[solved] Partly bricked D-Link DGS-1210-16 (serial access is broken, but OpenWrt can be accessed via LAN; reboot is broken too)

[svanheule]

@fireburner

I can't perform a reboot from there either. The power LED just starts blinking very fast and I have to restart with power off/on.

This sounds like the SoC hanging on reboot, because fast blinking is the standard setting for the system LED. With the latest snapshots, the watchdog driver is now used to reboot the system. Other DGS-1210 devices require gpio-restart using GPIO 34 on the RTL8231 to properly restart the system, so my first guess would be that this is also the case here.