I tried to upgrade my DLINK DAP 2610 to the latest OpenWrt Snapshot (downloaded here: http://downloads.openwrt.org/snapshots/targets/ipq40xx/generic/openwrt-ipq40xx-generic-dlink_dap-2610-squashfs-factory.bin). After downloading the file, I did proceed with the upgrade via the DLINK Web GUI wich caused the AP to reload as expected but did not start anymore since there. The LED stays solid red for a couple of minutes after powering up and starts flashing then very slowly. The AP also responds to ping on his default 192.168.0.50 address, but neither ssh, nor telnet or http/https is working.
While searching around I found another forum post (-> [Solved] DAP-2610 Bricked - Help Needed), wheras I start doing tcpdumps on the Interface connected to the PC in the hope that the rescue tftp server is doing something or other communication of the AP - but unfortunetaly nothing comes from the AP at all.
As mentioned as well in the the other topic, I got some soldering equipment and a serial-to-usb adapter and connected it to my PC (baud rate 115200), on the TX, RX and GND connections, as they recommended to not use the 3.3V at all.
Even with serial connected, I can‘t see something during the bootup with putty - it just stays dark and is also not responding to any commands send via serial.
Any idea what i could try out additionally to get the AP work again?