Hi, all.
I'm connected xprog-m 5.5.5 to BMW MRS v2.5 incircuit without external power and tryied read MCU from MRS and then I see white smoke from xprog-m 5.5.5. I saw that R56 on B3 and B5 line was very hot, LT1172 died. I replaced resistors R56 and diode 5.6V, also desoldered LT1172 add external power 15V and now I see ft232 recognized, but in xprog software I always see "Communication error", even if I try get hardware info in About menu. I'm tried replace both lm317, irf7316 to irf7314, but looks good. I see, that irf7316 not opened, because no signal from Atmega. I also changed atmega, and flash 5.5.5 software with fuses and lock bit, also no luck. Anyone can help? How check if lattice live or died? btw, 15V from external power, 5V from LM2940 and 3.3V from LM3940 present.