SM-N960U Imei null, certificate failure - Samsung Galaxy Note 9 Questions & Answers

So I have a beautiful Samsung Galaxy Note 9, unfortunately it is the Snapdragon model... But as I was doing the new exploit to root this device I managed to lose the esn... and stupid me deleted the backup that was stored on a SD card... I have been able to get the IMEI restored to the original using EFS Pro however I'm still facing issues with imei cert fail. I'm rather new to EFS pro and I've never really faced this problem this bad before.. I've been reading this website for years now and this is my 2nd post.. that's how bad it is.. some guidance would be awesome...

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Please I need your HELP...!

I'm still with my broken SGS3 mini (GT-i8190) using it only for computer. I cannot make any call or something like that, so the internal signal doesn't work.
My phone broke about a year ago (IMEI null, not generic; Serial Number modificated; unknown baseband). This happended when I tried to flash the thirth time the ENOX ROM, and a couple of days after the phone begun to run slower, and 4 hours after (during the same day) the phone have frozen and didn't boot anymore.
Then I tried to flash (stocks ROM, stocks ROM with root, CM, Carbon ROM, etc...) and I cannot regenerate or recover the IMEI/SN/Baseband.
I have not any box to try to fix my phone, and I cannot buy one (a lot of money for me just now).
I thought that if it possible a thing, I would like to test but I don't know if it's possible.
I was thinking in take a entire EFS folder from other device SGS3 mini (same model, no L/N) and try to edit the files that contains the IMEI information and this thinks with hexadecimal editor. It would be possible? Or it's stupid try to do this? I don't know... **** (sorry).
CrashOverride93 said:
I'm still with my broken SGS3 mini (GT-i8190) using it only for computer. I cannot make any call or something like that, so the internal signal doesn't work.
My phone broke about a year ago (IMEI null, not generic; Serial Number modificated; unknown baseband). This happended when I tried to flash the thirth time the ENOX ROM, and a couple of days after the phone begun to run slower, and 4 hours after (during the same day) the phone have frozen and didn't boot anymore.
Then I tried to flash (stocks ROM, stocks ROM with root, CM, Carbon ROM, etc...) and I cannot regenerate or recover the IMEI/SN/Baseband.
I have not any box to try to fix my phone, and I cannot buy one (a lot of money for me just now).
I thought that if it possible a thing, I would like to test but I don't know if it's possible.
I was thinking in take a entire EFS folder from other device SGS3 mini (same model, no L/N) and try to edit the files that contains the IMEI information and this thinks with hexadecimal editor. It would be possible? Or it's stupid try to do this? I don't know... **** (sorry).
Click to expand...
Click to collapse
Yes your EFS is broken. EFS is a partition and not just a folder You can backup a EFS from a another s3 mini and restore it to your one but you will get signal problems example WiFi because same MAC address) and the other s3 mini too. You should know the IMEI number is NOT saved in EFS partition, the real IMEI is saved in a hidden partition so it means you didn't lose your IMEI. But your IMEI security key code (it's saved in /efs>imei) is gone and it means you will never get access to your IMEI number again.
xXPR0T0TYPEXx said:
Yes your EFS is broken. EFS is a partition and not just a folder You can backup a EFS from a another s3 mini and restore it to your one but you will get signal problems example WiFi because same MAC address) and the other s3 mini too. You should know the IMEI number is NOT saved in EFS partition, the real IMEI is saved in a hidden partition so it means you didn't lose your IMEI. But your IMEI security key code (it's saved in /efs>imei) is gone and it means you will never get access to your IMEI number again.
Click to expand...
Click to collapse
Thanks for all...
Imei is probably stored in CSPSA partition which is mmcblk0p9. I can see my serialnr in there and referees to modemfs, but the rest is encrypted.
I started to look at this a bit closer today to see if I can find out how this all is put together.(efs/modemfs/CSPSA).
tys0n said:
Imei is probably stored in CSPSA partition which is mmcblk0p9. I can see my serialnr in there and referees to modemfs, but the rest is encrypted.
I started to look at this a bit closer today to see if I can find out how this all is put together.(efs/modemfs/CSPSA).
Click to expand...
Click to collapse
Please I need help!!!! I say what happended here... Could yo help me?
Mod Edit
May I remind you of the XDA RULES # 5
Thread closed
malybru
Forum Moderator

Recovering EFS and IMEI without backup

Hello everyone, I have a Note 3 N900A for 2 years, I am from venezuela, Note 3 N900A band 800 Lte blocked, I would say almost everything is blocked. However, following on the internet how to open the band I have caused damage to my terminal, deleted the imei and baseband, reading xda, htcmania and other pages manage to recover the baseband but still without imei, qpst gives error when restoring the file Qcn backup, efs is corrupt, try to use NV-items but access denied when writing item 550, I would like to know could help me or if there is any possible solution. Thank you

Help note 9

Ok guys need someone to guide me here. A friend of mine has a Note 9 from Verizon. The imei shows as 15 zeroes!. He was messing with the phone and factory binary to flash from verizon U to U1 to TMB rom, wish he accomplished but now the imei its all zeros, searching online found hardware boxes and things like that that will help you repair the imei but octupus box witch its the one we were looking at dosnt support imei repair of note 9
Then we found the software used by imeigurus that actually have a section for verizon phones that states : cert write IGST method
I think that by having a certification file for note 9 we can write the file using this program and get a new imei , buuuuuut , I found something about cert files not supporting CPID phones witch its the case of the Note 9, so at this point have no idea how to get new imei , any help will be appreciated , phone's out of waranty !
ypradera said:
Ok guys need someone to guide me here. A friend of mine has a Note 9 from Verizon. The imei shows as 15 zeroes!. He was messing with the phone and factory binary to flash from verizon U to U1 to TMB rom, wish he accomplished but now the imei its all zeros, searching online found hardware boxes and things like that that will help you repair the imei but octupus box witch its the one we were looking at dosnt support imei repair of note 9
Then we found the software used by imeigurus that actually have a section for verizon phones that states : cert write IGST method
I think that by having a certification file for note 9 we can write the file using this program and get a new imei , buuuuuut , I found something about cert files not supporting CPID phones witch its the case of the Note 9, so at this point have no idea how to get new imei , any help will be appreciated , phone's out of waranty !
Click to expand...
Click to collapse
Your "friend" should be able to get the IMEI from their Verizon account information, or, perhaps, on the box that it came with.
Please don't go to the laundry list of excuses that your "friend" has as to why they cannot get the IMEI.
If Verizon cannot help, contact Samsung.
Also, there may be other ways to retrieve the IMEI, use the search function here @ XDA. If there's a legitimate way to retrieve the original IMEI, it'll be here somewhere @ XDA.
Changing the IMEI is frowned upon here & at every other reputable site.
Sent from my SM-N960U using XDA Labs
From what I understand, flashing the old "U" firmware might restore the IMEI number.
This phone is about 3 - 4 months old, since most warranties last at least a year this is a bit short to say it's out of warranty.
ypradera said:
Ok guys need someone to guide me here. A friend of mine has a Note 9 from Verizon. The imei shows as 15 zeroes!. He was messing with the phone and factory binary to flash from verizon U to U1 to TMB rom, wish he accomplished but now the imei its all zeros, searching online found hardware boxes and things like that that will help you repair the imei but octupus box witch its the one we were looking at dosnt support imei repair of note 9
Then we found the software used by imeigurus that actually have a section for verizon phones that states : cert write IGST method
I think that by having a certification file for note 9 we can write the file using this program and get a new imei , buuuuuut , I found something about cert files not supporting CPID phones witch its the case of the Note 9, so at this point have no idea how to get new imei , any help will be appreciated , phone's out of waranty !
Click to expand...
Click to collapse
check the back of the phone...
This kind of discussion about changing imei is not allowed on XDA Forums. If you have a backup file you can use search button on XDA to restore it, if dont, you have to contact your mobile company.
Thread closed

Baseband + IMEI Unknown

Hello
I recently lost my s10 and now got my hands on a new one (exact same model)
I thought i was smart and restored a TWRP backup from the lost phone on the new one
I guess the mistake was that there was also the efs partition included in the backup
The rom (newest beyond) works without problems but the sim card is not recognized and baseband and IMEI both show unknown
so i flashed the original samsung firmware with odin but even then i have baseband and IMEI unknown
Did i just screw my new s10 or does anyone have an idea?
any help much appreciated
Anyone has an idea what I could try?
Or did I really kill my phone for good
My guess is that you may have wiped out the new phone specifics, such as IMEI and other things. I'm not sure if you can recover that in some way, or if you need to just find a way to get your old IMEI back. I would probably try to restore my old IMEI if I can (see if you can identify the old one from your carrier's website or something, for example).
schwinn8 said:
My guess is that you may have wiped out the new phone specifics, such as IMEI and other things. I'm not sure if you can recover that in some way, or if you need to just find a way to get your old IMEI back. I would probably try to restore my old IMEI if I can (see if you can identify the old one from your carrier's website or something, for example).
Click to expand...
Click to collapse
I know the original imei, it's printed on the phone but how could i flash that to my phone? Seems to be impossible
There are ways, but they are not allowed to be discussed here on XDA. I've seen Youtube videos that cover it as well.

N960F IMEI repair

imei went to zeros . was fixed online with a new imei. Since then i updated rom and have no signal. I'd like my original imei back or at least fixed again. Had enough of chasing fake apps with passwords and viruses. Any help appreciated. Thanks.
robuk71 said:
imei went to zeros . was fixed online with a new imei. Since then i updated rom and have no signal. I'd like my original imei back or at least fixed again. Had enough of chasing fake apps with passwords and viruses. Any help appreciated. Thanks.
Click to expand...
Click to collapse
go to repair shop dude
[GUIDE] Not registered on network fix - EFS failed to mount - NO IMEI or Zero IMEI
Today i got an issue for my N960F after flashing a custom ROM. I'm not sure till now what've gone wrong, but after rebooting my device i faced an issue that my SIM card can not register on network. Cellular network signal is full, but can not...
forum.xda-developers.com
If you have TWRP and a backup you have done via TWRP just do a Restore in TWRP but only restore the EFS - ODM and ODM Image partitions only. That will restore your IMEI.
My note 9 had all zeroes and I could not use it for over 9 months (purchased a replacement). Found an old TWRP backup while cleaning out my PC and this fixed it straight away.
Always do a TWRP backup and ensure you keep a copy of it off your phone.

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