Hi @Lync123
I think your question is already answered in this community post, but I live you also here the information.
In case of MPC5xxx devices, it's proprietary SW from Pemicro. All the resources can be found on their web page:
https://www.pemicro.com/opensda/
Here is the link to firmware package:
http://www.pemicro.com/downloads/download_file.cfm?download_id=378
In case of any issues:
https://www.pemicro.com/support/index.cfm
From <https://community.nxp.com/t5/MPC5xxx/OpenSDA-firmware-for-DEVKIT-MPC5744P/td-p/1325357>