@Ulbi These devices acting very strange. The update is now working from an iPhone with a WiFi Connection to a slave deco.

@Ulbi thanks but I tried it with a LAN connection from MS Edge and Chrome. the cable was connected to a slave X50 but with a Ethernet backhaul. Maybe a connection from the laptop to the main deco...

I am running 3x Deco X50 v1 with 1.50 build 20240222, but I can not update to any other version. The web interface says after the upload operation successful and then nothing happens i tried update...