Today Sony has pushed out another Official Update to combat the OFW 4.45 Brickfest that had happened early this week. Check out the changelog provided below.
You can now hide notifications when you earn a trophy. >See details
An issue in which the XMB™ (XrossMediaBar) menu is not displayed after updating the system software to version 4.45 was observed. This version of the system software addresses this issue.
If the XMB™ menu is not displayed, you must perform the update by starting the system in safe mode. Select here for details.