Hi.

O.K, I'm back
After giving up for one day, I decided today to try and install nitdroid, following Coderus instructions from almost 2 years ago..... and it worked.
This is allowing me to check that WiFi, audio, tactile screen, charging, etc. are working fine.
I think I'll tinker a bit more with it (I don't like Android , that's why I'm in this forum ) ,and try to install Sailfish again later.
I'll keep you updated of my progress.

Regards.