![]() ![]() Connect the device to the PC and open a command window on the PC.After installing adb and heimdall on the pc, this is what was done on the phone: Enter download mode heimdall flash -RECOVERY twrp-3.2.3-0-hero2lte. Enable development options and USB debugging on your Android device. Install I followed the adb guide and the install guide (only up to and including the twrp install LineageOS was not installed).Type the following commands in the terminal (one by one): dd if = / dev / zero of = / dev / block / bootdevice / by-name / modemst1ĭd if = / dev / zero of = / dev / block / bootdevice / by-name / modemst2.From the TWRP main screen, select Advanced Then Terminal.Instructions for both are detailed below:Ĭontents hideHow to Fix EFS from TWRP recoveryHow to Fix EFS over ADBHow to Fix EFS from Bootloader Mode using Fastboot commands How to fix EFS from TWRP recovery You can fix the problem from TWRP recovery, via ADB from Android, or via Bootloader mode using Fastboot commands. But do not worry! Fixing the problem is pretty straightforward, you just need to erase / reset the partition modemst1 and things will be fine again. Losing the IMEI and cellular functionality of your device is quite scary. When restoring this EFS backup, what happened was that the file name was not updated for the restore, and you ended up with: ![]() When creating the EFS backup you will end up with:Į (raw data from partition modemst1)Į (raw data from partition modemst2) efs1 emmc /dev/block/platform/soc.0/f9824900.sdhci/by-name/modemst1 flags = backup = 1 display = EFS / efs2 emmc /dev/block/platform/soc.0/f9824900.sdhci/ by-name / modemst2 flags = backup = 1 subpartitionof = / efs1 See for example the partition entries in Angler $ 0027s recovery.fstab: This caused all the subpartitions associated with a backup-enabled partition to restore the first item (for example, the main / non-subpartition partition) to all the subpartitions as well. The EFS restore issue was caused by a missing file name set error during the backup restore process. EFS partition sometimes fails to restore properly and thus corrupts all other partitions as well.ĭeveloper jcadduono has explained the problem in detail, so let’s quote it below: The main cause behind all these problems after restoring a TWRP backup is the EFS partition. If proper care is not taken or if the TWRP recovery installed on your device has errors or problems, restoring a backup from it may corrupt your device, resulting in loss of information and features.īelow is a list of problems that can occur when a TWRP restore fails: How to Fix EFS from Bootloader Mode Using Quick Start CommandsĪlthough flashing things with TWRP is fun and fun, sometimes it can also lead to serious problems on your device. ![]()
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