How to upgrade UNOFFICIAL old version to newest version of /e/os?

[gersh0m]

Did you followed the installation guide AS it is?
Eventually I completed the job but only because I encountered this post:

eOS doesn't install on Moto G7 Plus

Ok, so, what am I missing here? NONE of the recovery images work for the Moto G7 Plus (supported model supposedly, I checked the model number). It just doesn’t boot into e’s recovery! And I tried some versions from the past 6 months too, just in case! No bueno! Eventually, I bit the bullet, and installed TWRP (both the latest, and an older one). Both booted fine! And via their ADB Sideload menu option, I was able to install the copy-partitions image just fine. But the eOS image itself just does…

So, definitively https://community.e.foundation/u/Eugenia saved my days (and nights )
Moto G7 plus guide is simply wrong and I don’t know why no one correct it.

So, I don’t really know if it actually possible to update from that custom P unofficial build directly to the current latest T build, but I know by sure that it is not possible to install anything following that guide.