ins Creed Bloodlines Doesn't Work...?

I believe you'll need firmware version 6.20. It’s simple really… Sony has structurally changed the firmware in a number of ways prohibiting current homebrew in its current state. If custom firmware 6.xx were to happen right this day then developers would need to adapt their homebrew to the 6.xx kernel. Not to mention other functions would remain broken too. In the end it would be somewhat similar to the 1.50 to 3.xx transition we experienced way back when. So lets stick to the game plan and these regular 5.50 GEN / 5.03 HEN patches are likely to accommodate what’s needed; i.e. compatibility for games requiring 6.20 or higher. Lets just hope we’re back on PSN with GEN-D3/HEN-C, and then we can save Custom Firmware 6.xx for another day