Hi @Clive_A !! I did it first, as you said. Then everything gone OK. Thanks a lot.

Hi @Josvell, did as you said. Had to do the 2.2.3 prior to 2.2.4 as oriented by tp-link firmware page. Then, the upgrade to 2.2.6 occurs with no errors. Thanks a lot.

Receiving this error, when trying to upgrade the firmware. This is the file downloaded: ER605(UN)_V2_2.2.6 Build 20240718 Publication date: 2024-08-05 Language: English File size: 22.51 MB