For some reason, I am unable to run beta v20 1 or 2. I tried with 3 different sd cards (sandisk and transcend brand), which all work with OSv16, with either 4Kb or 32kB FAT32 format, and I get stuck at " OS init...4 " or " OS init...3 " or " OS init... 1 " and sometimes " io error 62 ". I have tried this on 3 different systems also: original US frontloader, hidef nes toploader and nesrgb frontloader, all with same results. I have not once gotten to the file manager screen. Am I the only one?