Hello All. I have a modified BIN file and intend to upload it to ECU using the NEFMOTO program. My motor controller was already modified by the company and the file was NO READ, but it did not go through the Nefmoto program and it was able to edit TunerPro, he did not want to turn on Winols but after remove the NO READ tag winols open the file. After the edit I had a few checksum errors but using the tools from the forum I corrected them. I do not know if I'm doing it correctly but I would not want to immobilize the car. Did the driver not read completely or correctly through this NO READ tag, i don't see any errors? And when I  using the Memory Layout 29F800 and in the ECU is 29F800BL or 29F800BB it can not be write correctly? (no information on the internet and I am afraid to open the ECU to check)

I apologize for the language but I used part of the translator. Regards !

Some comercial files has modified cks, take caution when you find big number of wrong cks...check if only data was changed

stop using other people's files, problem solved.

Quite easy:
If you deleate the NOREAD tack in the dump with a normal hex-editor, afterwards the checksum will be wrong, because the CKS of the dump was done including the NOREAD tack..

Same when you change bits or maps in the dump the CKS needs to be corrected.

Only a few flashers and dump editors care about the NOREAD tack, so just take one of these an got on working with the dump, if you want to.

Depending on the way your CKS-calculator works, take care of starting with the orignial OEM dump and let the CKS of your chanced dump calculated in order to the original dump and not the tunes one

BS

Thanks for the detailed answers. The file has been corrected and correctly uploaded to the ECU . Thanks for the help. Regards