I read your explanation about the Station M1 on the firefly forum. There you speak about linux mainline builds for the M1. So if I understand correctly, I just have to use one of your rk3228 testbuilds and burn the u-boot from the firefly forum to the sd-card?
RK3188 RK3288 RK3328 are different chips. 3188\3288 is a 32 bit chip (ARMHF), 3328 is a 64 bit chip (AARCH64). They have different u-boot and different kernel configuration (different GPUs). Station M1 is rk3328 (64-bit). Images for M1 are not compatible with rk3188\3288.