Edc17C74 writing via obd with kess v2 tested?

[arejas]

Hi,i opened ecu,took mcu read 4mb file,moded it and wrote back via bootmode with ktag 7.020,but checksum was made bad by ktag 2.23,can i write that moded mcu file via obd with kess v2 fw 5.017 2.47sw? Do i need unlock ecu or convert frf to bin or something else?

[morgano]

Try using ksuite 2.22 or 2.25 with your ktag. 2.23 suffer many checksum problems.

[arejas]

with ksuite 2.25 for ktag write successful via bootmode,but car won’t start,what about writing mcu file via obd with kess 5.017 and 2.47sw?
Edit: If you have bootmode read of mcu you can write successful via obd.

[bigbang63]

with ksuite 2.25 for ktag write successful via bootmode,but car won’t start,what about writing mcu file via obd with kess 5.017 and 2.47sw?
Edit: If you have bootmode read of mcu you can write successful via obd.

After your car won't start , you choose to write by obd the file your read by boot mod? and the car starts?
thanks