I have successful flashed the Linux Image from https://builds.96boards.org/snapshots/reference-platform/openembedded/morty/hikey960/rpb/latest/ with the instruction on https://discuss.96boards.org/t/how-soon-until-a-linux-prebuilt-image-is-available/1715/10.
$ sudo fastboot flash boot boot-.img
$ sudo fastboot flash dts dt-.img
$ sudo fastboot flash system rpb-console-image-hikey960-*.rootfs.img
But when i change back the “Ext Boot Mode Switch” and power on again the HiKey960 it will not boot.
No LED is flashing, no Information is on the UART and no Picture is on the HDMI-Port.
When i use the ASOP-Image it will boot and i have an Picture an the HDMI.
The UART-Connection i have cross-checked with my normal HiKey.