That is correct for the Xoro RM001 / RM002 models. If you have the new RM003 there is no recovery and you will not be able to use this method.
Also, be aware of the fact that there is a bug in the original firmware that corrupts the flash memory. It might take a while and hit unused or unimportant spots, but it also could hit in an important spot and trash the device.

Hallo,

wie genau lade ich die originale Firmware auf mein Xoro? Wäre das die Vorgehensweise?

- Original-Firmware von www.xoro.de herunterladen, entpacken und die Datei auf eine SD-Card kopieren

- Dann die SD-Card in mein Xoro stecken und beide runden Knöpfe auf der Oberseite gedrückt halten. Schaltet das Radio dann ein?

- Die originale Firmware installiert sich nun von selbst und ich habe die alte Software auf dem Radio?

Bitte korrigiert mich, wenn das nicht die Vorgehensweise ist und ich anders vorgehen muss. Bin für Tipps dankbar, denn ich werde mein Xoro zurücksetzen (müssen).

Viele Grüße

Maoam

Thats a new model for them.
You should contact MAS Electronic and ask them for recovery files or a firmware file. Either directly (I can put them online here) or placed on their website.
Based on that I can make the needed modifications.

BR,
William

Hallo, 

Mounty

It is certainly possible to return to the original firmware if your Xoro is one of the ones that has one file for the firmware, which goes on an SD card. However, I think there are 3 versions, and 2 have the firmware in two parts. One part goes on the SD card, the other to internal memory. I am not sure it is possible to go back with these two-parters. Maybe William will advise.

If yours is the one parter, you put the "emergency boot" file on the SD card along with the firmware, reboot the machine, and then follow firmware update. The file is fs_fwrec    which can be any file with that name, but with no extension.

Cheers

You can find it here:

http://www.xoro.de/downloads/home-media-player/downloads-fur-xoro-hmt-350/