First I'd like to mention that I've checked probably all of the topics with similar issues in the forum and none helped. I updated my ISP package to 500 Mbps (previously was 100 Mbps) and I noticed my

I am trying to upgrade my firmware version with Archer C7(EU)_V2_180305 or Archer C7(EU)_V2_170803 but I get the same error with both firmware bin files: I have no idea what is wrong and how to fix it