Hello, i am trying to read (dump) MC9S12H128 using usbdm memory dump program, is this correct way to do this? 
Hello @Janseet,
USBDM is not an NXP product, and we do not have any official support materials for this tool.
However, it has been discussed on the community several times:
https://community.nxp.com/t5/OSBDM-and-TBDML/Copying-mc9s12-flash-memory-with-usbdm/m-p/2010441
https://community.nxp.com/t5/OSBDM-and-TBDML/usbdm-problem-page-whit-mc9s12dp512/m-p/1783772
Regards,
Daniel