Was this an incremental FOTA update via SW update or installing complete software using Nokia/Ovi Suite? If the former sometimes resetting device and re-installing existing software can help.
Symbian specialist until 31/01/2013 with interests in Maemo & MeeGo but an aversion to Windows!
Did you also install the two further Applications 1/2 & 2/2 updates? If not, connect your phone to Nokia Suite and install those two updates.
If you have already installed those two further updates have a read through the following troubleshooting guide.