05-31-2023, 08:58 PM
Or, you could flip the switch to change audio to serial, and make/buy an adapter
For my rockpro64, it has had a serial connection its whole life
boot_targets for its uboot is mmc0 mmc1 ........ (in uboot mmc0 is emmc)
so, about 3 seconds in, I hit space and get a uboot command line,, then
env set boot_targets mmc1
boot # and then it boots SD
if the boot fails, it comes back to uboot command line
I don't think you could do this blind, I tried with rockpro, only input over serial was accepted
For my rockpro64, it has had a serial connection its whole life
boot_targets for its uboot is mmc0 mmc1 ........ (in uboot mmc0 is emmc)
so, about 3 seconds in, I hit space and get a uboot command line,, then
env set boot_targets mmc1
boot # and then it boots SD
if the boot fails, it comes back to uboot command line
I don't think you could do this blind, I tried with rockpro, only input over serial was accepted