Hi,
to solve the problem, we need to know:
1. your Codewarrior version
2. your board is NXP demo board or self designed board?
3. all the error message screenshots
meanwhile, please try this:
If you can not load any SW into the MCU it is more probable that the MCU is secured.
Sometimes when you change the MCU on the BDM it can happen that MCU get secure (depends on internal MCU memory configuration and the last debugger configuration). here is how to unsecure the MCU:
use external unsecure SW – can be downloaded from www.pemicro.com. (You have to create your own account to get access to Unsecure_12 (5699 KB)): Utility which unsecures HCS12 devices via P&E's BDM Interfaces such as Cyclone-PRO, USB-ML-12, and BDM-Multilink. http://www.pemicro.com/support/download_processor.cfm
Unsecure_12 Help Files: This .hlp file describes the use and operationg of the Unsecure_12 program which is used with P&E's interface devices to unsecure proeviously secured HCS12 microcontrollers.
Have a great day,
Jennie Zhang
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