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[Q] i9505 "no signal" after 4.42 Google ROM upgrade

Hi,
I own a GS4 - i9505G - with google ROM edition v 4.3.
yesterday I tried to upgrade the ROM to 4.42 (Google ROM clean version without any tweaks, found here: http://forum.xda-developers.com/showthread.php?t=2341026).
After the upgrade, the UI & ROM seem to work fine but I have no carrier signal.
When I perform the mobile networks operators' search I can see all networks and by clicking "Choose automatically" I managed to renew the signal. However, after a very short while the signal is lost again (manual joining to the network does not work at all).
I searched and found this thread: http://forum.xda-developers.com/showthread.php?t=2192025
and this lead me to use ODIN and flash the modem (twice, as recomended).
I used the modem file exactly for my phone base version which is: XXUBMH1.
However, even after flashing twice - still no signal....
Since I had Nandroid backup (always VERY highly recommended) I returned to the original 4.3 ROM version and then everything worked fine.
I also made another try to identify the issue and installed the 4.42 Google ROM edition which is not the Google clean original version and performed a factory wipe and cleaning everything
(this time the ROM I used was downloaded from here: http://forum.xda-developers.com/showthread.php?t=2557353).
However, same story and no signal....
I would very much appreciate any idea how to solve this issue.
By the way - from December I began to receive a notification on the device that an upgrade ROM was downloaded requesting me to click to install. However, when I tried to operate it the process always failed in the first steps (don't remember the error code). If anyone can direct me where to delete the file that was downloaded - it will also be very helpful due to the low free memory on the device.
Thanks in advance for all the help!

I now that for some roms you need to use TWRP recovery, or you will get "no signal".
Try flashing the rom with TWRP recovery and see if that solves your problems.

thanks but no cure yet
Lennyz1988 said:
I now that for some roms you need to use TWRP recovery, or you will get "no signal".
Try flashing the rom with TWRP recovery and see if that solves your problems.
Click to expand...
Click to collapse
Thanks for the advice!
However, it seems that the cure is elsewhere. I had the PhilZ 6, and now converted to TWRP, but issue stays the same.
It appears that the signal is not totally lost, but the network connection can only be maintained for a short while, and only after a reset and when choosing automatic network registration. Soon after the signal disappears.
All other wireless aspects (WIFI, BT) seem to be working fine like before.
I am still breaking my teeth for a solution here...
Thanks.

Why are you installing a rom for the i9505 on a i9505G?
That would probably explain your issues.

You say that your phone is I9505G, but both of those roms are for I9505. Don't ever do such thing. You're lucky you didn't brick your phone. Check your IMEI

thanks for the note
bigkusi said:
You say that your phone is I9505G, but both of those roms are for I9505. Don't ever do such thing. You're lucky you didn't brick your phone. Check your IMEI
Click to expand...
Click to collapse
Indeed I didn't notice the difference and thank you for this very important note.
I would like to elaborate - my phone was bought as a standard i9505, but I installed a clean Google Edition ROM on it and then checked under "Settings"/"About phone" menu to see the Model number "GT-I9505G".
I am now not so sure that this is the true model of I9505G, even though this is the information shown on the phone. If the model relates only to original Google Rom Edition phones then I am wrong and probably confused you.
My IMEI is: 3576********. Can you help me with the true definition and the files that I need to install?

thank you for the important note
Lennyz1988 said:
Why are you installing a rom for the i9505 on a i9505G?
That would probably explain your issues.
Click to expand...
Click to collapse
Indeed I didn't notice the difference and thank you for this very important note.
I would like to elaborate - my phone was bought as a standard i9505, but I installed a clean Google Edition ROM on it and then checked under "Settings"/"About phone" menu to see the Model number "GT-I9505G".
I am now not so sure that this is the true model of I9505G, even though this is the information shown on the phone. If the model relates only to original Google Rom Edition phones then I am wrong and probably confused you.
My IMEI is: 3576**********. Can you help me with the true definition and the files that I need to install?

sarigd said:
Indeed I didn't notice the difference and thank you for this very important note.
I would like to elaborate - my phone was bought as a standard i9505, but I installed a clean Google Edition ROM on it and then checked under "Settings"/"About phone" menu to see the Model number "GT-I9505G".
I am now not so sure that this is the true model of I9505G, even though this is the information shown on the phone. If the model relates only to original Google Rom Edition phones then I am wrong and probably confused you.
My IMEI is:xxx. Can you help me with the true definition and the files that I need to install?
Click to expand...
Click to collapse
First of all know this: You should never reveal your IMEI, it's not safe. Edit your post and hide your Imei number.
Now check again if the Imei that you see inside settings> is the same as the one from the back of the phone, under the battery. If its the same then you are fine. As for the device model, you can also find the model under the battery, and if it says that it's a i9505G than that should clear all the confusion.
My advice would be go back to stock official using ODIN. Grab the latest firmware from sammobile. It's always the safest thing to do, and it should handle all the mess

its a I9505
bigkusi said:
First of all know this: You should never reveal your IMEI, it's not safe. Edit your post and hide your Imei number.
Now check again if the Imei that you see inside settings> is the same as the one from the back of the phone, under the battery. If its the same then you are fine. As for the device model, you can also find the model under the battery, and if it says that it's a i9505G than that should clear all the confusion.
My advice would be go back to stock official using ODIN. Grab the latest firmware from sammobile. It's always the safest thing to do, and it should handle all the mess
Click to expand...
Click to collapse
Many thanks for your message - even though I feel stupid both for not thinking to check "under the hood" and also for publishing the IMEI (now fixed).
It appears that my phone model is I9505. This validates my initial question, how to update the Google Edition ROM (clean version) from 4.3 to 4.42, but avoid the loss of network signal... I will try to take it to a local store and solve my unknown issues with the upgrade by paying a few bucks.
Many thanks anyway!

sarigd said:
Many thanks for your message - even though I feel stupid both for not thinking to check "under the hood" and also for publishing the IMEI (now fixed).
It appears that my phone model is I9505. This validates my initial question, how to update the Google Edition ROM (clean version) from 4.3 to 4.42, but avoid the loss of network signal... I will try to take it to a local store and solve my unknown issues with the upgrade by paying a few bucks.
Many thanks anyway!
Click to expand...
Click to collapse
My last guess is that you are using an incorrect modem. Are you still on the old bootloader?
If you are already on the new bootloader, just flash the latest modem available. If it is correct that you have XXUBMH1, then you are using a modem that is to old for 4.4.2.

this is very true
Lennyz1988 said:
My last guess is that you are using an incorrect modem. Are you still on the old bootloader?
If you are already on the new bootloader, just flash the latest modem available. If it is correct that you have XXUBMH1, then you are using a modem that is to old for 4.4.2.
Click to expand...
Click to collapse
I think that this is the correct problem identification and that my modem file is not updated for 4.42.
I tried to flash the updated modem file for XXUBMH1 version (in this link: http://forum.xda-developers.com/showthread.php?t=2192025), but this did not solve the problem (even after flashing it twice).
Could I flash a different modem file than the one set for the phone base version which I have (or do I risk bricking my device)? and does the base version change after installing the new ROM (I forgot to check this after the new ROM was installed)? If yes then I will re-install it and flash the new modem file which should solve the problem.
Thanks for helping out.

Which modem did you flash? And are you on the old or new bootloader?

[Q] Updating i9505 with firmware XXUDMH8

I tried to update the phone OTA but it says that its already updated to its latest version and i tried it on kies and it says that my device is not supported to update via kies. Im running my phone with android 4.2.2 jelly bean. I want to upgrade to kitkat because my phone drains battery faster based on my observations with my cousins phone, we also tried to change batteries just to make sure.
Is there a way to update this phone? I am willing to root this phone if thats what it takes.
Thanks

Please post the following information:
1. Model Number
2. Android Version, found by going to Settings > More > About device.
3. Firmware Version (AP, CP, CSC), found by dialing *#1234# in the dialer or by installing Phone Info from the Play Store and running it.
4. Service Provider
5. Country
6. Is the phone rooted? (Yes/No)
7. Is a custom ROM installed? (Yes/No, and the name of the ROM)

1. GT-i9505
2. Version 4.2.2
3.Firmware Version
AP: I9505XXUDMH8
CP:I9505XXUDMH8
CSC:I9505XXDMHA
4.Globe
5.Philippines
6.No
7.No

From appearances the ROM that was installed was for a carrier unlocked unit. If the S4 is still tied to Globe that would explain why Kies didn't work. The correct version for you, based on the information given, is here. Flash it using Odin.

After that i can update the phone? Can i use Odin v.3.10.6? Thanks sir
By the way can i use different version like the international version?

1, That's the current ROM. If Samsung pushes an OTA update you should get it without any trouble.
2, Odin 3.10.6 is fine.
3. If your phone is carrier unlocked you can install any ROM you wish. However, you wouldn't get any OTA updates and Kies would report that the ROM and the device don't match. If your phone is not unlocked, it's not recommended to flash other ROMs and to stick with the ROM for your device.

How can i determine if its carrier unlocked? My phone can use other service providers here in the philippines, does that mean that it is carrier unlocked? Thanks sir

If you insert a SIM from another provider and can get service on the S4 then the phone is carrier unlocked.

If downloaded the version that you shared can i still use different sim card? If not can you send the link of the version that can be used by different carrier just to make sure? Thanks sir

Yes. Once you're unlocked, the ROM you install doesn't matter too much. Any SIM card should work in the S4.

1. Which version saves battery better the version 4.4.2 or 5.01? Because im just after the battery performance sir.
2. Can my firmware version be the reason why my phone sometimes cant detect my sim card and will be needing to restart my phone. Sometimes even i restart my phone my phone cant still detect my sim card so i need to restart it again. Is it a hardware or a software issue?
3.If im not satisfied with the battery performance of lolipop can i just repeat the steps you gave but instead use the 4.4.2 version provided by globe at the same site you gave?
Thanks sir

[Q] 5.0 Factory ROM?

Noob here.
5.0 OTA update I got seems to be corrupt. Never rooted my phone. After the update I got the unlock boot screen and I have no cell or data service. Cool.
Resetting through software doesn't work. Hardware seems to be okay. I need to reflash via Odin but I'm not sure what ROM I should use. Tried two so far and got binary errors on both. Currently downloading the JasmineROM v1.0 hoping that it will work.
Any input is greatly appreciated.

Normal would be to flash the stock rom for your phone from sammobile .

Factory Rom ??
Hey m8.
If you want to stick with stock rom tell me your country and network provider and I'll send you the link to the rom. If you want to change the rom to something different (ie different country rom or country generic rom instead of network rom ) and still remain stock then pm me and ill send you the info.

billd2439 said:
Hey m8.
If you want to stick with stock rom tell me your country and network provider and I'll send you the link to the rom. If you want to change the rom to something different (ie different country rom or country generic rom instead of network rom ) and still remain stock then pm me and ill send you the info.
Click to expand...
Click to collapse
Wow

No signal i9500 after downgrading to 4.4.2 [i dont know which modem should i flash]

Soory if it sounds dumbish, im from romania, carrier - orange. I flashed some stock firmware MBC-Germany or so, if it counts, that's the one i used to flash all the time since romania was not withing those firmwares. I know the device is old, i'm planning to buy a Letv 1s or redmi note 3 but i have to do something with this overheating thing, i can't sell it like that. I heard it wouldn't overheat on 4.4.2, if you have advice regarding this problem, please

Flashed several modems, got signal now but can't use mobila data -> "No signal found for mobile network". I tried modems starting with these letters: "XX,DK,DD". I'm now using DD one since i got best signal but no network signal at all, any solution for me ? IF IT COUNTS, i've been using cm13 android 6.0 before flashing stock 4.4.2 and i have an efs backup done @ TWRP recovery, tried restoring it, didn't solve anything.
EDIT : Still cannot be called -> "Not registered on network" - i'll try further modems hoping it will eventually solve my problem.
UPDATE: Tried them all @ Modem thread. I'm expecting help, can't solve this on my own, i'm a noob.

You sure you have an I9500? If so, it was imported. Enter download mode please and read off the information on the screen.

strephon alkhalikoi said:
you sure you have an i9500? If so, it was imported. Enter download mode please and read off the information on the screen.
Click to expand...
Click to collapse
odin mode
product name: Gt-i9500
current binary: Custom
system status: Custom
secure download: Enabled
knox warranty void: 1
ap swrev: A3
All written in caps lock, i dont know why all the letters went lowercase tho i've written that twice, in uppercase letters.

gabytzu339 said:
odin mode
product name: Gt-i9500
current binary: Custom
system status: Custom
secure download: Enabled
knox warranty void: 1
ap swrev: A3
All written in caps lock, i dont know why all the letters went lowercase tho i've written that twice, in uppercase letters.
Click to expand...
Click to collapse
There is no firmware for Romania as the I9500 isn't available in Romania. Thus any I9500 firmware from sammobile.com should work. Flash the full firmware via Odin and not just the modem.

Strephon Alkhalikoi said:
There is no firmware for Romania as the I9500 isn't available in Romania. Thus any I9500 firmware from sammobile.com should work. Flash the full firmware via Odin and not just the modem.
Click to expand...
Click to collapse
I mentioned that all the problems started when i flashed GERMANY STOCK ROM 4.4.2.

I'm going to ask an odd question here, but do you still have the original box? If you do, the full model number of the phone will be on it, e.g. I9505ZKAO2U. If you have that full model number, post it here.
In the meantime, try installing one of these.

Strephon Alkhalikoi said:
I'm going to ask an odd question here, but do you still have the original box? If you do, the full model number of the phone will be on it, e.g. I9505ZKAO2U. If you have that full model number, post it here.
In the meantime, try installing one of these.
Click to expand...
Click to collapse
Didn't buy it new, i don't have the box of it anyway. How would that help ? It's not a fake s4 for sure if you have any doubt.

The full model number on the box as described would have allowed me to pinpoint the original firmware that was supposed to be on the phone. The last three letters are the CSC of the phone, and thus the firmware that the phone should be using.
Now, the only way to find out that information is by parsing it via the IMEI, which has the country of origin within it. To the best of my knowledge, none of the sites that allow you to enter IMEI numbers will retrieve that information. IMEIData.net used to do it, but require a subscription now.

Strephon Alkhalikoi said:
The full model number on the box as described would have allowed me to pinpoint the original firmware that was supposed to be on the phone. The last three letters are the CSC of the phone, and thus the firmware that the phone should be using.
Now, the only way to find out that information is by parsing it via the IMEI, which has the country of origin within it. To the best of my knowledge, none of the sites that allow you to enter IMEI numbers will retrieve that information. IMEIData.net used to do it, but require a subscription now.
Click to expand...
Click to collapse
Imei is unknown, got efs backup from back when i was on 6.0 gearcm. But i can't read it in any way. Tried restoring it, the imei is still unknown.

Take it in for service, especially if the EFS backup doesn't restore the IMEI to the device using the EFS Backup tool.

Strephon Alkhalikoi said:
Take it in for service, especially if the EFS backup doesn't restore the IMEI to the device using the EFS Backup tool.
Click to expand...
Click to collapse
I really doubt that's so much of a problem. I remember encountering a similar problem 1 year ago when i flashed 4.4.2 rom over 5.0. I can't remember what i've done but i know i had been struggling for 3 or 4 days. I remember, anyway, it was related to some applications from play store, one called busy box or so. Moreover, then i had no EFS BACKUP. That's why im so careful now with it. My guess is that if i flash back to 5.0 that problem will be gone, but the phone is overheating, unusable if you ask me. Hope someone will be able to help me
Found that on youtube - https://www.youtube.com/watch?v=XT42ri37RBU.
Now my question is how do i find my imei within that backup cause the files are .md5/.info/.win/.win.md5.
UPDATE : Flashed that rom, same problem.

Bump. Flashed gearcm 6.0 and a XX modem and its working well now. Any help there, still? I have to flash 4.4 again soon and I need a solution.

Actually, the point is simple:
Anytime you get unknown baseband after downgrading, flash Lollipop modem back, done.
Sent from my ASUS_Z00A using XDA Labs

Firmware change on S7 edge.

Hello everyone. I'm new here. I wanted to know if I can change my S7 edge (exynos) sm-g935fd firmware from UAE to India. I am currently on Oreo G935FXXS8ETCA Xsg which has bootloader 8 if I'm not wrong, but I want to install ins firmware G935FODD7ETA1 also Oreo which has bootloader 7 . Is this switch possible?
P.s. I want to change firmware bcoz I am not getting volte on my phone. I've tried a few things without any luck. And the only solution seems to be to change my CSC. Any help will be appreciated.

zeeshanattarwala said:
Hello everyone. I'm new here. I wanted to know if I can change my S7 edge (exynos) sm-g935fd firmware from UAE to India. I am currently on Oreo G935FXXS8ETCA Xsg which has bootloader 8 if I'm not wrong, but I want to install ins firmware G935FODD7ETA1 also Oreo which has bootloader 7 . Is this switch possible?
P.s. I want to change firmware bcoz I am not getting volte on my phone. I've tried a few things without any luck. And the only solution seems to be to change my CSC. Any help will be appreciated.
Click to expand...
Click to collapse
As far as I know you can't downgrade due to antirollback protection. I don't imagine switching firmwares would work very well at all

TheExploitedOne said:
As far as I know you can't downgrade due to antirollback protection. I don't imagine switching firmwares would work very well at all
Click to expand...
Click to collapse
It not a rollback technically it's more of a sideways move but I might be wrong. Is it because of the older bootloader on the firmware I want to switch to?
Thanks for the reply.

zeeshanattarwala said:
It not a rollback technically it's more of a sideways move but I might be wrong. Is it because of the older bootloader on the firmware I want to switch to?
Thanks for the reply.
Click to expand...
Click to collapse
If you attempt to switch your bootloader to an older version it can cause a hard brick putting the device into EDL mode but I do believe you can switch the system a bit

So there is no way to change the firmware? Is there any way I can get volte

zeeshanattarwala said:
So there is no way to change the firmware? Is there any way I can get volte
Click to expand...
Click to collapse
You should be able to swap the system partition and CSC to something else as long as your not in any kind of Android Verified Boot

I don't know what that is. But I've only been using stock ROMs from ota updates. My phone isn't rooted either. I just want to activate volte on my phone. I would really appreciate if you could help me.
Btw thanks for the prompt replies.

zeeshanattarwala said:
I don't know what that is. But I've only been using stock ROMs from ota updates. My phone isn't rooted either. I just want to activate volte on my phone. I would really appreciate if you could help me.
Btw thanks for the prompt replies.
Click to expand...
Click to collapse
You're absolutely welcome! I'll have a search around Google and maybe point you into the right direction. I'm sure there is a flashable firmware for Odin (combo-firmware) that enables this
EDIT:
Because your on an International chipset (Exynos) you can actually flash a custom OS which supports the Volte. Just ensure you've taken the steps to unlock the bootloader through the developer options in settings (enable OEM unlock)

Don't unlock your bootloader and dont root your phone
if something goes wrong the EFS patition will corrupt and you are on U8
U7 combination firmware is not available and we dont know when will it will be available
you have to download U8 rom and flash home csc from U7 INS (latest software available for India)
it will enable Volte on your phone
make sure to tick nand erase when flashing Autoboot and f.reset time

Tapas27s said:
Don't unlock your bootloader and dont root your phone
if something goes wrong the EFS patition will corrupt and you are on U8
U7 combination firmware is not available and we dont know when will it will be available
you have to download U8 rom and flash home csc from U7 INS (latest software available for India)
it will enable Volte on your phone
make sure to tick nand erase when flashing Autoboot and f.reset time
Click to expand...
Click to collapse
Unlocking and root have nothing to do with the EFS partition. Sounds like you may have did something like modifying it and caused data to be corrupt and you never kept a backup.

TheExploitedOne said:
Unlocking and root have nothing to do with the EFS partition. Sounds like you may have did something like modifying it and caused data to be corrupt and you never kept a backup.
Click to expand...
Click to collapse
once i root my device then after monts i decided to go back on stock
then after some monts i decided to try NFE 9.0 Black Diamond after that i get many errors and made a mistake
6 monts before i didn't know things now i know things like bl and opening and booting phone wihtout bl and many more
its the easiest method to get INS VOLTE on UAE Exynos Model
My phone is running smooth but efs is corrupted that makes S/N No. none and no network
Phone is dead from march
Lets hope for U7 and U8 combination firmware

Thanks for the help. Really
Volte used to work before the Oreo update. And won't a custom ROM trip my Knox? (I use secure folder). I recently tried to flash a stock ROM with modified CSC file to get volte working on my S6 g920f. But it didn't work. It tripped my Knox and now my short codes don't work and CSC shows blank. Calls work though. But no volte.

zeeshanattarwala said:
Thanks for the help. Really
Volte used to work before the Oreo update. And won't a custom ROM trip my Knox? (I use secure folder). I recently tried to flash a stock ROM with modified CSC file to get volte working on my S6 g920f. But it didn't work. It tripped my Knox and now my short codes don't work and CSC shows blank. Calls work though. But no volte.
Click to expand...
Click to collapse
You can wait for the INDIAN U8 STock and then flash it on your device with Home CSC which will surely enable volte
Remember With Nanderase f.reset time and auto reboot
Don't trip your knox i regret it!!

I would wait too if you trip Knox with a warranty then your SOL. If your lucky you won't be it's best to wait for the firmware

Well I am waiting till there is a stock firmware. But I don't think there will be an official update seeing as it's an old model phone and the official software support is only 2 or 3 years from the company. So fingers crossed. I might flash the ins version and try to make it work if I get a new phone and my S7 will become a spare.

And thanks for the help guys ?.
Now I'm thinking of flashing a custom ROM on my S6. Let's see ....

zeeshanattarwala said:
And thanks for the help guys ?.
Now I'm thinking of flashing a custom ROM on my S6. Let's see ....
Click to expand...
Click to collapse
I would it can increase the performance of the device and not cause an overheat. And you're absolutely welcome as well