I'm using a Galaxy M20 (m205f). Trying to root it, I somehow messed up the radio and efs partitions. Tried to install the latest stock Rom and it updated the binary from U4 to U7 with a null IMEI and unknown baseband. The IMEI repair softwares need the modem and the modem version presently is of U7 binary which is pretty recent and no IMEI repair tool supports this modem version yet. Is there any way I can downgrade the modem? There's no lower Android version and no combination file for the U7 binary on the internet so I'm stuck. Can I somehow put an older CP/Modem (from lower binaries) and make it work with the latest firmware?
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hi guys, i want to ask something, i am having serious issue here! my phone was running android 4.1.2 but having no imei and unknown baseband. some thread stating if i was downgrading my fw, i will be having lost imei and unknown baseband issue, but in my case, the only fw that working was just android 4.1.2, and in my country, my phone was supposedly running on android 4.3. but when i am trying to install stock fw, i got a bootloop state. i have tried different method as such using xperifirm to download stock fw and updated fw, using pcc, but still suck in bootloop.
and my another question was, when i tried to relock my bl, flashtool showing different imei for my phone.
Hi.
I have Note5 at&t and it has Bootloader.
When I was trying to flash another stock at&t firmware, I've lost my IMEI number. As I learned, in order to get back my IMEI, I have to flash my old firmware, but I didn't memorize my old firmware name. And because of the bootloader, there is no way to learn old firmware's name with the root access. I can't root my device. Is there any solution?
Thank y'all in advance.
hi, i have the same problem, tried to downgrade to marshmallow but got an error, i flashed stock AT&T nougat firmware and now have no imei info or baseband info, i have tried flashing n920aucu4eqk6 and n920aucu4eql1 which are the 2 latest firmware versions but still having same problem...help! please
in case this helps anyone, i managed to solve my issue, i downgraded firmware to a 5.1.1 combination firmware, where the baseband and the imei were still being picked up by the phone, then i reflashed the phone with PK1 marshmallow rom (except i did not flash the CP file), only flashing the BL, AP and CSC files and now the phone is running marshmallow and picking up the imei and baseband information and can make calls and send text and picture messages.
thank you
Hello guys,
I have Samsung Note 9 (SM-N960F) and updated to Pie.
I usually use custom ROMs.
Recently after flashing a new custom ROM, I lost IMEI and signal.
To fix the problem, I flashed stock ROM successfully but IMEI is empty (UNKNOWN). There is not network signal.
I have previous custom ROM TWRP Backups. I restored to the old TWRP backups. But still the IMEI is UNKNOWN and no signal.
I had efs backup of a custom ROM as efs.img. I tried to restore it using Partition Backup app and terminal but no success.
I flashed Alexander's ROM (DEV BASE) as indicated in this post:
https://forum.xda-developers.com/galaxy-note-9/help/lost-imei-please-help-t3847336
But still the IMEI and the signal problem is not resolved.
If you have any idea, please help me fix it.
Thanks.
mbomangaso said:
Hello guys,
I have Samsung Note 9 (SM-N960F) and updated to Pie.
I usually use custom ROMs.
Recently after flashing a new custom ROM, I lost IMEI and signal.
To fix the problem, I flashed stock ROM successfully but IMEI is empty (UNKNOWN). There is not network signal.
I have previous custom ROM TWRP Backups. I restored to the old TWRP backups. But still the IMEI is UNKNOWN and no signal.
I had efs backup of a custom ROM as efs.img. I tried to restore it using Partition Backup app and terminal but no success.
I flashed Alexander's ROM (DEV BASE) as indicated in this post:
https://forum.xda-developers.com/galaxy-note-9/help/lost-imei-please-help-t3847336
But still the IMEI and the signal problem is not resolved.
If you have any idea, please help me fix it.
Thanks.
Click to expand...
Click to collapse
what fine model you have?
anyways flash back full latest stock firmware for your device and ull get back imei.
use frija or samfirm tool to quickly download firmware.
when you flash dled firmware with odin, flash all .md5 files. also flash csc.md5 instead of home_csc.md5
if you fully flash latest October/November firmware as suggested it will work.
if you skip steps or don't use the latest files then it might not work.
once back on stock with signal, follow dr ketans guide for OEM root fix as per his pinned topic in the note 9 general discussion forums.
then flash back a recent custom rom.
suspected cause of your problems:
-modem mismatch with device model
-modem mismatch compaired to rom base
you should always flash/maintain BL and CP manually with Odin and never through rom zips. and always read rom OP regarding modem and bootlaoder.
bober10113 said:
what fine model you have?
anyways flash back full latest stock firmware for your device and ull get back imei.
use frija or samfirm tool to quickly download firmware.
when you flash dled firmware with odin, flash all .md5 files. also flash csc.md5 instead of home_csc.md5
if you fully flash latest October/November firmware as suggested it will work.
if you skip steps or don't use the latest files then it might not work.
once back on stock with signal, follow dr ketans guide for OEM root fix as per his pinned topic in the note 9 general discussion forums.
then flash back a recent custom rom.
suspected cause of your problems:
-modem mismatch with device model
-modem mismatch compaired to rom base
you should always flash/maintain BL and CP manually with Odin and never through rom zips. and always read rom OP regarding modem and bootlaoder.
Click to expand...
Click to collapse
Thank you for your info.
Currently I have slow internet connection. Anyways, I have started downloading the latest firmware using frija.
I will let you know after flashing the latest firmware when the download completes.
Thank you.
Exact same thing happened to flashing the same rom. Made my sim cards not detect. My phone has been down for a week. Finally have a day of work yesterday and fixed it by flashing stock bl, cp, and csc then flashing back to tgp rom.
bober10113 said:
what fine model you have?
anyways flash back full latest stock firmware for your device and ull get back imei.
use frija or samfirm tool to quickly download firmware.
when you flash dled firmware with odin, flash all .md5 files. also flash csc.md5 instead of home_csc.md5
if you fully flash latest October/November firmware as suggested it will work.
if you skip steps or don't use the latest files then it might not work.
once back on stock with signal, follow dr ketans guide for OEM root fix as per his pinned topic in the note 9 general discussion forums.
then flash back a recent custom rom.
suspected cause of your problems:
-modem mismatch with device model
-modem mismatch compaired to rom base
you should always flash/maintain BL and CP manually with Odin and never through rom zips. and always read rom OP regarding modem and bootlaoder.
Click to expand...
Click to collapse
Thank you bobber10113 for your guide.
I followed your guide and downloaded October firmware update and flashed.
But the problem is still there. No IMEI, No baseband.
mbomangaso said:
Thank you bobber10113 for your guide.
I followed your guide and downloaded October firmware update and flashed.
But the problem is still there. No IMEI, No baseband.
Click to expand...
Click to collapse
what was the outcome of the odin flash, and what was flashed in each slot?
what version of odin are you using?
bober10113 said:
what was the outcome of the odin flash, and what was flashed in each slot?
what version of odin are you using?
Click to expand...
Click to collapse
Previously, I flashed October update. The flashing process completed successfully but the problem (IMEI & UNKNOWN) was not resolved. I posted the problem is not resolved here.
Then I downloaded another more recent update from another region and flashed and the problem is gone. My phone is full life.
Thank you bober10113. You helped me fix this problem.
Thank you m. murray too. I appreciate your help.
I was trying to Install Custom recovery, Custom ROM & Magisk. After successful installation i was unable to connect to Cellular network. when i checked Lost IMEI & Serial Number (Both 000000000) & i don't have EFS backup. Is there a way to recover my IMEI & SN.:
Information:
Current ROM: Latest Stock android 10
Model: 960F (Exynos)
Flash latest BL and CP through odin.
AlexisXDA said:
Flash latest BL and CP through odin.
Click to expand...
Click to collapse
Hi,
Thanks for reply . i have done both still IMEI is 000000000000.
Bump
Any help will be highly appriciated
Believe you can't do anything about it, if you don't have an EFS backup, you can't "recover" the IMEI, Serial #, etc. You can probably use this and change the IMEI to a screenshot of your own IMEI, but I am not entirely sure if it works or not.
Hope this might help.
A while ago while I was trying to fix my phone when it was bricked, I used a tool that screwed up my baseband version and IMEI numbers. I don't have backups of the partitions related to those but I have the IMEI numbers.
When I try to install engineering ROM on the phone it the install fails due to exaid partition not being signed. My phone currently runs LineageOS along with the LineageOS Recovery.