Hi NXP Community,
Iam currently working on fastboot for imx8mp board phyboard pollux board, but whenever i try to unlock the bootloader it return an error message i will attach screen shots below to better describe my problem here,
whenever i try booting from u-boot i get some other error messages like "usb init failed -19"

please find the attached images to better understand the problem

my goal is to flash images to the board in fastboot mode
@weidong_sun