Should I upgrade PPSSPP?

[cloudropis]

I have 0.9.6.2 right now, I downloaded it a while ago and shortly after a new version came out. I was going to update when I heard people talking that old saves weren't compatible with the new version. I don't really follow the PPSSPP development, was it a rare occurrence or has it been a well known issue with the new versions? And if it was, is it safe to upgrade now? In case I find out the old saves don't actually work anymore is there a way to revert to a previous version to keep them, or to convert them or something?

Also, slightly off-topic, what is the right section to ask something about PPSSPP and real hardware cross saving (AKA if I need something specific or if I just have to play a game on PPSSPP, copy the ISO and the save file over to a real PSP and resume)?

[GamerzHell9137]

Saves work fine but if you wanna be 100% sure then just download the latest build, make a new folder and extract it there and then copy all your saves to the new PPSSPP.

[LunaMoo]

Both saves and savestates actually improved in new versions, but one of the fixes does happen to cause a problem when old in-game saves made in ppsspp cannot be loaded for example in games from God Eater series which is what you might heard(/read).
It's very easy to fix through, so don't worry, just have to enter settings->system, there disable "Respect FPU rounding (disable for old GEB saves)", and your old save from such game should load fine. Then while still in-game you can just re-enable that option and save your game again to overwrite old "bugged" save with a new "fixed" one.

You want to keep that option enabled especially if you care about cross compatibility with psp as it did fixed it for a few games. Many games work just fine by copying saves between the psp<->ppsspp, however, there might still be some games which saves aren't cross compatible, you can find a list of them in here that's also a place where you could report ones you find which still doesn't work on latest versions from buildbot.

[cloudropis]

Perfect answer, very happy to know that! Gratz on getting a feature even great companies struggle to implement working.
Many thanks!