Hello, I've got a fowarder with a 6068 HF 485, it's showing an SPN 629 FMI 13 Code. This code is for a Boot Block Error, the ECU detects an internal memory problem. Any John Deere guys out there know anything about this code? As far as I can see the first step is to download a new payload for this machine, but that's not something I have access to, I'd love to know of any other steps I can take.