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[SOLVED] i317M - not connecting to network

Hello,
I started with Galaxy Note 2- i317M (rogers, canada), rooted with DN3 V4 beta installed. But I wanted to try DN4, so I created a back-up using TWRP and tried installing DN4. However, I later realized that it is not for the LTE versions yet and phone did not recognize SIM anymore. So I wiped the data and tried installing dn3 v5.5, but the phone still did not connect.
Losing all hope I installed DNv4 again, but it still did not work. So i finally just tried restoring from the back-up I made using TWRP. Everything in the phone is same except no network.
Finally I tried restoring from back-up after doing a complete wipe of internal storage and everything except the external card. But still the error does not go away. I researched more about the error and the fact that my imei shows up as null/null. I used the instructions of using EFS professional, but it did not work. The model number in my phone now shows up as SM-G900F and baseband shows as unknown, and it shows DN3V5 Rom despite the clean-up and restoring from DN3V4.
Any guidance available on this please...I need specific steps because after 12 hour search and try-outs I am lost now.....
UPDATE:
Solved it! Here is the solution for anyone in this problem
http://forum.xda-developers.com/showpost.php?p=46231268&postcount=4
worked like a charm.. No reason to throw this and get a new phone

I have had this problem. It didn't happen whilst flashing though. My imei number is now a generic one and I had no efs backup. After 5 days of trying everything I can find I'm giving up. My note 2 is dead as far as I'm concerned. As far as I'm aware to get my imei back I'll have to send it for repair so I'll buy another phone and not a Samsung

I don`t think your phones are dead. I didn`t try it personally, but I`m sure you can restore your EFS back. Just you need to do some research, maybe you could start here:
https://www.google.ro/?gws_rd=ssl#safe=off&q=how+to+recover+efs+folder
Do not give up, read on end you will eventually do it! And, by the way, next time maybe you don`t forget to back up before doing anything to your phone!

nmugurel2003 said:
I don`t think your phones are dead. I didn`t try it personally, but I`m sure you can restore your EFS back. Just you need to do some research, maybe you could start here:
https://www.google.ro/?gws_rd=ssl#safe=off&q=how+to+recover+efs+folder
Do not give up, read on end you will eventually do it! And, by the way, next time maybe you don`t forget to back up before doing anything to your phone!
Click to expand...
Click to collapse
I did back up. with both titanium backup and twrp but it is not working. And I dont think I will give up. I will format is all together and start over if i have to.
Do you think it will work if I format it entirely and start over?

dexterousyash said:
I did back up. with both titanium backup and twrp but it is not working. And I dont think I will give up. I will format is all together and start over if i have to.
Do you think it will work if I format it entirely and start over?
Click to expand...
Click to collapse
Glad to see you solved it!

[Q] My imei is blank. Backup missing as well.

So I made a backup and promptly flashed a new rom as soon as I got my OPO it hasn't even been activated yet. When I went to activate it I realized my imei number was null. I looked for my backup but I must have deleted the backup somewhere along the way. Is there some way to restore this. Like if I flashed the stock image would it fix this? I saw another thread for fixing a corrupted EFS but is that the same thing. I'm sorry I don't really understand much of this stuff.

Thread concerning corrupted efs is where you need to be.

Restored Old Phone To New; Now Can't Connect To Network?

Hey all,
I restored a backup of my old phone made in TWRP – a full backup, including Boot, System, Data, Cache & EFS – onto a new D850 I got. Both the old phone and the new one were able to connect to AT&T before this.
Now the new phone, with the restored backup from the old one, displays a network searching icon indefinitely upon reboot.
Any thoughts as to how to fix this?
- Andi

phnord said:
Hey all,
I restored a backup of my old phone made in TWRP – a full backup, including Boot, System, Data, Cache & EFS – onto a new D850 I got. Both the old phone and the new one were able to connect to AT&T before this.
Now the new phone, with the restored backup from the old one, displays a network searching icon indefinitely upon reboot.
Any thoughts as to how to fix this?
- Andi
Click to expand...
Click to collapse
Why did you restore a EFS back from your old phone to your new one? Unless you backed up the EFS from your new phone there may not be a way to fix this. EFS Is different for each phone you should never restore an EFS from a different device.
Sent from my iPhone using Tapatalk

My *guess* is that I should not have overwritten the new phone's EFS with the old phone's? I think I backed up the EFS of the new phone before doing so; will restoring it fix my issue? If not, how screwed am I?

phnord said:
My *guess* is that I should not have overwritten the new phone's EFS with the old phone's? I think I backed up the EFS of the new phone before doing so; will restoring it fix my issue? If not, how screwed am I?
Click to expand...
Click to collapse
See if you have a backup of the new phones EFS try that and report back. If not it's pretty much a WiFi only device.
Sent from my iPhone using Tapatalk

I restored the new phone's original EFS, and all is well.
FWIW, my reasoning behind flashing everything from the old phone to the new was that is what it said to do in every guide I read about transferring from old to new. I didn't realize EFS was supposed to be excluded; I didn't realize the EFS from one phone would be incompatible with another
In any case, crisis averted – thanks for the confirmations along the way

phnord said:
I restored the new phone's original EFS, and all is well.
FWIW, my reasoning behind flashing everything from the old phone to the new was that is what it said to do in every guide I read about transferring from old to new. I didn't realize EFS was supposed to be excluded; I didn't realize the EFS from one phone would be incompatible with another
In any case, crisis averted – thanks for the confirmations along the way
Click to expand...
Click to collapse
It's not that the EFS is not compatible. But the EFS stores info like IMEI etc. you can't have two phones with the same imei. Each EFS is different. When restoring you don't have to restore every thing though. I'm glad you had a backup! As without that it pretty much would had been an wifi only device. Your very welcome .
Sent from my iPhone using Tapatalk

Crashed my S7? No Sim Card detected!?!?

Hey guys,
and thank you in advance for helping me!
Well, yesterday I wanted to install the latest Lineage OS on my S7. As usually I installed TWPR (latest version) first, put the Lineage image on the SD Card and flashed it. However sth went wrong and my "data" partition was wiped as well... Now ithe phone was only booting into the TWPR Bootscreen. Nothing else happend. So I thought i messed it up.
So i formated everything possible into "EXT 4". Finally I could run TWPR again and also install the Lineage OS. So far so good... However now my Sim Card is not detected. I tried to reinstall the Lineage OS serveral times - the issue stays the same!
I used latest Odin3 on a Win 10 machine to install the TWPR...
My provider is 1&1 if that matters.
Can anyone please help me? Because I just called a Samsung certified reseller and they told me, that the only chance is to install a new motherboard, which will cost around 300€!!!!! Thats not an option, when u take a look at the prices right now for a new S7
Thank u sooo much!

Have you also formated your EFS partition? Your IMEI is stored into this partition and without IMEI the phone cannot log in into a mobile network.
If you have a backup of your EFS partition, restore this, and the SIM should work fine.

Phone does not detect SIM
profi_fahrer said:
Have you also formated your EFS partition? Your IMEI is stored into this partition and without IMEI the phone cannot log in into a mobile network.
If you have a backup of your EFS partition, restore this, and the SIM should work fine.
Click to expand...
Click to collapse
Hey,
I have the same issue today, how can I get EFS partition if for some reason I have lost it?
I still have phones imey at the back of the phone though.

Just male a backup of the EFS and store it at a save place (PC/Cloud). If the IMEI on the phone wont work, just copy it back from the PC to the Phone

Mirror one Twrp Backup on another phone

Hi,
I hope someone can answer this question:
I dropped my Oneplus 7pro and the screen cracked. Its still useable but i bought the same model again and want to use the backup of the old phone. I took a full backup from the old phone and now i am not sure if should use the whole backup or f.e. only the system and data image?
Anyone didi this before?
Thx in advance
Edit: Twrp on the new phone didnt even recognize the Backup file from the old one, so I am doing it with Oneplus switch app.

System and data may work. But nothing else. You'll end up with a messed up efs if you do