bios file is a bin file... x3 bios is 1MB.
Rar file needs to be extracted using winrar or similar.
evolutionx is up to you...
the website provided,
http://teamxecuter.com/flashbios
has several methods of flashing your bios...
Network flashing uses http, so you can use internet explorer, type
http://ipaddress, eg "
http://192.168.0.101" in the address bar if it is networked properly it should work like shown in the tutorial...
ping your xbox to see if is reachable.
Otherwise you have to burn a disc or have it already on the xbox hard drive.
If you have X3 bios in there already then you can flash using FTP in the admin folder.