Stuck flashing bootloader to IMX8MP with UUU

[yulyuri]

Hello everyone, I am a complete beginner working with embedded linux and the IMX8MP EVK board. I hope you can me help me out as i am quite frankly clueless. I am hoping this is not a careless and embarassing mistake on my part but I hope you can guide me over anything I could have potentially missed.

My aim was to build a custom yocto linux image for my board, then flash it to the onboard emmc and boot into my image.

Ive succesfully built an image with yocto (Kirkstone) with imx-image-full. After the build, I found these files in my deploy directory:
-imx-boot-imx8mp-lpddr4-evk-sd.bin.flash_evk
-imx-image-full-imx8mp-lpddr4-evk-XXXXXXX.rootfs.wic.zst (which i then decompressed to get the a .wic file)


I then proceeded with the flashing with UUU on my ubuntu VM. I put the board in serial download mode . sudo uuu -b emmc imx-boot-imx8mp-lpddr4-evk-sd.bin-flash_evk. UUU just finishes but hangs at 100%, I never see success.. it never finishes and nothing else happens. Resetting it gives me the same thing.  I get the same thing when i try to flash my image instead and both at the same time . 
Note: the board shows up as a HID device in lsusb and UU U does not show any errors just 100%

I am fairly new to this. Do let me know if you require more information . Any help is appreciated 

[pengyong_zhang]

Hi @yulyuri 

Please use our default BSP image and see the result, I think its your compile problem, About how to compile yocto Image, Please refer the YOCTO user guide documentation file.

https://www.nxp.com/design/design-center/software/embedded-software/i-mx-software/embedded-linux-for...

B.R

[pengyong_zhang]

Hi @yulyuri 

please run the command "uuu -b emmc_all <.wic>file"

B.R

[yulyuri]

Hello. Unfortunately, I still see the same thing where it gets stuck at 100%. I appreciate your help! Any clue why this is happening?

[yulyuri]

Here are the pictures of what i see in my terminal and in putty. Hope that can help a bit!