Develop Bugs

IMEI shows Null/Null. No backup efs.

Long story short, I've got a Rogers Note II i317M that I did NOT modify, but someone else did. I suspect they flashed a ROM for the wrong type, therefore the IMEI under status shows unknown, and *#06# gives Null/Null.
The EFS folder is empty, and there is no backup made. Is it possible to find a copy of an EFS folder and insert my IMEI/SN?
I'm not familiar with how to use Odin to re-partition (never done that). Could that possibly restore the files needed? The phone will not connect to any towers nor recognize a SIM card.
THanks in advance for any help.
-Adam

Sorry, duplicate, please delete this one.

Phone can't read IMEI, Param_bin needed please!

Hi, my N7105 has lost the capability of reading its IMEI (and even knowing what model it is) after I flashed this: http://forum.xda-developers.com/showthread.php?t=2531965
I have an EFS backup, but it's useless, it seems that I need the param_bin for the N7105, because as I've read, the phone didn't really lost its IMEI, it only can't access it. Please help me!

Solved. Just flashed the via Odin the .bin files that were inside the .tar.gz backup made with EFS Pro, then the IMEI, model number and signal got back. Then EFS Pro was able to recognize my phone and restored the full backup, now even the serial number is restored. Hope this helps anyone who finds himself in a similar situation.

I am in a the same situation, but my efs backup is just a efs.img created by efs_backup_restore_win.
Restoring using it can't bring back my imei.
[Edit] EFS pro keep saying Device not connected. But I already granted the ADB connection in my phone.

Only EDGE Network After NAND Wipe

I have an AT&T S3 which, during some shenanigans I don't remember, was encrypted with a password I could not retrieve. I used Odin to erase the phone's NAND because I had a nandroid backup. This backup, however, was corrupted. I was able to use Odin to flash a stock firmware, but I now only have access to EDGE instead of LTE.
I have restored EFS and NV backups from another AT&T S3 with my IMEI and serial written to them, and my serial and IMEI display correctly in my phone's status window.
I have tried flashing every available modem for the phone.
I have tried numerous APN settings and *#*#INFO*#*# settings.
I have tried damn near every solution to similar problems in this forum.
Any more ideas?

Where did you get your EFS and NV, and how did you restore them?

shortydoggg said:
Where did you get your EFS and NV, and how did you restore them?
Click to expand...
Click to collapse
I used EFS Pro + Qualcomm tools to backup the EFS folder and NV data from a working AT&T S3. Doing this brought back my IMEI, but did not much else otherwise.
EDIT: To clarify, I used the tools to write my specific imei and serial to the backup before restoring that to my phone.

Ok, a lot of these usually don't get fixed, but I'm going to stick to here what worked for some.
First, I'm going to assume that you injected your IMEI correctly. I would next use the EFS Pro to format your EFS from the restore option at the top (then clicking format EFS), since that EFS came from another phone. Your EFS folder will automatically be re-created when you later reboot.
Next, I would download and unzip the attached file. Inject the .txt file with the nv reader /writer. The nv reader writer can be found in this thread.
http://forum.xda-developers.com/showpost.php?p=29514032&postcount=1
Follow steps 1-4, but instead of reading, you're writing the .txt file that you unzipped to your NV. It only contains missing information and should not touch your IMEI. Do not change the dec or hex range.
Reboot the phone and see what happens.

[Q] Is there a way to repair network problems in sgh-i317?

I have the note 2 from at&t and I can't even call with it because it has network problems, i have efs backup from efs professional, twrp and nv items made with qpst in .qcn extension and with a software called nv items reader writer that makes the file in .txt, everytime I restore those no matter the way I do it I've end with a crappy signal in my phone, even with no signal at all, I've erased the efs from the phone with odin, with efs professional and with the secret menu *#197328640* in umts/common/nv rebuild/erases all efs1/2/3, it says that erases rf cal too so I'm wondering if that could be the problem since I don't know what is that and didn't do a backup of that, so my question is if someone could help me with that problem, I've been like 3 months now with that issue and can't solve it even with my efs backups.
By the way, the antenna was repaced and the problem persist.
Thanks in advance and if I'm not so clear let me know.

Please somebody how to restore my IMEI

After i flash CM11 my imei is gone and i forget to backup my efs. How to get back my IMEI?? Back flashing my firmware region? Or what? Please help me. Thanks so much if you help me to solved my problem [emoji1]

EFS is a system folder in the root directory of your phone that contains very important and basic information about your device's identity like Wi-Fi MAC address, Bluetooth MAC address and the MOST IMPORTANT - IMEI address (nv_data.bin).
Now if this EFS partition accidentally gets corrupted or erased, your phone’s IMEI number will get erased and your device will become completely useless and you won't be able to make voice call further, as the carrier network will not recognize your phone. This can happen for a variety of reasons, sometimes flashing a wrong or corrupted ROM. This kind of damage is not accepted by the service center. Only solution that the service center provides is to replace the motherboard of the device and that costs a lot of $$$!
Only a BACKUP of your EFS can save your phone if something goes wrong with your EFS partition.
(Some of you have already messed up your IMEI. Check Troubleshooting forum for details.)
ORIGINAL POST:
http://forum.xda-developers.com/showthread.php?t=2420902