While flashing things with TWRP is fun and games, it can sometimes also lead to serious issues on your device. If proper care is not taken or if the installed TWRP recovery on your device has bugs/issues, then restoring a backup from it may corrupt your device, resulting in lost information and features.
Copy the APK file of the app to phone. Locate copied APK and install.5. When installed access from app drawer, open and give the root permissions. Select whether you want to backup or restore EFS. Select storage and the job will be done. Have you restored EFS in your Samsung Galaxy? Share your experience in the comment box below. App Manager is a customizable APK manager for Android: extract any installed app, mark them as favorite, share.apk files easily and much more. FEATURES. Extract installed & system apps and save them as APK. Organize your apps marking them as favorite.
Download IMEI(EFS) Tool N8 S8 Root 1.4 Android APK, IMEI Backup/Restore Tool Samsung galaxy Note8 and S8. Amazon EFS is natively integrated with AWS Backup. You can use the EFS console, API, and AWS Command Line Interface (AWS CLI) to enable automatic backups for your file system. This application let you save a backup of your EFS (IMEI) partition (if exists) on any device running Android 3+, this help you to keep your IMEI safe from getting corrupted after any bad Rom flashing issues, this is a common issue with Samsung devices, if somehow you lost your IMEI, you won't be able to get registered and connected to any mobile network.
Below is a list of issues that could occur when a TWRP restore goes wrong:
- No IMEI number
- Corrupted EFS
- No SIM, card not detected
- Unknown Baseband
- Issues with WiFi and Bluetooth
The major cause behind all these issues after restoring a TWRP backup is the EFS partition. The EFS partition sometimes fails to restore correctly and hence corrupts all other partitions as well.
Developer jcadduono has explained the issue in detail, so we’ll just go ahead quote him below:
The EFS restoration issue was due to a missing file name set bug during the backup restoration process.
This caused all subpartitions associated with a backup-enabled partition to have the first item (ex. the main/non-subpartition) restored to all subpartitions as well.
Efs Backup Tool Apk
See for example the partition entries in Angler’s recovery.fstab:
While creating the backup of EFS, you will end up with:
efs1.emmc.win (modemst1 partition raw data)
efs2.emmc.win (modemst2 partition raw data)
When restoring this EFS backup, what happened was the file name was not updated for restore, and you ended up with:
Restoring EFS…
Restoring efs1.emmc.win to modemst1
Restoring efs1.emmc.win to modemst2
It should have been:
Restoring EFS…
Restoring efs1.emmc.win to modemst1
Restoring efs2.emmc.win to modemst2
Losing your device’s IMEI and cellular functionality is pretty scary. But fret not! Fixing the issue is fairly simple. You just have to erase/reset the modemst1 partition and things will be good again.
You can fix the issue from TWRP recovery, over ADB from Android or via Bootloader mode using Fastboot commands. Below are detailed instructions for both:
How to Fix EFS from TWRP recovery
- Boot into TWRP recovery.
- From TWRP’s main screen, select Advanced » then Terminal.
- Type the following commands in terminal (one by one):
- Reboot device.
Efs Backup Apkpure
How to Fix EFS over ADB
- Setup ADB and Fastboot on your PC.
- Enable Developer options & USB debugging on your Android device.
- Connect your device to the PC and open a command window on the PC.
- Issue the following commands one by one:
Efs Partition Backup Apk
How to Fix EFS from Bootloader Mode using Fastboot commands
Efs Backup Android
- Setup ADB and Fastboot on your PC.
- Enable Developer options & USB debugging on your Android device.
- Connect your device to the PC and open a command window on the PC.
- Issue the following commands one by one:
That’s all. Hope the fixes shared above helps you resolve the issues.