Advantech ROM-5721 User Manual page 34

4.1 How to recovery ROM-5721 system?
This section provides detail procedures of restoring the eMMC image.
If you destroy the onboard flash image by accident, you can recover a system following
these steps.
4.1.1 Recovery by SD card
1. Copy 5721A1AIM20LIV90113_iMX8MM_flash_tool.tgz package to your desktop.
2.Insert SD card to PC
3. Make a bootable sd card
# tar zxvf 5721A1AIM20LIV90113_iMX8MM_flash_tool.tgz
# cd 5721A1AIM20LIV90113_iMX8MM_flash_tool/mk_inand/
# sudo ./mksd-linux.sh /dev/sdg
4. Insert SD card and copy 5721A1AIM20LIV90113_iMX8MM_flash_tool to USB disk
5. Insert USB disk and SD card then Boot from SD
6. Enter usb disk folder, make a bootable emmc
# cd /run/media/sda1/
# cd 5721A1AIM20LIV90113_iMX8MM_flash_tool/mk_inand/
# sudo ./mksd-linux.sh /dev/mmcblk0
4.1.2 Recovery by UUU tool (USB OTG)
1. Download uuu tool from
(https://github.com/ADVANTECH-Corp/uuu/releases/tag/v20200619)
2. Create a folder with below files

uuu

imx-boot-imx8mmrom5721a1-sd.bin-flash_evk

fsl-image-validation-imx-imx8mmrom5721a1-20200508182440.rootfs.sdcard
3. Connect USB OTG cable from PC to device
4. Set the correct boot mode, then power on
ROM-5721 User Manual 46