problem with eurovox max blue box?

I attapted to download latest firmware for my eurovox max, I wasn't sure at the time wether it was a red or blue box, I attepted the red download but it stated that this firmware was not compatable, so i downloaded the blue firmware dated 30-11-08. Originally all seemed well, all channels working, then tv picture froze, with the front display on box showing C242. I tried to download again but still showing same on display. It now looks like that there is no connection between box and tv as there is no picture what so ever. what does the C242 mean and how do I fix the problem. Regards Chalkie