I've had an MC-200 languishing in the closet for quite some time. I had given it to my son and it worked for a while and then would not power up properly (the standyby light came on, but it would not go into run mode). Just yesterday I replaced the caps C18 and C19 as many have pointed out as being a problem in many instances. Success, the unit booted up into run and looked normal however the software was .31 (very old). Instead of leaving 'good enough' alone, I tried to update the software, being very careful to follow the letter of the instructions. I successfully loaded the DPS2, DPS1, and the OSD files, but the UMC2 file failed. Couldn't get it to load. Now the unit is in continuous loading cycle. I called Emo, but none there on Saturday. Does anyone know how I can recover? Thanks.