Not only should you not upgrade, you should also downgrade. Downgrading allows you to run something called Devhook which allows you to run games up to 2.71 and higher firmware, without upgrading from 1.5, while still retaining homebrew use
If you don't have GTA:LCS, then your best bet is to upgrade to 2.71 to downgrade to 1.5
Cloudy
Bookmarks