Infoera  Freshman Member

Oh, I forgot to mention that upgrade are done in standard 1 Gbit LAN, so there aren't network issues of any kind

Hello, I've found this topic after two failed attempt to upgrade firmware on GS1200-5 v2 and GS1200HP-8 v2 with firmware released in November 2023. I'm astonished that, one year later, there is exaclty the same issue. A colleague solved via culr, but for me both switches were ready for RMA. Very bad, Zyxel. :|