I hadnt updated EFI in quite a while... I recently regears my Bus with an A41 J1939 TCM so I needed to adjust the calibration a bit..

while at the bus barn I ran a calibration read and programmed my TCM normally.. drove home and whiole at home the dashboard tablet had connected to the internet and kept nagging me aboit updates.. so i let it.. it updated from version ??? to the latest (V8) and updated my flashcan V2...

now I cvan read in the calibration from my TCM.. however when trying to flash the calibration I get a "no data received" error.. I never had this before..

is there a way to go back? what can I do to fix this.. I have a mess on my hands at this point..

the no data received is wierd because I can connect and read in the TCM with zero issues... just cant program it.

I do have a flashcan V3 but somehow lost the OBD-2 cable to it so im waiting on a new cable.. ive never actually used it to flash a tCM.. I got it a while back and never used it as the V2 has always worked...