3.0.0.4.376.44_0 (merlin build)

Hello. After a long time of separation, the ASUS RT-AC68U router returned to me, which I once gave to someone and configured. The firmware installed on it is Firmware: 3.0.0.4.376.44_0 (Merlin build) - quite old. Currently, practically no browser supports the router's web server anymore, I am...