I sucessfully updated to alpha4 by using the method via ssh. It's really awesome to have access to a shell on the box
Kodi seems more stable than alpha3.
I was able to add samba share, but scrapping movie and tv show informations at the same, made kodi buggy, and was displaying an empty library.
Few reboots of the box, and few "update library" fixed the library.
I was able to play some movies properly. fast forward is working great too.
No problem to add opensubtitltes addon.
The remaining annoying issue(except som kodi freeze/crash under high load), is the resolution switch not recognised by the TV, which forces me to switch HDMI source again when booting the box, and when playing movie too.
In system/settings resolution, I could see two resolutions 1920x1080p ?
Which one are we suppose to use ?