Kind gurus of fascinate forum, I would greatly appreciate if you could write a walkthough on how to backup and restore EFS. I heard it involves dd command. Please, step by step instructions.
Thank you!
i followed this:
http://forum.xda-developers.com/showthread.php?t=859914
Related
To make a long story short, I have a Samsung S3 I9300 (International Version). I installed an AOKP-based ROM through CWM 6, it flashed successfully the second time around (was very laggy first time). Anyhow, I didnt get any mobile signal and found out my baseband, imei and meid were all unknown, After tinkering for hours, reverting to stock ROMS, etc. I accidently managed to format my EFS folder, thinking it would repair the problem since i have a backup. Thus.. now i cant boot up the phone. Stuck at samsung logo. I can get into revovery and download mode. And I HAVE a backup .tar and .img file on my INTERNAL memory (ya i know that sucks ) SO could my phone be repaired anyhow. Could its efs be brought back and restored?
Thanks in advance
Some more details
Stumbling through the forums, i found this thread http://forum.xda-developers.com/showthread.php?t=2087567&highlight=efs+file&page=2
The last post does mention a solution, however, my efs backup is located on the INTERNAL memory. Any idea how i could possibly access and recover and copy that to my pc?
boot into recovery and pull the files with adb
Thanks for the reply Glebun
But could you be more specific with your proposed solution? Im a noob i admit, and i'd really like to get my self out of this situation!
I boot into recovery.. i have cwm recovery 6.0.2.7
Now what is adb? Could you link me to the program and how exactly do i run it? and connect it? note that my phone cant even go past the boot screen
You need to learn to google.
Searching for "pull files with android adb" should get you started
Alright managed to do some googling as you mentioned and got as far as the point of connecting adb successfully to my device.. Just help me in one last step and ill be greatful. I've tried for hours but i cant seem to pull files from my device? I've tried 'adb pull /' 'adb pull /sdcard' 'adb pull /sdcard0' amd many more, but they return with '0 files found 0 skipped'
What to do?
i have atleast 8gb of data in my internal memory
The path is incorrect.
Type "adb shell", then "ls" for the list of all files and folders in the current directory. "cd %foldername%" to move to a folder
Thank you so much
I managed to recover the efs files successfully
I just need to restore them back to my phone without any hassle, and everything will be perfect!
I have 2 files now.
One is "efs.backup.tar.gz"
Second is "efsdev-mmcblk0p3.img.gz"
Suggest me a way to get these back onto my phone
https://www.google.com/search?q=efs.backup.tar.gz
first link. You haven't learned to search
Glebun I would really need some detailed help with this.
The internet and forums seem to be full of ways to backup the efs folder.
However no specific way to restore it back
I followed the first link and the fourth post gave me instructions to type this:
"gzip -d efsdev-mmcblk0p1.img.gz
cat efsdev-mmcblk0p1.img > /dev/block/mmcblk0p1"
I also typed
"gzip -d efsdev-mmcblk0p3.img.gz
cat efsdev-mmcblk0p1.img > /dev/block/mmcblk0p3"
but to no avail.
Then I proceeded to install efs proffesional in order to restore my efs backup but it crashes everytime the device is connected.
Could you please guide me through adb or through an application to help restore my efs back in place?
Sorry for any trouble
put the backup file on the internal storage and make sure you type in the correct path. read the whole instructions
I couldnt find an answer to this question and so i am asking the community for a bit of assistance, i have a tablet and it has a recovery image however when i put it through cwm online builder it fails so i have a few things i am asking.
1. is there anyway i can edit the recovery image to include nandroid backup and restore with ability to flash .zips
2. if so is there anyway i could receive assistance in doing so or a fairly simple to follow text guide
Code:
db.tt/T76uFwsB
Its 16 megs too large for the attatchments i belive so i uploaded it to dropbox.
Thank You for taking the time to read this and think about it.
Dear Friends,
Need help please. I have installed another custom rom that was not meant for I9300 and now the EFS is corrupted. I tried installing orignal rom using ODIN but geting boot loop and the phone is not booting. On going into recovery i can see an error efs/ corupted or something like that. I have the backup of my EFS folder in tar.gz format however dont know how to install the same and recover my phone as not able to boot to android.
Please help me if someone can work it out. My phone has just 3 days of warranty left and it does not shows rooted anywhere except the count of installation is about 32 and rom says official and kernel says custom.
Please if someone can help me restore my phone back in working condition i shall always remain thankfull.
Regards,
Mush
mush2004 said:
Dear Friends,
Need help please. I have installed another custom rom that was not meant for I9300 and now the EFS is corrupted. I tried installing orignal rom using ODIN but geting boot loop and the phone is not booting. On going into recovery i can see an error efs/ corupted or something like that. I have the backup of my EFS folder in tar.gz format however dont know how to install the same and recover my phone as not able to boot to android.
Please help me if someone can work it out. My phone has just 3 days of warranty left and it does not shows rooted anywhere except the count of installation is about 32 and rom says official and kernel says custom.
Please if someone can help me restore my phone back in working condition i shall always remain thankfull.
Regards,
Mush
Click to expand...
Click to collapse
It is essential that you have a backup of the EFS partition and a way to place it back - the first two ways that I would think about are:
a) use a good recovery - like Philz recovery, that has commands to restore EFS
b) if the format of the backup is not exactly right you might be able to boot in recovery and use ADB commands.
xclub_101 said:
It is essential that you have a backup of the EFS partition and a way to place it back - the first two ways that I would think about are:
a) use a good recovery - like Philz recovery, that has commands to restore EFS
b) if the format of the backup is not exactly right you might be able to boot in recovery and use ADB commands.
Click to expand...
Click to collapse
Code:
su
umount /efs
dd if=/sdcard/efs.img of=/dev/block/mmcblk0p1 bs=4096
reboot
Ver3go said:
Code:
su
umount /efs
dd if=/sdcard/efs.img of=/dev/block/mmcblk0p1 bs=4096
reboot
Click to expand...
Click to collapse
I am new to adb commands. Will phylz recovery help me enter the commands? if yes then i shall be replying with the sd card efs tar file name. Will then you be able to guide me with the commands based on the tar file?
Thanks all of you in advance.
Mush
mush2004 said:
I am new to adb commands. Will phylz recovery help me enter the commands? if yes then i shall be replying with the sd card efs tar file name. Will then you be able to guide me with the commands based on the tar file?
Thanks all of you in advance.
Mush
Click to expand...
Click to collapse
No for ADB you boot into recovery, connect your computer via USB and run the ADB commands from either Linux Terminal or Windows Command Prompt.
The tool here:
http://forum.xda-developers.com/showthread.php?t=1703488
May help if you're new to adb.
Otherwise it's a case of downloading and installing the drivers for your phone and the Android SDK http://developer.android.com/sdk/index.html
Thanks for all your replies.
Just wanted to confirm if i have the efs backup in sd card as under folder backup_efs and there are two files in tar.gz format will i be able to use the phylz recovery to use this replace my efs folder? if yes then can you guide me the steps please.
Regards,
Mush
mush2004 said:
Thanks for all your replies.
Just wanted to confirm if i have the efs backup in sd card as under folder backup_efs and there are two files in tar.gz format will i be able to use the phylz recovery to use this replace my efs folder? if yes then can you guide me the steps please.
Regards,
Mush
Click to expand...
Click to collapse
I do not remember right now what creates an backup_efs folder but it really does not matter that much - the tar.gz is a "file archive" and .img is usually a partition image. Each could have minor advantages - the .img also contains the entire filesystem of the partition (and will work easier if the filesystem is bonked) but a tar.gz backup is more versatile when you have bad sectors or a changed partition.
Under an advanced recovery like Philz you would just navigate some menus and try to restore the EFS - see the info in those specific threads.
Under ADB you need to have stuff (drivers and some programs) installed in your PC, you connect the phone on USB and you run ADB commands from the command line.
Hi all,
I've made a huge mistake formatting /dev/block/mmcblk0p1 as the title says.
I'm asking you to do a copy of it and post it everywhere you can
Not sure what it is about but my radio doesn't work anymore, and the phone can't read the SIM card.
If you have root and terminal access on a D605 i'd love to have this partition :fingers-crossed:
I've already tried restoring a CWM backup but it doesn't work anyway :crying:
You may back it up simply with
Code:
dd if=/dev/block/mmcblk0p1 of=/storage/sdcard0/backup.img
Thank you very much in advance.
Have a great day,
Matias
Hi. Here you are.
https://mega.nz/#!1IBhAD5a!dG-rBASU-H4CVVa95sGrqsM1n5lj7gO24S_kny0oxQo
After qfil unbrick, I have sim without signal and imei. Hope someone dump me A qcn from his rooted phone. It can be done in QPST. Thanks.
Or twrp backup efs partion.
Hi!
I have the resources, you need, I think... I own a rooted Lex722.
But I cant understand, what you mean with "qcn".
Pls describe me exactly what it is and how I may extract those data for you. Also, I need an address, where to send it to.
Regards
A7er said:
Hi!
I have the resources, you need, I think... I own a rooted Lex722.
But I cant understand, what you mean with "qcn".
Pls describe me exactly what it is and how I may extract those data for you. Also, I need an address, where to send it to.
Regards
Click to expand...
Click to collapse
Thanks for your responce. The qcn i mean is the .qcn file backup through QPST. It contains all the baseband related information for making a call.
I have baseband and imei, but signal.
SIM is recorgnized. It is great if you can backup a .qcn file from your phone.
A backup efs through twrp will also do.
My email: [email protected]
Thanks,