Here is the CommCenter patch for iOS 5:
CommCenterClassic (iPhone 3GS/4 and iPad/iPad2 - Infineon baseband):
@8F910 (file offset @8E910) 0x3046-> 0x0120
CommCenter (iPhone 4S -0 QualComm baseband):
@A2AA8 (file offset A1AA8) 0x3046-> 0x0120
In theory it patches all signatures checks, so it should be ok for CMDA hacks too. But I do not have a CDMA phone or service (no local CDMA carriers), so no way to test or be sure (I do not even know how the CDMA setup is done).
If you are in a hurry and knows your way around, patch it and do not forget to use "ldid -s" and "chmod +x" (755).
I will soon make a Cydia package with both patches.