Although the version is v2.5 this is really the first official release of emuELEC, a pure emulation project that does not include Kodi. This should not be used to update Sx05RE as it is a whole new project.
WiFi should be easy to configure by editing the file called wifi.txt in the root of the sdcard (edit it right after you burn the image to the SD card) or by creating a wifi.txt file in /storage/.config/wifi.txt
put your Wifi details inside the file like YOURSSID:YOURPASSWORD don't put nothing else, then you can select the wifi script in the "Retropie" category in ES if all went well you should have wifi, for now it only connects to wlan0. For the N2 you will need a wifi dongle.
Background music: mp3's should go in /storage/roms/BGM and enable BGM in ES.
SSH user: root
SSH password: emuelec
And many, many, many changes to many to list here.
v2.3.1...shantigilbert:EmuELEC
If you have any questions or comments, find me at discord here: https://discord.gg/cbgtJTu
EDIT: I had to re-upload the files because of a mistake, if you downloaded the files before this message was here, you need to re-download it.