The 4.45 update was released a couple days ago to upgrade the system for better stability and trophy notification options. Turns out more and more people have been complaining that they are having issues with booting up their PS3’s, deeming them “bricked”.
Sony has started a community thread for users to stay updated, and to gain more feedback on the recent firmware.
They have apologized for the inconvenience and confirmed that there will be another update on June 27th to resolve the problem.
We’ve been compiling a screenshot of tweets by PlayStation: