DAP-2660 bricked after upgrade

Hello, I'm new here.
I have some issu with my Dlink dap 2660, after upgrade to openwrt firmware ap stuck with red led light. No ping, nothing.

pls help

start by https://openwrt.org/docs/guide-user/troubleshooting/failsafe_and_factory_reset.
next, learn how to properly use the subject field when opening new threads.