[jbangert]

Change your mechanic. The cheap (elm327) dongles can't write firmware onto ecus in any setup I am aware of -- elm327 is its own protocol and only supports the obd 2 standard operations (and those poorly). Of course a bad dongle could do something electrical to your ecu, but a reflash would never be necessary. Usually, when your car doesn't start well after a discharge, just remove the source of the drain ( i.e. Don't leave the Doyle plugged in) and go for a nice 30 minute drive -- most likely the battery will be fully recharged.

[RealityVoid]

Why can't they reflash firmware tho? If it give you access to the CAN bus, you should be able to output whatever the heck you want. No?