Well I've had my MX-850 for several years now and have modified it with no problem up until today. Now out of the blue I'm getting this error. What makes it far worse is that no matter what I do I can't even get it back to a usable state!! Any advice for at least getting it to work again would be appreciated - I spent too much time effort and money on this thing to have it brick now...

I'm assuming that URC never even got to the bottom of this issue, did they????