Update on PAB(WLE1216v5-20) went off again without a hitch as well as reboot. As this is the second in a row I will try activating automatic updates 
Update on A(SDIO)B(WLE900VX) worked, but reboot still needed physical interaction. So I installed reboot-issue-workaround-v4 and already the first reboot (for this workaround) succeeded.