Not long ago my router found a new firmware and I decided to upgrade it. I was on the "Archer C7(EU)_V4_180425" firmware and the new one is "Archer C7(EU)_V4_190411" it's one version higher than the last. The upgrade went well, the router rebooted at the end of the process (as it should) and everything is working so far. The only problem is, that the Internet indicator LED - which was green before - has became yellow. In the routers main menu it says that my Internet connection is weak. Beside this I have an IP address, the internet connection is working fine (just measured 650/300 Mbps), WiFi devices also can connect to the router, etc... I've double checked the cables connecting the router to the modem, even used a brand new 1m long Cat5e cable between the two, but the yellow light is still there. Tried to power cycle both the modem and the router several times, but no change. I think it's not normal and I'm sure something is with the new firmware. What should I do know? Is it possible to downgrade the firmware to the older version? Will there be a newer firmware to this router that maybe fixes this problem?