EDC17CP54 Ktag

[cosmynnec]

Hello,
I wrote a file to this ECU , ECD17CP54 , Audi A7 3.0 tdi. I think the file had bad chks and the car won't start. I can connect to the ecu with diagnostic software , no DTCs in ecu but there are error in other modules , no comunication with ECU .
I tried to write the original file back , but Ktag can't connect to the ecu anymore , it says "Identifying ECU ..." and the an error " Can't connect to the ECU ... " .

Any ideas how this problem can be solved?

Thanks

[jurebv]

post file you read and file you wrote

[cosmynnec]

Here are the original and modified files.

My problem is I can't connect to the ECU with Ktag to write any file.

[figani]

Here are the original and modified files.

My problem is I can't connect to the ECU with Ktag to write any file.

you try only service mode or also boot...?

[cosmynnec]

I only tried boot mode with ktag protocol P739. Is there any other method with ktag?

[kospoz]

Original ktag?

[jurebv]

obviously not since he would use bench mode not boot mode, get someone with original tool and boot it...i once wrote wrong file to this exact ecu in bench mode with flex and lost all communication but restored it in boot...anyway get someone with real tool and boot it (altough theres a chance ktag killed it)

[vladimir88]

use ktm bench is 100% ok read and not open ecu

[jurebv]

Its not the same ecu this is edc17cP54 not edc17c54