Software Name: BlackBerry Handheld Software v7.1.0.2534 (All Languages)
File Name: 9900jAllLang_PBr7.1.0_rel2534_PL5.1.0.652_A7.1.0.923_DoCoMo_Japan.exe
Download Size: 288 MB
Language: English
Published Date: 04/15/2013

9900/OS7.1.0.923
Download HERE
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.
Sincerely,
Guido DR @furiousguido