i got a backup.ab file with password. I'am looking for how to open it for 1 month but i still couldnt open it. I really need help can anyone tell me how can i open it please explain it with step-step

  • Why have you tagged your question twrp? backup.ab files are created by the command adb backup which works in regular OS, not in TWRP.
    – Robert
    Jun 1 at 12:19
  • actually, TWRP can create backup.ab files. but the format is completely different. twab.sh can convert into .win
    – alecxs
    Jun 1 at 20:19
  • @alecxs A bad choice to use the same file extension as adb backup but using a different format. But are those backups also password encrypted?
    – Robert
    Jun 2 at 6:34
  • @KaanAyhanoğulları Please edit your question and add more details how the backup had been created. It would also be helpful if you could open the backup.ab file in an edit and post the first may be 10 bytes of the file so that we can determine what type of backup it is.
    – Robert
    Jun 2 at 6:38
  • @Robert whatever TWRP creates is wrapped into backup.ab, so I assume depending on TWRP settings encrypted backup might possible (untested)
    – alecxs
    Jun 2 at 7:23

1 Answer 1


backup.ab files are usually created by the command adb backup. This answer is only for backup files that has been created by adb backup. It will not work for other backup types.

Extracting an Android adb Backup file is pretty simple. You just need Android Backup Extractor, a Java program that does everything for you.

Just download the latest abe.jar release. As it is Java based you also need a Java Runtime. Oracle Java is no longer free in all usage scenarios, therefore I recommend OpenJDK from Eclipse foundation. But any other Java 11 or 17 JRE or JDK is also fine (abe requires Java 11+).

To convert your Android Backup file backup.ab to a tar execute

java -jar abe.jar unpack backup.ab

It will create a file backup.tar which you can open using an ZIP tool of your choice (e.g. 7-Zip).

  • İ am going to try man thanks Jun 1 at 13:51
  • Hi i tried but i got this message : ''Unable to access jarfile abe.jar'' Is it because i put a password when i was backing up? Jun 1 at 20:49
  • @KaanAyhanoğulları abe.jar is the program for reading the backup not the backup itself. Have you downloaded abe.jar as described in my answer? And then open up a command prompt or terminal how it is called in your os in the directory where you have downloaded abe.jar into and execute the command to run abe.jar with Java.
    – Robert
    Jun 1 at 21:16
  • Yes i have downloaded abe.jar but when i try to open i get that error message : ''a java exception has occurred'' Jun 1 at 21:42
  • @KaanAyhanoğulları The downloaded abe.jar works fine. If it doesn't work on your system then something is wrong with your installed Java version or the backup file is defect or in a wrong format. BTW: You still have not answered by comment on TWRP tag.
    – Robert
    Jun 2 at 6:32

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .