fails for me. I installed twrp-3.2.1-0-athene, unlocked the boot loader and can boot into the recovery mode. Installing the custom kernel, e.g. e-0.7-n-2019122535327-dev-athene.zip or any other custom kernel for athene via adb sideload worked without error or warning.
However rebooting just does not work. The phone switches off and stays off. The only way to get it back on is the recovery.
I did not find anything in the dmesg.log or recovery.log, but I am not sure, this is the place to look.
Any help is appreciated.