While looking for help in recovering my XYAUTO 9212 head unit I came across this video in YOUTUBE (Spanish Language Video) and about half way the host showed a way to make the Head Unit boot from a USB flash drive (With the appropiate firmware loaded to it) by shorting to ground the 'KEY2" cable that resides in the unit power plug.and powering the unit and waiting a few seconds until the firmware started loading. I know there is a fix that uses the shorting method but...Read more