Upgrading US Nokia N95 to v20 firmware, Part IV, Copy Protected WMAs Working!
To get copy-protected WMAs (Rhapsody, Napster, etc.) working after upgrading your firmware, you must re-format the SDHC card. Obviously, you'll need to back up the card before doing this. You must use the formating function on the phone. This is found in the Tools folder > Utilities > Memory. Then choose Options > Format Memory …