I got the bootloader (AN12218S.zip) for s32k148 evb from https://www.nxp.com/docs/en/application-note-software/AN12218SW.zip .
But I did not find any info regarding to flash the bootloader in s32k148 evb.
I can able to set the bootloader mode by pressing the SW5(RST button) and power up the s32k148 evb by conecting usb cable from PC to 32k148 evb J24 connector. Now bootloader drive is appeared in my PC.
Then just drag and drop the AN12218SW.zito the bootloader drive is appeared in my PC? or I need to create a s-rec file for this bootloader application then I need to flash.
Could you please help me to flash the bootloader in s32k148?
For flashing the software into MCU I recommend you to use the S32 Design Studio for Arm 2018.R1
There you can open and run the project.
I hope it helps.
If you have any questions, please, let me know.