1. Use BannerBomb and HackMii Installer to Install HBC
2. Install IOS16-64-v257.wad, IOS36-64-v3094.wad, IOS50-64-v4889, and LU64Fix.wad.
3. Use AnyRegion Changer to change Region, EULA, and rgnsel ONLY and SAVE. DO NOT INSTALL SYSTEM MENU 3.2. CLICK SAVE! DO NOT CLICK GO!!!
4. Install SystemMenu 3.4E/U/J.wad matching the region which just changed to.
5. Upgrade through WiFi.
6. Use Trucha Bug Restorer to patch IOS36 and install any reversion of cIOS above rev11 if you don't like rev11.
7. Done!!
If you have had problem in installing HBC, you could start from step 2 by BannerBomb to the end then install HBC after all by wad or HackMii Installer.