My first two v1's went up in smoke, but my 3rd v1 is going strong with the original firm ware. I just cut the top of the case off and run with no fan. Works great. Temps typically about 150 - 170 after a 10 or 15 minute main.

I run 5s with a Neu 1512 3d or 1515 2.5d depending on how I feel that day.