the murena-FP4 (bought december 2022 at murena shop) works fine with e/os/ 1.6-s.
At /e/ image ROM download there is a new 1.8-s version.
But my 1.6 does not offer the “Updater” nor the “Advanced” option as mentioned at
How to update /e/ 
(my FP4 is running german language)
Can you please give me some hints how to achive an update (to 1.7/8) without loosing my data?
Hello, and welcome in this forum.
First, consider to give other users all the informations of your phone and system:
Vendor Name
Device name
Device CodeName
Version of /e/OS or Stock which existed previously
Is the device Rooted / Not rooted
You can find the full version of eOS in Settings/Phone information/Android version then copy with a long tap on /e/ OS version.
In the meanwhile, can’t you find in Settings the first item Updates?
This.
Einstellungen - Aktualisierungsprogramm.
The location of this settings item changed. The guide is outdated regarding this detail (version 0.12 in a screenshot), which can happen. Pinging @Manoj .
THNX for all your replies 
With these the update to 1.9 went very well - happy again!
