I was playing around with bgmr I found my device has the following transports, does anyone know what the com.google.android.gms/.backup.migrate.service.D2dTransport is for, I could not find much documentation about this.
$ adb shell bmgr list transports
android/com.android.internal.backup.LocalTransport => destination will be private somewhere in /cache not directly accessible for developers debugging purposes
* com.google.android.gms/.backup.migrate.service.D2dTransport => ???????????????
com.google.android.gms/.backup.BackupTransportService => Standard backup to google drive
I selected the D2dTransport one and tried to do a full backup and it did something.
It even lists restore sets
adb shell bmgr list sets
<hexnumber> : D2D Restore Set
Now my question is where is this backup stored? And second question how to delete that restore set