Recovering Zcom ZCN-1523H and Planet WNAP-7300 from bad firmware flash
OpenWrt Attitude Adjustment Beta2 images for Zcom ZCN-1523H a.k.a Planet WNAP-7300 are broken. You can do recovery by opening case (three hidden screws under label on back) and soldering serial port (115200-8-N-1, TX closest to AR71xx, RX next and then GND, ignore fourth pin). After adding serial port cause of fault was quite obvious (kernel lacks support for ZCN-1523H) and also how to repair it without adding serial port.