Hey guys. I've been making some PSX EBOOTs as of late and have noticed that a lot of them don't like to work on 5.00 M33-6, irregardless of the POPs. The wierd thing is, they all work fine on 4.01 M33-2, even on the original flash. What's the difference between the host firmware and the POPs firmware being applied? I would love to revert back to 4.01 M33-2 on my main PSP (so I can use Ultimate Black again), but Bleach Heat the Soul 6 won't load saves on 4.01 M33-2.