I just had a problem very similar to this one. I tried to create and restore a Backup with TWRP 3.4.0, but restoring always failed at 94% with this message:
extractTarFork() process ended with ERROR: 255
And in the logfile I found this:
tar_extract_file(): failed to extract //data/app/[...]/base.apk !!! I:Unable to extract tar archive '/external_sd/TWRP/BACKUPS/[...]/data.ext4.win005' Error during restore process. I:Error extracting '/external_sd/TWRP/BACKUPS/[...]/data.ext4.win005' in thread ID 0 I:Error extracting split archive. Error during restore process. extractTarFork() process ended with ERROR: 255
As I did not find a solution online, but many others facing similar problems, I just want to share how I solved this.
- Save TWRP Backup to external SD
- Backup (e. g. via MTP) internal storage (i. e. /data/media/0)
- TRWP -> Wipe -> Advanced Wipe -> Check everything except Micro SD card
- Restore TWRP Backup
- Restore internal storage (e. g. via MTP)
I’m not sure why wiping the internal storage solved the problem, but I guess that the restore procedure somehow ran out of storage. I hope this will help others facing this problem.