I don't know if any guide already exists. If anyone is interested I'll try to write one.
Only keyboard and mouse are required.
No hacks, no ADB
UPDATE:1 -Connect the scope to interne via ehernet.
2 -Connect an USB keyboard and mouse (mouse not mandatory)
Launcher install:3 -Type win+B to start Lightning Browser.
4 -Search for "ruthless apkpure" or type directly
https://apkpure.com/it/ruthless-launcher/shubh.ruthless.5 -Download the Apk.
6 -Type win+N to open notifications. Wait the download to complete then click to install.
7 -Once installed, type win+N, open android settings and search for "home"
8 -Select "Home app" then change default launcher from "Launcher" to "Ruthless".
9 -Now if you type Win+ENTER you should see your new home.
10-Swipe up to open the app drawer and tap on Explorer. Leave it open.
Go to your pc and download:11-Soft Keys apk from
https://apkpure.com/soft-keys-home-back-buttons/com.softkeys.homebuttonandbackbutton12-Floris Board 0.4.0 apk from
https://f-droid.org/it/packages/dev.patrickgold.florisboard/13-Put APKs on a pendrive and insert into the scope.
14-Using Explorer opened before, navigate to USB then install and configure both softkeys and keyboard.
DONE!
Now you can access your Android home with the softkeys and install any application compatible with Android 7.
To restore the scope to its previous state, use a file explorer to delete all the downloaded files, uninstall all the apps then go to settings>home and restore the default launcher "Launcher".
The suggested APKs are not mandatory, you can choose other launcher, soft keys aNd keyboard compatible with android 7.
Disclaimer: the procedure looks pretty safe but you try at your own risk!