The only way to update that API is upgrading BlackBerryOS. The module unfortunately cannot be installed separately.
It's quite possible that one of the Applications of OS 3.8 wasn't preinstalled, and it was part of one of the applications. For example, I have had API problems before if I kept the Phone application uninstalled. Can you check Options->About and let me know what specific versino of OS 3.8 is?
There are multiple versions of 3.8; some early versions of 3.8 such as 126.96.36.199 contains numerous bugs, which should be upgraded with 188.8.131.52 (Platform 184.108.40.206).
roofus -- What version of OS 3.8 or OS 4.0 are you using?