Hi, long story short but ineed some help. I tried to read Bmw 730d f01 2009 with New genius but it couldn’t read, so i tried with PCM flasher in bench and it read flash and eprom with out any problems so i sent flash file to my provider for stage1 and dpf, egr, flaps off solution. File comeback but i was advised that it was already modified before and then i tried to write it pcm told that checksum is incorrect it started writing and said writing with errors and now i can’t even connect to ecu it’s completely dead. Part number is 0281014727. Is where anything i can do? Also interesting what happened? Could it be something wrong with modified file? I also bought another ecu from eBay still waiting to arrive with part number 0281016728 (hopefully it is compatible). Is it enough try to write original files to it? And if its not to much can anyone check files and tel me if they correct. thanks for help