IOT-LINK: U-Boot: Recovery

Introduction

This article describes flashing U-Boot firmware image with a Linux Host using Universal Update Utility (hereinafter UUU).

Follow the Universal Update Utility instructions to install and setup the UUU tool on a host Linux station.

Getting Recovery U-Boot Firmware Image

• Download the IOT-LINK firmware recovery image from the U-boot section of IOT-LINK Resources to the host Linux station.
• Extract the archive onto the host Linux station:

unzip iot-link_firmware-recovery-image.zip -d /path/to/iot-link-firmware

Flashing U-Boot Firmware

• IOT-LINK USB SDP port is located behind the back panel. Remove the back panel to access the USB SDP connector.
• Connect the SDP port with the host Linux station USB port using a standard micro-USB cable.
• Power off the device via the main DC input.
• Power on
• Run:

uuu -lsusb

Expected output:

uuu (Universal Update Utility) for nxp imx chips -- libuuu_1.5.182-7-g54b900c

Connected Known USB Devices
        Path     Chip    Pro     Vid     Pid     BcdVersion      Serial_no
        ====================================================================
        1:731    MX93    SDPS:   0x1FC9 0x014E   0x0001

• Flash U-Boot Firmware.

sudo uuu -b emmc /path/to/firmware/flash.bin

• Make sure the deployment is completed with no error

After Installation

• Turn off the device
• Disconnect the micro-USB cable from the device's programming port
• Turn on the device
• Press a key to prevent a possible autoboot and get into the U-Boot command prompt
• Restore default boot environment, save it and reset device:

env default -a ; saveenv ; reset