Galaxy S4 i9505 "Downgrade" with CFW - Galaxy S 4 Q&A, Help & Troubleshooting

Hello,
is it possible to Downgrade below KitKat with a Touchwiz based CFW?

Steve2016 said:
Hello,
is it possible to Downgrade below KitKat with a Touchwiz based CFW?
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You can, but you won't be able to make calls if you do. The KitKat upgrade changed things at the hardware level and the phone will report an invalid IMEI with older firmware.

Strephon Alkhalikoi said:
You can, but you won't be able to make calls if you do. The KitKat upgrade changed things at the hardware level and the phone will report an invalid IMEI with older firmware.
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Ok I dont used for calls, do you know which roms are still Online for Download?

I switched to LineageOS years ago because I prefer my firmware to be as up to date as possible. So I can't help you there.

Related

[Q] Very simple questions for the ones who are experienced

-Is it possible to downgrade from 4.4.2 to 4.2.2?(by using odin)
-Does EFS change at every firmware update?
-If i downgrade to 4.2.2, does the imei number transform to 0049... ?
-Is the battery performance better at 4.2.2 firmware?
Thank You !
(PS: I9500XXUFNC1 version)
I found xxufnc1 modem file. If i flash 4.2.2 rom and the modem file, there will be no problem, right?
candask said:
-Is it possible to downgrade from 4.4.2 to 4.2.2?(by using odin)
-Does EFS change at every firmware update?
-If i downgrade to 4.2.2, does the imei number transform to 0049... ?
-Is the battery performance better at 4.2.2 firmware?
Thank You !
(PS: I9500XXUFNC1 version)
Click to expand...
Click to collapse
Sorry mate but downgrading from 4.4.2 is not possible!
candask said:
-Is it possible to downgrade from 4.4.2 to 4.2.2?(by using odin)
-Does EFS change at every firmware update?
-If i downgrade to 4.2.2, does the imei number transform to 0049... ?
-Is the battery performance better at 4.2.2 firmware?
Thank You !
(PS: I9500XXUFNC1 version)
Click to expand...
Click to collapse
1) No, it's not possible to downgrade from 4.4.2 to 4.2.2. Once you've upgraded your bootloader, theres no going back.
2) No, I don't think EFS ever changes. It is possible to loose/corrupt the EFS information, so it's a good idea to have it backed up
3) Not sure on this, but it's not possible to downgrade to 4.2.2 anyway
4) I've found 4.4.2 to be better than 4.2.2, but it all depends on how your phone is set up and how much you use it anyway i'd imagine. Plus different kernels will give different results.
-Is it possible to downgrade from 4.4.2 to 4.2.2?(by using odin)
well there's this: http://forum.xda-developers.com/showthread.php?t=2686882
-Does EFS change at every firmware update?
would think so
-If i downgrade to 4.2.2, does the imei number transform to 0049... ?
IMEI should never change as is hard coded to motherboard, though, once i flashed wrong CSC ROM and it changed IMEI to 0000... and could not detect any network on my country.
-Is the battery performance better at 4.2.2 firmware?
I really believe new updates give better performance, I experienced a great improvement on kitkat
I did it! The firmware version is 4.2.2 now and there is no imei or network problem :laugh: check out my second post :good:
candask said:
I did it! The firmware version is 4.2.2 now and there is no imei or network problem :laugh: check out my second post :good:
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Click to collapse
hows Your battery life in 4.2.2???
saadmshk said:
hows Your battery life in 4.2.2???
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after you downgrade to 4.2.2, a strange problem occurs: you can't charge your battery. so i had again upgraded to 4.4.2...
Never tried to downgrade u mite brick ur device
Sent from my GT-I9505 using XDA Premium 4 mobile app
i have samsung galaxy s4 i9500 with latest firmware for my region n I'm getting worse battery timings ever i had on this device.... see the images.... these are wid mobile data on all the time n wifi turned off haptic touch off auto brightness also off n screen brightness to minimum level....

[Q] S5 Bought In China Help...

Hello
So firstly look at the image i attached....
Now i want to know if it is possible to root this phone and install CM12 or another custom rom or even an official lollipop rom that i will receive updates on ?
Thanks in advance
It looks to me like you have a Verizon S5, although the model number states otherwise and the DONGCHAO.617 build number seems custom. You do have a Verizon S5 though, so you can root on NCG, which you are running, through towelroot. However, ROMs like CM12 can't be installed without an unlocked bootloader, which is impossible currently on the VZ S5. You can get a Lollipop ROM with root by following these instructions.
mrjiggywiggy said:
It looks to me like you have a Verizon S5, although the model number states otherwise and the DONGCHAO.617 build number seems custom. You do have a Verizon S5 though, so you can root on NCG, which you are running, through towelroot. However, ROMs like CM12 can't be installed without an unlocked bootloader, which is impossible currently on the VZ S5. You can get a Lollipop ROM with root by following these instructions.
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Thanks for the reply, just one question is this lollipop rom and official firmware that can be updated?
..also if i keep this software running and don root etc will it get lollipop eventually?
PCFervent said:
Thanks for the reply, just one question is this lollipop rom and official firmware that can be updated?
..also if i keep this software running and don root etc will it get lollipop eventually?
Click to expand...
Click to collapse
What you're currently running is not official. The build number isn't official, anyway, so it won't get the lollipop update. The firmware that I'm telling you about can be updated, but I'm not 100% sure about the ROM.
Ok Thank you I will give it a try either today or tomorrow cheers for the info
very similar issue
Good day,
I have a similar issue with phone bought in china (dong chao)
However my extra problem is low wifi signal (smart switch off).
just updated to 6.01 verizon and the issue persisits. It is very strange as the phone seemed to be verizon but labeled as 900F...
very strange...
Any recommendations ? thank you

[Q] lollipop official stock problems

Hi im a bit of a noob when it comes too this flashing business but i managed to update my i9505 to lollipop using odin and the official stock rom but the problem i have now is my network signal is now terrible where it was good before is ther anyway that a noob like me can fix this issue? Im in uk on giffgaff (o2)
i have never rooted my s4 before and if some one has a noob guide for rooting from lollipop so i can custom rom it up i might give that a look too, I wouldnt mind a nice slim custom rom with a few extra tweeks and without all the google and samsung rubbish that comes standard..
Thanks
P.s sorry for all the questions and sorry if this is in the wrong section
The signal problem is probably caused by the modem.
You have to flash the latest modem for your phone, country and carrier.
If you already are on the latest modem then a lollipop modem might help.
Here you can find a guide on how to root lollipop.
If you want a slim rom you better try CM12 or GPE. If you like touchwiz then look for a touchwiz based lollipop rom around the forum.
clizzle said:
Hi im a bit of a noob when it comes too this flashing business but i managed to update my i9505 to lollipop using odin and the official stock rom but the problem i have now is my network signal is now terrible where it was good before is ther anyway that a noob like me can fix this issue? Im in uk on giffgaff (o2)
i have never rooted my s4 before and if some one has a noob guide for rooting from lollipop so i can custom rom it up i might give that a look too, I wouldnt mind a nice slim custom rom with a few extra tweeks and without all the google and samsung rubbish that comes standard..
Thanks
P.s sorry for all the questions and sorry if this is in the wrong section
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Is your phone branded or unlocked? Coz this is very important. UK(O2) still without lollipop update. This is the possible reason that you are receiving weak network signal.
Joku1981 said:
Is your phone branded or unlocked? Coz this is very important. UK(O2) still without lollipop update. This is the possible reason that you are receiving weak network signal.
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Click to collapse
sorry for late reply... its unbranded unlocked version
i will try and look for the latest modem and give that a try tonight.... Think i might root and put a custom rom on in the end anyway as there is some minor bugs on the lollipop rom that its annoying me
Thanks for the help guys i will let you know how i get on
so im gonna flash this XXUHOB8 + Fix WIFI hopefully it might help as i was on XXUHOB7 before?
clizzle said:
so im gonna flash this XXUHOB8 + Fix WIFI hopefully it might help as i was on XXUHOB7 before?
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Install this APP (cover serial number and IMEI) and add some screenshots for avoid problems.
sorry it wont let me upload as i dont have more than 10 posts what do you need to know and il tell you what it says
I'm also experiencing someone what of the same problem I've rooted/Un rooted a couple times, I'm back at a stock version and it seems to be ok.

[Q]Kies on A300H

What happens if I try to reinstall the phone firmware through Kies On Tools tab using the number S / N ?, it will return to KitKat from lollipop without any problems?
Is it rooted? Custom Rom?
diegodelp said:
What happens if I try to reinstall the phone firmware through Kies On Tools tab using the number S / N ?, it will return to KitKat from lollipop without any problems?
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Click to collapse
If you mean the restore firmware function in which you enter your serial no then kies/smart switch will restore the latest firmware for the model and carrier the phone is registered with.
There is a varying amount of A3/5/7 owners that have had issues when downgrading back to KitKat from Lollipop so research and then make your choice.
ASHLEY117 said:
If you mean the restore firmware function in which you enter your serial no then kies/smart switch will restore the latest firmware for the model and carrier the phone is registered with.
There is a varying amount of A3/5/7 owners that have had issues when downgrading back to KitKat from Lollipop so research and then make your choice.
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Yes I'm reffering that, but the cellphone I have is a A300H simple sim and I installed lollipop for A300H dual sim version xD. Are there a simple sim version of lollipop for my device? Thanks hehehe
diegodelp said:
Yes I'm reffering that, but the cellphone I have is a A300H simple sim and I installed lollipop for A300H dual sim version xD. Are there a simple sim version of lollipop for my device? Thanks hehehe
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No worries. yeah, if you use the restore function where you enter the serial no then kies will install the original firmware or the correct lollipop firmware for your device.
i think the firmware should work ok on either single sim or dual sim models. do you have full use of the device?
ASHLEY117 said:
No worries. yeah, if you use the restore function where you enter the serial no then kies will install the original firmware or the correct lollipop firmware for your device.
i think the firmware should work ok on either single sim or dual sim models. do you have full use of the device?
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Yes the phone is fully working hahaha but I dont like lollipop . If the rom aviable on kies for my device is a kitkat could I get a brick?
diegodelp said:
Yes the phone is fully working hahaha but I dont like lollipop . If the rom aviable on kies for my device is a kitkat could I get a brick?
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Click to collapse
I have an A300FU model and i have downgraded to kitkat without issues but like i mentioned in a previous post that some A3 owners have had issues with bricking their device. It is entirely your choice but wipe data first if you do decide to go ahead. I went back to Lollipop in the end to be honest.
ASHLEY117 said:
I have an A300FU model and i have downgraded to kitkat without issues but like i mentioned in a previous post that some A3 owners have had issues with bricking their device. It is entirely your choice but wipe data first if you do decide to go ahead. I went back to Lollipop in the end to be honest.
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Click to collapse
Well and if i get a brick... how can i solve it?
diegodelp said:
Well and if i get a brick... how can i solve it?
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Click to collapse
That is what i'm trying to say as all devices are different so could result in a brick or not. I was lucky and did not brick my device but i could if i reverted back to KitKat again. There is always a risk when flashing so the choice is only yours to make.
Hello fellow A3 users, I have made a thread on making your TouchWiz less TouchWiz-y. An AOSP Theme thread for A3
Come check it out
http://forum.xda-developers.com/android/development/a3-aosp-styled-rro-layer-theme-ported-t3204537

Straight Talk S5 question

So I'm playing around with my straight talk s5 model # SM-S902 and running android version 4.4.2. We all know that straight talk does not issue the updates for phones (obvioisly) so what I really want is a stock rom and stock os on this phone that is up to date and current. My phone IS rooted and I know that this phone is a KLTE model but I'm u sure how to get the most recent android version as updates for this phone I also know that other versions phone roms work for this phone how ever I'm not sure exactly what other model number phones I can flash this one with. Any guidance or help would be greatly appreciated
Your phone is a kltevzw. G900v roms work. There is no stock mm you can use. Yet.
ddjr said:
Your phone is a kltevzw. G900v roms work. There is no stock mm you can use. Yet.
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So is there any way for example to put android 6.p marshmallow on this with a G900v dump or update?
I found this just no idea if it's compatible with my phone or how to go about installing it if it is
http://www.verizonwireless.com/support/galaxy-s5-update/
You can install resurrection remix, aicp, cyanogenmod13 or mokee (all for kltevzw). But your firmware and modem will stay the same.
ddjr said:
But your firmware and modem will stay the same.
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This is another thing I'm not so sure I understand, I see a lot of talk about a "modem" I know what a traditional for example dial up or cable modem is but I'm not sure if it's the same concept in the phone world or not.

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