Python script to migrate from FreeOTP to FreeOTP+

You need retrieve FreeOTP ADB backup by yourself.

Become developer on your phone

1. Android -> Settings -> System -> About -> Build number (tap,tap,tap) to get android developer mode
2. In "Developer options" allow "USB debugging"
3. Connect phone to PC

ADB backup (case for FreeOTP)

1. install adb package
2. run adb backup -f freeotp-backup.ab -apk org.fedorahosted.freeotp
3. will be asked for password so entry some

In case encrypted phone

1. download https://github.com/nelenkov/android-backup-extractor/releases
2. run java -jar abe-all.jar unpack freeotp-backup.ab freeotp.tar <password> to extract backup
3. run tar xvf freeotp.tar
4. tokens are in apps/org.fedorahosted.freeotp/sp/tokens.xml
5. run this script in same folder as 'tokens.xml' or specify file by '-i' argument

Do import and export in same time frame as OTP counter can get raised and your newly generated tokens won't work. In my case two day old export from FreeOTP didn't work. When I did export then import within hour everything went ok.