On Fri, Feb 06, 2026 at 11:25:26AM +0100, Mark Kettenis wrote: > Yes, these Rockchip SoCs typically try to boot from eMMC before > booting from microSD. So if there is something on the eMMC the > microSD will be skipped. So erasing the eMMC is the right approach.
Also, if the SoC has SPI flash connected with what looks like valid boot code it will usually try to boot from that before either eMMC or the SD card, which although it isn't the case here might be a source of unexpected and non-obvious problems in the general when using Rockchip based boards.
