Yesterday I flashed 2 E35Bs, both flashed in a truck that has had successful flashes recently since the other truck is experiencing Canbus issues. Both Ecms flashed successfully, both were just receiving minor table changes. Now neither ecm will allow the truck to crank due to theft deterrent communication issues. Neither ECM is automatically discoverable with EFI Live, but they will take a flash and I can log them with the Tech2. Security Light has stayed off, I tried flashing with VATS off, tried flashing their stock files, tried updating EFILive and my firmware, all to no avail. Both ECMs run versions of the 8594 OS. I also just flashed a couple E35As the previous day with no issues using the same older version and v2 as I started these trucks with. Anyone experience anything like this?

Thanks,
Tim