follow this link for the instructions... use same settings to all OS versions...
» how to correctly setup your bb9900 to save battery & improve performance
Jay, Quick question her: I'm about to use BB-BOSS & shrink for the very first time (BB-9900). What exacttly did YOU remove? Me and some of us would really appreciate this.
FYI: My previous devices are; 9000-9700-9800..