Please look at what I posted... your FORScan changes could be affecting the update. The last line stays only the first one I posted gets changed. The last 2 of the last block will get recalculated if it's wrong.
And as I said to @Skier167 you as well as he will have to fail the update and go the CANBus route
Also, have you made any IPC FORScan changes and if so, which ones?
Don't forget the IPC has 2 updates, the first a USB and second the CAN Bus... configuration is done in the CAN Bus update... let's see if he replies to the IPMA first