How do you downgrade 3.02 OE-B

I want to know how to downgrade my 3.02 OE-B.
why you ask becuase the PS1 games have slowdowns and i want to install i fresh copy. ive been searching but couldnt find anything can anyone please help.

thanks

why do you want to go back to a 1.50 psp??

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why you ask becuase the PS1 games have slowdowns and i want to install i fresh copy.

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well alot of my PS1 games have slowdown issues. and my psp games like d-day, outrun, daxter and metal gear solid have a strange lag. so maybe installing a fresh copy might fix the problem.

Hold R on startup then start the eboot

lol thanks i shoulda noticed that since it is the same for SE

you can install a fresh one over the old one, just make the dxar file, then put that and the oe flaser in the game150 folder and run from xmb (or if you brick and want to stay on oe, put the dxar and flasher inside recovery folder then run eboot through recovery-useful if you accidentally flash a 1.5 topmenu when trying to get custom xmb ions)

so can i go straight from OE-B to OE-A with Normal install?

yes, all of DAs custom hybrid firmwares format (delete, clean, wipe, etc) flash0 before installing the new firmware files