Hi @anon21640558 maybe this link is a good up to date review since your last visit Gigaset - GS290 - gs290 - Documentation Suggestions - #69 by mc21
It also includes the idea that the very newest 2021 update to the device is actually in advance of the /e/ “base”.
The "too new"idea also appears here. WI-FI Problem on GS290 after installation e/OS