I've never flashed a PCM before and would like to know more about how to do it.  From what I understand is first you need to conect to the J2534 via USB and simply navigate to reprograming on the maxisys pro to the appropiate file and follow the on screan instructions carefully.  I've read somewhere that this only works for some of the GMs at the moment because the flash software for other manufacturs is not avalible on maxisys yet but will be later. I'd like to know if what I said above is currect and what I might be leaving out. Can the maxisys reflash while connected to internet via wi-fi or does it have to be connected via LAN?  And if it has to be connect via LAN,why?  If it downloads the reflash file first before install and the download didn't complete correctly would the reflash stop??

Thanks for the reply ede65, and information. Do you have any guess as to how long
before maxisys will have access to other manufacturers flash files?