@Lost_N_BIOS ,
The “fparts.txt” file does contain the both 5F and 3F model ! So, FPT detection is suspect or ‘buggy’.
Yes, I have looked myself the chip with a loupe for zooming the inscription , it is well a 3F model .
FPT tool does report ID:0xC22018
The BIOS chip is soldered on the mb, so I can’t manipulate it. I can only access to it via the SOIC8 clip and I have double check the green adaptater is well positionned on the CH2341A Pro USB key on the proper 25xx side in respect of the correct pinouts.
I’ll do the ASProgrammer procedure test and let you know the results.