I also have a f5s box that has now been driving me crazy for a few days, it has a dim 8 on the display but when plugged in to serial to serial connection it seems to struggle on the synchronizing please reset target, and when it does come up with the done message it comes up with set stb memory error, do the files that reaper has posted above work all the time or is the box just a nice desk ornament now, I welcome any suggestions, thanks