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How to do Firmware upgrade(U-boot, kernel, rootfs) for Var-som-solo/dual IMX6 board

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  • How to do Firmware upgrade(U-boot, kernel, rootfs) for Var-som-solo/dual IMX6 board

    Hi,

    I want to do a firmware upgrade that includes u-boot, kernel and rootfs using a USB stick. This means on plugging the USB stick should automatically update the firmware. For kernel and rootfs I am copying the images into a temporary location and using the A/B update strategy. But I am not able to find a method to update U-Boot. I can't use a bootable sd-card for this. Is it okay if I directly erase the U-boot partition and copy the new U-boot into that partition will it cause any problem? Is it feasible to do like this? Which other modules will get affected if I erase the U-Boot while system is running.

    Sorry for this long question.
    Thanks in advance.

  • #2
    Maybe this may give you some ideas how uboot update could be done:
    https://www.imx6rex.com/software/how.../#update_uboot

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