PSP Save to JPCSP not working

[xero45]

Recently I've gotten JPCSP to work on my computer and I have been playing SD G Generation Overworld with it. I didn't want to start a new game entirely so I decided to transfer my PSP save to JPCSP. When I try to load the save file, I do not get the usual "0x corrupt messages". Rather it fails to load and returns back to the title screen with no message.

I have already try enabling and disabling the crypto option. I am led to believe that this problem is due to the fact that my PSP save was saved under 5.50 Prometheus-4 and hence it is the wrong format for JPCSP. Any thoughts, inputs or fixes?

[Zekro]

The cfw should'nt be important,almost all psp saves work,doesn't matter the cfw.Did you select the savegame and pressed accept(can't remember correctly the name)

[VIRGIN KLM]

There is an encryption level that sometimes JPCSP fails to decrypt even with crypto engine on.