Software Name: BlackBerry Handheld Software v126.96.36.19930 (All Languages)
File Name: 9900AllLang_PBr7.1.0_rel2930_PL188.8.131.521_A184.108.40.2068_O2_UK.exe
Download Size: 282 MB
Published Date: 10/25/2013
As usual, always backup your BlackBerry device prior to performing any install, either an official or leaked OS.
Also, pull your battery at least 3-4 times throughout the day to give the OS time to settle in.
Guido DR @furiousguido