If you want TRUE VGA, then yes, you'll need to 'enable' it. But I wouldn't recommend it, unless you truly want it.
I suggest you read this
first (there's a lot of info, but it is very useful in understanding exactly what it is).
http://www.aximsite.com/boards/x50-x...a-related.html
And if you're still interested, read this (this contains all necessary files to get the x51v to display true VGA):
http://www.aximsite.com/boards/x50-x...1v-a12-en.html
As for updates: A12 Rom is the latest (check to make sure your device has this). There are some other driver updates, but they're not critical.
HTH.