Long ago I developed an application with the ColdFire MCF51JM128 and the USB Bootloader (AN3748) on Code Warrior 6.1.
Now to update my application I used Code Warrior 10.4 always with the same bootloader.
The problem is that if I upgrade by connecting the PC usb to a card with the old firmware, upgrade is ok, but the ColdFire starts and goes reset, and so on.
If instead I program the MCU with the new FW through the Cyclone Pro and then I try to upgrade via PC, the MCU will run correctly.
You can help me ?