Difference between installin /e/OS and a OS on a computer?

[piero]

@cedric.vdd

The conclusion I drew from these discussions is that there is a kind of rule that advises not to go backwards in Android versions
…
but a post sowed the seeds of doubt in me [–> … no need to be on specific firmware version.]

i saw this post

Official /e/OS builds for Nothing - CMF Phone 1 (tetris)

I didn’t wait and tried it myself, and it totally WORKS. Previously I was using Nothing OS 3.0 which is android 15, and downgraded to android 14 which comes with /e/OS. Faced no issue.

even is it still unclear for me in this sentence if @priyansusahoo downgrade to Nothing 2.6 before installing /e/ or use directly the /e/ build to downgrade (as needed parts of the firmware are included), one have to confirm the process…
.
be carrefull about the Android Security Update release date included in the new build
not older than the one already installed is still valuable advising…
.
Settings > About phone > Android version > Android Security Update .