Hondata

So I uploaded the 1.3.5.4 program and as soon as i did that the car wouldnt start. But i had the old one and its ran like normal. Any reason why it would do that? And how do i get my old program back?

thanks in advance

Clear security, close the program, reopen it and then load the calibration and upload it again.

I have the same problem except when I uploaded the initial calibration I forgot to turn off the engine and during the upload the engine shut off. I went through and tried using my other laptop with the previous version of Kmanager and the calibration file (which started the motor and ran fine before I did anything) but still didn't start. I also tried doing what you suggested and clear security, close out of program, re open program and upload new calibration file but still doesn't start. Any ideas to what I should do or what the problem may be?

Is the immobilizer enabled or disabled?