03-21-2018, 06:04 AM
Oh dear, sounds like you are in a pickle...
AFAIK, the SPI has been flashed with some form of bootloader, and you aren't booting from eMMC, you won't be able to boot from a SD card, the boot order is eMMC -> SPI Flash -> SD -> USB. As far as erasing from GPIO, I'm not sure... I'm guessing it's possible if the SPI Flash is sharing the common SPI pins. Path of least resistance will be eMMC + a USB/eMMC adapter. I'll write a SD card image for rock64 and double check tomorrow though...
AFAIK, the SPI has been flashed with some form of bootloader, and you aren't booting from eMMC, you won't be able to boot from a SD card, the boot order is eMMC -> SPI Flash -> SD -> USB. As far as erasing from GPIO, I'm not sure... I'm guessing it's possible if the SPI Flash is sharing the common SPI pins. Path of least resistance will be eMMC + a USB/eMMC adapter. I'll write a SD card image for rock64 and double check tomorrow though...