I tried to go back to the stock firmware but I can't connect via ftp to my router.
It is actually running openwrt (already did a reset) and listens to it standard IP adress 192.168.1.1. I can ping 192.168.1.1 and also get response, but cant get connection. All I get is:
ftp: connect to address 192.168.1.1: Connection refused ftp: no response from host
I tried different time frames during boot, no chance.
Unfortunately there is no windows PC near by to use the AVM recovery tool. the MacOS Firewall is disabled. Working on Mac Terminal with brew inetutils as ftp.