I am working on a project that uses the MCF51JM128. I am trying to make the USB bootloader (AN3748) to work on the MCF51JM128. Following the examples given in the application notes, I implement the USB bootloader into my firmware and can JTAG the firmware in. The board is tested to be working correctly and able to be detected as Freescal JM128 bootloader when in USB bootloader mode. However, after flashing in the firmware (S19 format), the board does not work. The firmware is modified from the one provided with the JM Badge Demo Board.
Really appreciate any help and advice. Thanks