last update, today PlayStation 3 developer @Enstone (FMT_Enstone) updated to PS3 ControlConsole API (CCAPI) v2.70 Rev 5 supporting 4.81 CEX CFW.
Download: CcApi_package_2.70_Rev5.rar (7.9 MB) / CcApi_package_2.70_Rev5_dev.rar (9.5 MB)
To quote from his Blog on the release: CCAPI 2.70 Revision 5
CCAPI (ControlConsoleAPI) has been updated to 2.70 rev5. This new version adds support for 4.81 CEX CFW. Download is below.