U-boot-imx upgrade

[MJaroc]

Hi,

i need to upgrade u-boot in working device. I cant use UUU or upgrade from tftp in u-boot console - it must be posible in working linux console. I now the risk. Ill try to unlock write mmcblk2boot0 and dd u-boot.bin file to /dev/mmcblk2boot0, but after that system is not booting. DNF only upgrade binarry file in /boot/ directory, it doesnt affect to bootloader.

Can anyone help me with this? For now i can only UUU u-boot.

Working system:
Linux visionsom-8mm-cb-std 5.4.24-lts-somlabs_imx_5.4.24_2.1.0+gd0ce74ff14da #1 SMP PREEMPT Fri Feb 24 11:59:09 UTC 2023 aarch64 aarch64 aarch64 GNU/Linux

[Bio_TICFSL]

Hello,

If You want to upgrade uboot there is not other option than erase and burn with new uboot, you are trying to erase so the uboot is gone, but you have to erase and burn uboot.

Regards

[MJaroc]

Hi,

i erase uboot from mmcblk2boot0 and program (by "dd" program) with u-boot.bin from YOCTO compilation, but system doesnt boot. I succesfully erase bootloader and i ask how to program a new one (maybe i need to write to specific addres or i burn a wrong file).

[Bio_TICFSL]

Hello,

Read the documentation of the board, probably you need modify sw, before and after burn the SD image.

Regards