immobilizer issues after Kpro upgrade

[bacchus418]

Hello,

So I had my Kpro upgraded last week from v1 to v4 and I now have it installed in the vehicle. Prior to the upgrade, my immmobilizer never gave me any problems. After installing the v1 Kpro, I had my immobilizer paired correctly and enabled. It worked fine for many years until I had the upgrade done. Today the immobilizer no longer works. My understanding was the new v4 Kpro should not have affected my immobilizer. Why would it suddenly start having problems? What can I do to solve this issue and re-enable my immobilizer?

Thanks for any advice!

[Hondata]

Have you uploaded your calibration to the ECU again?

[bacchus418]

Yes, I did but the immobilizer issue persisted.

Here's the timeline:

disconnected battery
installed new v4 Kpro
reconnected battery
connected Kmanager to Kpro via USB
failed to start vehicle due to immobilizer
reflashed Kpro with same current configuration
failed to start vehicle due to immobilizer
reflashed Kpro with same configuration except disabled immobilizer
car started with green key immobilizer light blinking
reflashed Kpro with same configuration but re-enabled immobilizer
failed to start vehicle due to immobilizer

Ultimately once I did this a few times; reflashing and toggling the immobilizer, it eventually sorted itself out. The immobilizer is now enabled and the car runs. Not sure what that was all about....

[Spunkster]

You just needed to turn the key off after uploading with the immobilizer enabled.