Update: Dark_AleX perfecting his work further with PspStates Experiment v2…

• Fixed important bug in inter-thread code (semaphore wasn’t waiting due to interrupts disabled), that caused the load state to not be completely read in some cases. This caused black screen after state load (unless you just saved that state, in this case state was still in ram), or even worse, game not working properly due to partial load.
• Added states per game basis. The controls are slightly different: old controls now do a local savestate/loadstate of the game, while pressing additionally select button will save/load a global state. See instructions for more info.
• Fixed bug that caused normal sleep mode waking up immediately.
• UMD discs and ISOs in normal UMD mode are now supported. However, they require to nullify umdcache, by flashing one file, read the instructions below.

And courtesy of Demonchild, the PspStates tutorial.

Nothing pisses me off more than having to advance to the next checkpoint before I’m able to save my game. Yeah, you know what that’s like — dinner is getting cold, people are yelling for you to hurry up… Really it never ends; that is, until now… Dark_AleX has unveiled his latest & greatest project — PspStates. Save your game in its exact state — wherever, whenever.

I strongly encourage you read the included documentation before using PspStates. That covers installation, usage, and other things you should know.

PspStates is in the experimental stages of development; bugs are likely to exist so you shouldn’t rely heavily on using it to save your game state, not yet anyway. Try it out and leave your feedback below.

Download: PspStates Experiment v2

- source: dark-alex.org