA Labs
shah22 said:
Try this https://forum.xda-developers.com/s7-edge/how-to/guide-how-to-fix-check-drk-imei-issues-t3379516/
Sent from my S7 Edge using XDA Labs
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!!!!WARNING!!!!!! TOO LONG!!
Thank you for your help but this post did not work for me. After downgrading and trying many times to get imei i flashed the FACTORY BINARY but nothing i had lost modem and did not have baseband and NVDATA.
so with my heart rate @ a billion beats/sec with thoughts of i had bricked my phone. i clam down and started trouble shooting one by one .
At this point modem was undetected odin would fail to flash any firmware.
so i downloaded latest firmware 8.0. lucky it flashed and removed the FACTORY BINARY now back to stock 8.0 with no baseband and modem firmware. I did the following;
1. Flashed latest TWRP via Odin.
2.Formatted DATA then reboot back to TWRP (more drama ) your likely to face DM verify issue like i did here flash CF auto for android 7.0 but it wont give you root for some reason.
3.back to TWRP flash SuperSu for s7edge(SR1-supersu)
4.download the NVDATA,modem,and EFS for your device google search should yield.
5.flash NVDATA,modem and EFS. then factory reset the phone in TWRP
7.wait for many dramatic reboots,(reroot if you lost root)
8. then download and install ROOT BROWSER
still no network in my case at this point. i waited 20mins.
9.browse to the EFS folder in root. delete everything except **FACTORY APP**and **PROV-DATA**
10.do a full reboot
11.if no network like me, go to TWRP and factory reset.
12.sit back sip coffee and wait..
THIS IS WHAT WORKED FOR ME (G935F) i have since flashed back stock rom and rerooted and i have not lost IMEI again am now running a custom rom since 3hours ago still IMEI and network is strong. BE CAREFUL NOT TO BRICK YOUR PHONE I AM NOT RESPONSIBLE. DO AMPLE RESEARCH BEFORE ATTEMPTING THIS METHOD MAKE SURE ALL FILES ARE FOR YOUR DEVICE. ALWAYS KEEP LATEST STOCK ROM WITH YOU.
Could you tell me which rom should I flash on s7 edge locked to three UK? I bricked my phone. Don't have backup.
---------- Post added at 12:39 PM ---------- Previous post was at 12:29 PM ----------
Don't have a backup. G935F on three UK. G935FXXS2DRA9 is what sammobile shows. But due to a scam on their website I can't create an account for 'free' download. Could you send a link with another download? Thanks
Vitfit83 said:
Could you tell me which rom should I flash on s7 edge locked to three UK? I bricked my phone. Don't have backup.
---------- Post added at 12:39 PM ---------- Previous post was at 12:29 PM ----------
Don't have a backup. G935F on three UK. G935FXXS2DRA9 is what sammobile shows. But due to a scam on their website I can't create an account for 'free' download. Could you send a link with another download? Thanks
Click to expand...
Click to collapse
Use SamFirm to download firmware. Works great for me. I get full download speed.
https://forum.xda-developers.com/galaxy-tab-s/general/tool-samfirm-samsung-firmware-t2988647
You can use any CSC code firmware, I don't know what your one came with. Could be any one of these:
http://prntscr.com/juh609
http://prntscr.com/juh7lq
benjamen50 said:
Use SamFirm to download firmware. Works great for me. I get full download speed.
https://forum.xda-developers.com/galaxy-tab-s/general/tool-samfirm-samsung-firmware-t2988647
You can use any CSC code firmware, I don't know what your one came with. Could be any one of these:
http://prntscr.com/juh609
http://prntscr.com/juh7lq
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Click to collapse
I have a firmware but can't flash BL file in odin. All the rest of the files like csc, cp, ap, home work. Only bl doesn't. Message on the phone is sv. rev check fail.
Vitfit83 said:
I have a firmware but can't flash BL file in odin. All the rest of the files like csc, cp, ap, home work. Only bl doesn't. Message on the phone is sv. rev check fail.
Click to expand...
Click to collapse
Thats because you were flashing older bootloader version on a newer bootloader..
Download this https://updato.com/firmware-archive-select-model?record=6CF8552A10BC11E89F15FA163EE8F90B
Flash it using odin 3.13.1 , also be sure to use CSC file and NOT the home_CSC..
shah22 said:
Thats because you were flashing older bootloader version on a newer bootloader..
Download this updato.com/firmware-archive-select-model?record=6CF8552A10BC11E89F15FA163EE8F90B[/url]
Flash it using odin 3.13.1 , also be sure to use CSC file and NOT the home_CSC..
Click to expand...
Click to collapse
I was able to bring my s935f to life but unfortunately imei and signal is gone... Now, the fact is that I had same situation with my note5 in the past and...…. have given up due to lack of ideas how to fix such complicated thing like bringing back imei. Have tried all apps from play store-/rubbish. Even today I still have that motherboard in my drawer.
BUT s7 edge looks so great that I would take a chance to fix it if anyone my kind members could provide me with instruction explaining how to do this on basic knowledge level.
I know how to flash rom using Odin., how to install usb drivers, unlock oem, usb debugging,, how to flash twrp, root the phone...… but I struggle with the knowledge about 'pit file' (what the heck is that? because my odin 3.13.1 doesn't have pit file slot which I have seem on youtube movie....) ,I am confused with the fact that I can flash let say csc ,file in AP slot in din? Ums, …. Anotherwords wouldn't be a HUGE PROBLEM if the steps given on youtube or google work!!! But they don't!!! I mean my note5 here. So I am fully aware that simple looking instruction may bring a lot of hidden problems such as 'your rom flashed ok on youtube but my exactly the same phone and rom faild…. and now the Game starts when you read on google multiple solution and non of them work for you because you missed some small detail that wasnt mentioned in the movie because that was so obvious to creator. Looking back on my previous playing with roms I can say that IS ALWAYS SOMETHING ………. so I expect a lot of stress.
If YOU know or did it before how to make my phone great again, tell me please. Otherwise this pretty beast will end up mining electroneum.... Thanks

[Help] Samsung S8+ (SM-G995F) - Downgrade Firmeware from 8.0 to 7.0

Hello Guys,
Well, I wanna downgrade my OS on my S8 Plus. Why? Battery life sucks. I have the latest update and it still drains my battery like hell... I get SOT of 3/4h at best... sometimes 5h but depends alote!
Im a heavy user and ye, Im coming from a Mate 10 Pro and I do regred it because of the battery life (only that was stronger on the Huawei). Since I don´t own money to go to the P20 Pro, I have to stay on the S8 Plus.
I already have the correct Firmeware and I know how to use ODIN.
But, when I try to flash it, it gives me error (not a specific one) just a error saying fail... and doens´t do anything.
When I bought the phone, it came with a dumb version of a country and he even hadn´t any update since July 2017. So I changed the ROM to my country ofc with no problems at all using ODIN. Now getting to downgrade part... I just can´t, always saying fail.
What Im doing wrong or is something missing?!
I did compare the firmeware and it is for my model/version!
From what I read, the new OS doesn´t let me downgrade as security messure, so guys HOW do I downgrade STEP by STEP?
I spended alote time on Youtube/Google and 0 luck or sucess... !
I do miss my SOT of 6/7h on the 7.0 of the S8 Plus!

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