checksum failure

[JWBFX4]

Originally Posted by TA2Dsailor

Plugged it in straight out of the box. I'll try to update it and try it again.

turned key on set it to 93 performance key off key on started to load. check sum failure tried to start and nothing message poped up on odometer CHECK GUAGES

I pm'd Jack and Bill already. Just wanted to see if anyone else had this problem and knew how to fix it.

Anthony

Well it should be updated if you just bought this...unless it was used. Because I am pretty sure they said they update them with the latest firmware before shipping out.

Now to the part in bold....did you make sure to turn your key to the on position(without truck running) before you plugged the gryphon up to the cable?...And I found that the check gauges happens everytime I go to program my truck especially if it has done been cranked...something about the programming overiding the sensors at the time?? I think that was the explanation.