Install the below OS dude
The best OS I have tested in my lab is 5.0.0.680 which can be found here >>>
http://www.blackberryforums.com/gene...nguage-du.html
It has the fastest speed, good battery life, amaaazing signal strength, and no problems with Wi-Fi connectivity such as the other operating systems.
Try it out now, I suggest a complete OS wipe via the use of BBSAK though, this is not mandatory though.
MAKE SURE YOU BACKUP EVERYTHING BEFORE YOU ATTEMPT TO UPGRADE