Image burning via UUU failed

Leo-Yang — Wed, 12 Nov 2025 02:47:39 GMT

Hi,

We have a custom board based on the i.MX8MP-EVK, with a 16GB eMMC (as shown below).

Our image includes the dbg-pkgs package, so the resulting .wic.zst file size reaches about 8GB. When we try to flash it to the eMMC using uuu, the flashing process seems incomplete — it is expected to take around 10 minutes, but it finishes in just 2 minutes, and the board fails to boot afterward.

The uuu version we’re using is 1.4.149, and the command executed is:

./uuu -b emmc_all imx-boot-imx8mpevk-sd.bin-flash_evk imx-image-multimedia-imx8mpevk.rootfs.wic.zst

Additionally, we have modified the imx-boot-bootpart.wks.in file as follows:

# short-description: Create SD card image with a boot partition # long-description: # Create an image that can be written onto a SD card using dd for use # with i.MX SoC family # It uses u-boot + other binaries gathered together on imx-boot file # # The disk layout used is: # - ---------- -------------- -------------- # | | imx-boot | boot | rootfs | # - ---------- -------------- -------------- # ^ ^ ^ ^ ^ # | | | | | # 0 | 8MiB 72MiB 72MiB + rootfs + IMAGE_EXTRA_SPACE (default 10MiB) # ${IMX_BOOT_SEEK} 32 or 33kiB, see reference manual # part u-boot --source rawcopy --sourceparams="file=imx-boot" --ondisk mmcblk --no-table --align ${IMX_BOOT_SEEK} part / --source rootfs --ondisk mmcblk --fstype=ext4 --label root --align 8192 --fixed-size 10G part / --ondisk mmcblk --fstype=ext4 --label root2 --align 8192 --fixed-size 1500M part / --ondisk mmcblk --fstype=ext4 --label evcsdata --align 8192 --fixed-size 1500M bootloader --ptable msdos

Is there any way to completely flash a large image to eMMC?
Or are there specific uuusettings or partition layout adjustments we should apply for large images?

Best regards,
Leo

Re: Image burning via UUU failed

joanxie — Wed, 12 Nov 2025 07:52:17 GMT

do you mind giving me the download log? add -v in the uuu command, and could you confirm if your image is fine or not? for the partition questions, you can refer to the discussion here

IMX8MN-EVK EMMC Partition from UUU tool - NXP Community

i.MX ProcessorsのトピックImage burning via UUU failed

Image burning via UUU failed

Re: Image burning via UUU failed