View source for IOT-DIN-IMX8PLUS: U-Boot: Recovery

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

{{Note|Follow the [https://github.com/NXPmicro/mfgtools/blob/master/README.md 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-DIN-IMX8PLUS firmware recovery image''' from the [https://www.compulab.com/products/iot-gateways/iot-din-imx8plus-industrial-iot-gateway/#devres U-boot section of IOT-DIN-IMX8PLUS Resources] to the host Linux station.
* Extract the archive on the host Linux station:
<pre>
unzip iot-din-imx8plus_firmware-recovery-image.zip -d /path/to/iot-din-imx8plus-firmware
</pre>

= Determining RAM size =
Determine the correct DRAM size of the IOT-DIN-IMX8PLUS according to the label located on the bottom side of the device. DRAM size is encoded in the unit's '''D''' [https://www.compulab.com/products/iot-gateways/iot-din-imx8plus-industrial-iot-gateway/#specs option].<br>
Use the table below to determine '''DRAM_CONF''' value:

{| border="1" cellspacing="1" cellpadding="3" style="border-collapse:collapse; text-align:center;"
! Product '''D''' Option
! DRAM_CONF
|-
| D1
| d1d8
|-
| D2
| d2d4
|-
| D4
| d2d4
|-
| D8
| d1d8
|}

= Flashing U-Boot Firmware =
* Power off the IOT-DIN-IMX8PLUS device.
* Connect the IOT-DIN-IMX8PLUS micro-USB Programming (PROG) port with the host Linux station USB port using a standard micro-USB cable.
* Power on the IOT-DIN-IMX8PLUS device via the main DC input.
* Issue the following commands on the host Linux station:
<pre>
uuu -lsusb
</pre>
: Expected output:
<pre>
uuu (Universal Update Utility) for nxp imx chips -- libuuu_1.5.4-0-gbdea8bd

Connected Known USB Devices
        Path     Chip    Pro     Vid     Pid     BcdVersion
        ==================================================
        1:533    MX865   SDPS:   0x1FC9 0x0146   0x0002
</pre>
* Flash U-Boot Firmware. Replace <DRAM_CONF> with the actual value:
<pre>
sudo uuu -d -v -b emmc /path/to/iot-gate-imx8plus-firmware/flash.bin.<DRAM_CONF>
</pre>
* 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:
:<pre>env default -a ; saveenv ; reset</pre>


[[Category:Linux]]
[[Category:U-Boot]]
[[Category:IOT-DIN-IMX8PLUS]]