Hi,
Thanks for your answer. I do have an internet connection, I did the upgrade on a working installation. In this case, RUT240 is configured as WiFi client and I can confirm that DNS requests are being resolved properly.
I was able to install and configure the package via SSH using `opkg install` and I also tried to update the packages using opkg update but the web GUI still displays empty list for packages. One thing to mention is that opkg update fails on one of the package repositories:
Downloading https://downloads.openwrt.org/releases/21.02.0/packages/mips_24kc/vuci/Packages.gz
*** Failed to download the package list from https://downloads.openwrt.org/releases/21.02.0/packages/mips_24kc/vuci/Packages.gz
I'm about to upgrade another router soon but since it's in a remote location, I'd like to be sure that the upgrade works as intended. One thing I forgot to mention is that I needed to hard reboot the router after FW upgrade as it wasn't responding to anything. Then, after about three hours, the router went completely offline again. After those hiccups the router has been running fine for several days now.