This is an old revision of the document!
Please try to use latest oowow images, last workable tested images start from 230227.000 version
OOWOW can be booted from SD
or USB
or SPI
with limited functions and PXE
bootup OOWOW from SD card is prefered way
Latest OOWOW Edge1 image for SD card or USB flash:
https://dl.khadas.com/products/oowow/system/edge-oowow-latest-sd.img.gz
curl -L http://dl.khadas.com/products/oowow/system/edge-oowow-latest-sd.img.gz \ | gzip -dc | dd conv=fsync,notrunc of=/dev/sdX
OOWOW Edge1 images:
https://dl.khadas.com/products/oowow/system/versions/edge/
Bootup process from SD card can be depends from eMMC content.
Default eMMC content is android image which come from factory.
In this situation we recommend to use universal-bootup-oowow-from-sd-card
This way must works in any situation for Edge1 :
Quick press FUNCTION
x 3 times for bootup OOWOW from SD card