Develop Bugs

[Q] EFS Backup

I have been trying to backup efs data prior to flashing away merrily.
I believe this important given the various reports of glitches.
I tried the guidelines here---
and had the following error---
busybox tar zcvf /sdcard/efs-backup.tar.gz /efs
busybox tar zcvf /sdcard/efs-backup.tar.gz /efs
tar: invalid option -- z
However when I removed the 'z' from 'zcvf' I had a verbose output of 37 files and an efs-backup.tar file.
Would this be the correct efs tarball?
The code --busybox cat /dev/block/stl3 > /sdcard/efs_dev-block-stl3.img
seemed to work correctly generating a disc image file.

I know less than you do about this, but couldn't you just go into your root with an application like root explorer and just back up the efs that way?
-Hercules composed this post and threw it at your face to be read-

does anyone have an efs backup they can share?
something went wrong with mine and i no longer have a lock screen and everytime i reboot, bluetooth is turned on and the screen is set to never shut off.

i just use root expolorer and find the efs file and copy it and paste it in ext sd and then transfer to pc for safe keeping, thats how it works for me.

movieaddict said:
i just use root expolorer and find the efs file and copy it and paste it in ext sd and then transfer to pc for safe keeping, thats how it works for me.
Click to expand...
Click to collapse
Yea I did the same but some how my memory card reformatted before I could save it on my computer and now I need to restore it and I no longer have one
Sent from my SGH-T989 using XDA App

Please Help
anyone has their efs backed up that they can share mine got deleted and i don't know how to recreate it

madamada31 said:
anyone has their efs backed up that they can share mine got deleted and i don't know how to recreate it
Click to expand...
Click to collapse
Just download nitrality app and backup efs with that. It's in the tools settings.
Sent from my SGH-T989 using Tapatalk

richardlibeau said:
Just download nitrality app and backup efs with that. It's in the tools settings.
Sent from my SGH-T989 using Tapatalk
Click to expand...
Click to collapse
as i said my efi folder is empty and the phone doesn't show any IMEI.. i tried the backup but it didn't do anything. is there any way to recreate the necessary files in that folder..

[INFO] Save Your EFS Folder !!! (not yet T989 compatible)

[ATTENTION] Before Changes In Rom With Odin, Kies (Update Firmware) Or Flashing Save Your EFS Folder
Its Always Better To Save Your EFS Folder, Just To Be SAFE...
Why?
If You Lose Your IMEI # You Can't Download Apps Through Market Or Etc. In Turn Making You Spend Money At A Samsung Repair Center...
What If I Already Odined, Used Kies (Update Firmware) Or Flashed A Rom?
As Long As Your IMEI # In Settings And The One Under The Battery Match Your Fine...
How Do I Get My IMEI # Back If It Ever Changes?
As Long As Your Device Is Rooted Replace Backup With Root Explorer Or Use The App To Repair...
Must Be Rooted And Have Busybox...
Use This App:
http://forum.xda-developers.com/showthread.php?t=1308546
Remember Its Really Important...
App Thanks To Lyriquidperfection...

I Dunno If T-Mobile GS II Needs To Do This But Its Always Better To Be Safe...

it doesn't work on the T989
Samsung made changes to the EFS folder, the bin files are not there anymore
they are just redirect links to some hidden locations in the FS dagentooboy is still trying to crack the case

AllGamer said:
it doesn't work on the T989
Samsung made changes to the EFS folder, the bin files are not there anymore
they are just redirect links to some hidden locations in the FS dagentooboy is still trying to crack the case
Click to expand...
Click to collapse
Hey I Got An Alternative Use Root Explorer Go To Root Find EFS And Press And Hold It When Menu Pops Up Press Copy, Go To SD Card And Press Paste... There Should Be A Copy Of It Now On The SD Card Plus The Original....
Edit:
I Found That Its Exactally The Same As The Tar From The Tool I Refered Everyone To, All The Files Match Up...
Also If You Look In Etc/Firmware/Misc_mdm/Image You Find 3 EFS MBN Files, I Didn't See Anything In FS... So Im Guessing Its In The Rest Is In Firmware...

Still no update on where the nv-data.bin or nv-data.bak files are, huh? The i9100 has them in the efs folder but still cannot locate them for t989.
I'm having these same issues with an unknown IMEI, IMEI SV, and baseband.

[Q] Backup one galaxy nexus to another?

Hi all:
I got a new galaxy nexus that i'd like to use as my main phone, but I don't want to go through the trouble of setting it up again, my current gnex is just perfectly setup. They both have the same version of android (4.0.4).
I was going to to a clockwork mod backup of the current phone, move it to the new phone and restore there, but I think I'll mess up the IMEI if I do that?
What additional steps do I need to carry out to preserve the phone's IMEI?
Thanks in advance.

pcbroch said:
Hi all:
I got a new galaxy nexus that i'd like to use as my main phone, but I don't want to go through the trouble of setting it up again, my current gnex is just perfectly setup. They both have the same version of android (4.0.4).
I was going to to a clockwork mod backup of the current phone, move it to the new phone and restore there, but I think I'll mess up the IMEI if I do that?
What additional steps do I need to carry out to preserve the phone's IMEI?
Thanks in advance.
Click to expand...
Click to collapse
If both have absolutely the same ROM, restore just the data backup, not the system backup, and you should be fine.

You can copy the IMEI on the original nexus to the other? Wouldnt that be best?
Is so follow these steps (it may look much, but i dont think it would take long if u want to keep your original imei number!
You must have:
-Root
-Root explorer for copying files to and from EFS folder
-Android SDK for the ADB tools or Terminal in your phone.
IMEI is stored in ".nv_data" file in ORIGINAL SHIPPED EFS folder too, so you just have to do these:
1) make a copy of your EFS folder to your sdcard using root explorer and then make a backup of the folder to your computer [ to have another copy if you had to format sd card sometime ]
2) delete the EFS folder (BE SURE YOU HAVE BACKED IT UP IN A SAFE PLACE AS SAID IN STEP 1) from the root of your phone using root explorer.
3) reset the phone, after that, go to the root, and you can see that the EFS folder is still there, don't make any mistake, this EFS folder is new and generated by the android OS.
4) go to EFS folder using root explorer, and delete "nv_data.bin", "nv_data.bin.md5".
5) go to your backed up EFS folder on your sdcard, copy the "imei" folder to the EFS folder at the root of your phone, then again go to the backed up EFS folder at yout sdcard and copy the " .nv_data " file to your EFS folder at the root of your phone using root explorer, NOTE: the dot in first of nv_data is not a mistake, copy the ".nv_data" file.
6) make another copy of the ".nv_data" file in EFS folder in your phone, so you would have 2 copies of ".nv_data" in EFS folder
7) rename one of ".nv_data" files to "nv_data.bin" and another one to "nv_data.bin.bak"
8) at your PC open CMD at the ADB tool path, or run Terminal at your phone enter these commands:
adb shell ( use this command of you use ADB, if you're using terminal, skip this line )
su ( ALLOW THE MESSAGE CAME AT YOUR PHONE's DISPLAY BY SUPERUSER PROGRAM )
chown 1001:radio /efs/nv_data.bin
9) reset your phone.... after that you have your original IMEI. you can check your IMEI by dialing *#06#.
Sent from my LT26i using xda premium

HinotoriBR said:
If both have absolutely the same ROM, restore just the data backup, not the system backup, and you should be fine.
Click to expand...
Click to collapse
Thanks for the suggestion. Unfortunately, it doesn't seem to work, my IMEI gets clobbered to some generic IMEI when I do this.
Off to trying try sikiduck's suggestion.

Sikiduck said:
IMEI is stored in ".nv_data" file in ORIGINAL SHIPPED EFS folder too, so you just have to do these
Click to expand...
Click to collapse
Stupid question... there is no efs folder. Do you mean /factory? There are nv_data files in /data/radio as well.
I'll play with these a bit and see.

You got root?

Sikiduck said:
You got root?
Click to expand...
Click to collapse
Yes, I do. I tried playing with the nv_data files, but I can't get the original IMEI to come back no matter what I do.

No EFS folder in F240K

I have rooted F240K. Previously i lost my IMEI and signals butt now i have repaired my IMEI but still no signals. and i also don't have EFS folder in root explorer.. after installing FREEGEE i backup my EFS folder and now there is a folder in sdcard by the name of EFS backups..snapshot attached.. but i want to know why there is no EFS folder in root of my phone..??? If it is sufficient that backup from freegee???

problem with twrp backup

I make backup with twrp but I can't find files on twrp file inside my storage I need to delete this backup how I can?

I think you should try the es file explorer in root mode and do a sd card analysis to find the backup. It should not be very hard to find the folder.

I try and still not fixed

It's on the internal storage inside the TWRP folder. If it's not there there are no backups.

Ehfida said:
I make backup with twrp but I can't find files on twrp file inside my storage I need to delete this backup how I can?
Click to expand...
Click to collapse
twrp backup folder directory stored in / data / media / 0 / TWRP / Backups / SerialNumber / here
use root explorer application ,
if no , determine if you ever get into recovery backups , select the restore .
If the backup was not there , it means you did not have his backup