No, no changes on the SD card, no new files. That's why I wrote that nothing happens after the loader is run. In fact on earlier FW versions there was a system error message in one of the files on the internal file system, which most probably means that the loader is stuck in an infinite loop. However on the newer FW versions (currently 3.10) I can see no such error log. I suspect it's just a FW bug that the rrgn (and probably other) command doesn't work, but somebedy would have to confirm it on his unit.