Help me? I'm confused, 6.35Pro-A issues.

Hello there, I am new to the psp scene.
So if I'm asking a stupid question, please forgive me.
I am running the new Cfw-6.35pro-A. It's not permanent cfw.
I have the error 80020148, in which my game could not be started.
>research shows that I have to go into recovery mode and toggle a few settings.
But every time I hold R and and power it goes back to the normal screen, also resetting
my cfw back to ofw.
Question: How do I fix this error without the recovery menu? Or is there any other way to access the recovery menu?

 

Recovery menue you only have on permanent custom firmwares. What Iso loader are you using?

 

Prometheus Iso loader. If I need to be more specific let me know? D:

 

Might be that the game is not compatible, those iso loaders are far from perfect at the moment There's not much you can do I'm afraid.