Thanks, but I’m dummy: I’m a faked smart user, I need detailed instructions 
I tried the reset button but it didn’t worked.
I’ll try the way indicated in the docs.
In the wiki there isn’t a section specific for the GL-MT300N-V2 (mango) so I’m going to use the one for the GL-AR150 because they look physically similar (a depth tech reason ).
Can you confirm I’m looking in the right direction?
PS Thanks for the notice for the link: the
correct one is (the alternative method, the luci one)