My PSP is currently running 6.60 ME-1.6, and has been for a while. It never caused me any issues, but lately I picked up SRTZ Hakai Hen, and it started giving me a black screen when I try to progress to mission 47 (THE END GAME! ARGH!). I figured before I try to replace the rom/repatch it I should update my CFW. So what should I upgrade to?