gngng tried the wiiesc hex file from Falco on a F-40A
esc didnt say anything on powerup, but capacitors got hot -.-
flashed it back to simonk bs_nfet.hex .... hooked it up to the motor ... BANG
Dang! The F-40A is a bs.hex type ESC, not a bs_nfet.hex type, so it makes sense (unfortunately) that it did not work.
...and Tom Sn0w's RapidESC Database, which helps you look up which firmware variation should work on your particular ESC.
I'll edit the 'instructions' and try to make that more clear. Totally missed that you were looking to use my posted file (but it is more than interesting that it was the SimonK bs_nfet.hex actually blew the FETs... that may well be a useful clue; why the difference?).
So you need a bs.hex file for the F-40A. You could compile your own file for that (like Berkley did) or I can send you one. Did you have a spare ESC?
A visual cue that it might not be an all n-FET ESC is the fact that the FETs were in two sets of symmetrical rows, and if you could manage to read the lettering on them you'd see that there are two types of FETs.