Playstation store update won't work?

Hey guys today I wanted to buy minecraft from the ps store but I need to update it to version 1.08, I clicked onto it to do it but then the screen goes black as if something's gonna happen, but nothing did, I left my ps3 to load for about 15 minutes and the update still did not start, I couldn't even press the home button I had to turn my ps3 on and off, I've tried this a few times and still nothing, right now I'm downloading the latest system update hopefully that does something, but has this happened to you before? What did you do to fix it?