VAR-SOM-MX6 Yocto NAND Recovery

As an easy and fast way to recover the VAR-SOM-MX6 NAND flash, Variscite provides a recovery SD card image that can be used to install the pre-built U-Boot, Linux kernel and the UBI file system. This SD card image includes a script (nand-recovery.sh) that installs all the boot images and root file-system.

Preparing rescue SD-Card:

• Plug-in supplied SD card to your Linux machine, run dmesg and see which device is added (i.e. /dev/sdX or /dev/mmcblk0)
• Download mx6qd-som-nand-recovery-sd.v22_1.img.gz (Available from Variscite's FTP)
• For the Dual lite and Solo download mx6dlsolo-som-nand-recovery-sd.v22_1.img.gz

$ gunzip mx6qd-som-nand-recovery-sd.v22_1.img.gz
$ sudo dd if=mx6qd-som-nand-recovery-sd.v22_1.img of=/dev/sdX bs=128k

Recover Nand Flash:

• Insert the SD card into the SD/MMC slot of the custom board
• Press and hold the boot select button, power-off and power-on the board
• The board will automatically boot into Linux

Flash from GUI

• Press the right arrow on the upper right corner to change the desktop into Utilities.

• Push FlashAndroid or FlashYocto icon.

Flash from command line

• Login as root (no password)
• From Linux command line, type: "nand-recovery.sh" (This will install Linux on the NAND)
• To install Android type: "nand-recovery.sh -o Android".
• Reboot and Unplug the SD card