Installation:
- Download Khadas Rescue system (flash to SD card, insert, power on, hold FUNCTION and short press RESET button)
- Download Armbian image and place it to the USB drive (copy .xz or .img file, do not flash with Etcher)
- Boot into Khadas OOWOW and install to eMMC by selecting image from USB drive
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copy your OS image into any removable storage SD / USB Flash , etc (formatted by exfat or ext2/3/4 or fat)
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start OOWOW by press FUNCTION + RESET
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exit from wizard
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plug removable storage with OS image
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choose this image to write by menu → Write image to eMMC and up to .. mounts
Serial console:
Blue color line: Tool Pin TXD, orange color: Tool Pin RXD, black: Tool Pin GND
How to boot from SD card? After power on, quickly press the Function key 3 times in 2 seconds, then release the key. More at official manual.
To be able to boot Armbian SD card image and install Armbian to eMMC, use one of the methods to boot into upgrade mode. If you have most recent board revision (1.4 ->) then you only need to quickly press the function key (middle) 3 times in 2 seconds. Release and boot will proceed from SD card. Then use nand-sata-install utility to flash to eMMC.
Serial console:
Blue color line: Tool Pin TXD, orange color: Tool Pin RXD, black: Tool Pin GND