How to update from 3.6 to 7

[Arhontex]

Sorry, I'm a newbie, do I understand correctly that this is also relevant for version 6.6, that is, from version 6.6 you can also switch to 7.0 without completely reinstalling the system?

Upgrading Linux Lite within a series (for example from 6.4 to 6.6) does not require installation from USB/disk.
The mechanism is fully supported and requires just a few clicks to initiate the process.
6.6 is the last release in series 6 and will remain supported until mid 2027.

There is no equivalent, supported mechanism to upgrade Linux Lite between series.
The recommendation when moving from series to series (for example from 6.6 to 7.0) is a fresh installation of 7.0 from USB/disk.

I see, thank you.