Where in the phone filesystem are settings saved? I've lost my ADB backup password and simply want to delete it. If it affects other settings that won't matter too much.
I will be interfacing the filesystem through a root shell.
In my stock Android 4.2.1 the file responsible for holding Desktop backup password seems to be
I took a backup of it, renamed it, restarted the device, and the password was reset to empty. Now I could create a new password from the Settings easily.
In CM12, I had to rename two files, namely
pwversion, and everything went well after a reboot.
Note: I noticed file modification in
/data/<FOLDERS> to proceed and ultimately reach my conclusion, which of course works here.
This worked for me on Moto X Play (6.0.1), stock ROM, unrooted and may be of use to others
I wanted to remove the password set earlier for a different reason
In USB configuration, I entered the previous password, in Enter your current full backup password and left blank in both Enter a new password for full backup here and Re-enter your new full backup password here and clicked on Set Backup Password and it accepted it meaning that I didn't have a backup password now !
I verified this running Helium chrome extension which requires backup password to be blank and it worked