Hi Ferty Lai
Unfortunately, there isn't an RBF bootloader file for the S32K148 device. You can find the S32K144.rbf if you installed the RAppIDBL:
RAppID Initialization for Power Architecture | NXP
Another option for bootloader for the S32K are the AN12218 and the AN12323 application notes:
https://www.nxp.com/docs/en/application-note/AN12218.pdf
https://www.nxp.com/docs/en/application-note/AN12323.pdf
Hope this helps
Have a great day,
TIC
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