@Oscyp Resolved by myself. When connected through the cable - all options are visible and firmware update was successful.

You have completely misunderstood my post. I know that. Although it ends up with an error. Help me with that....

I cannot upgrade firmware to any of the existing new versions: Archer_C50v6_EU_0.9.1_0.2_up_boot[210111-rel37983] or Archer_C50v6_EU_0.9.1_0.2_up_boot[210222-rel54113]. Every time I try I get the...