u-boot v2009.08 for AR6MX series
https://github.com/frodolai/-boot_v2009.08/tree/rel_imx_3.0.35_4.1.0-bcm
make mx6q_ar6mx_config
make mx6solo_ar6mx_config
make mx6q_ar6mx_android_config
make mx6solo_ar6mx_android_config
make mx6q_ar6mx_android_config
make mx6solo_ar6mx_mfg_config
then
make -j4 get u-boot.bin
Flash to SD card
sudo dd if=u-boot.bin of=/dev/sdx bs=512 seek=2 skip=2