Today developer bitsbubba has a released an unofficial build of PS3Ultimate Cinavia Protection Tool. This update brings support for customer firmwares 4.53 through 4.65. Check out the changelog and the download link provided below.
Changelog:
- Added 4.53-4.65 compatibility
- Removed unnecessary files for faster install (and smaller pkg)
- Renamed to PS3Ultimate Cinavia Protection Tool (tool instead installer as it Removes/Restores Cinavia)