Software Name: BlackBerry Handheld Software v188.8.131.524 (All Languages)
File Name: 9900jAllLang_PBr7.1.0_rel2534_PL184.108.40.2062_A220.127.116.113_DoCoMo_Japan.exe
Download Size: 288 MB
Published Date: 04/15/2013
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