this is cause we also need a stick like psjailbreak for debug/test units. i tried playing backups with the backup manager 1.1 on my test unit -> IT DOESN'T WORK. also if i replace the original EBOOT.BIN with the debug EBOOT.BIN.
i am on 3.20 and also my psgroove dongle doesn't work. hopefully the stick works on 3.40 or 3.41 fw.