thank you for your reply, but when person gave me the a2l file and .hex file, hex file is like 0.3mb and my original file is 1mb, a2l does not work with my ori file, and for sure i cant upload the modified hex to my car, it sounds like really bad idea. so the question is ok, person gave me a2l and hex, and he sayd that its damos for my car, if i edit the hex, for sure i cant whrite it? but then how do i edit my original file when a2l doesnt fit my file, or its not even suposed to. its kind of question im not the only one that has it, but just cant wrap my head around how to explain problem im having, thats the reason people were being made fun of in other forums for this kind of question, but i hope someone would help me haha, its just simple question holding me back.

regards