Yes i Navigate through the raw system file to check the Carrier bundle settings, and by "Operaterbundle.bundle" you mean the Selected Carrier such as Pageplus, Cricket or MetroPCS right?

Cause in my MetroPCS carrier bundle I'm seeing my Max Bitrate at 15360000

SMSSizeInBytesSentAsMMSInstead - 973

iphonemms.apple.com/iphone/uaprof-2MB

Im tryna narrow it down to what i have to tweak with and yes its the cc is patched