Help for my downgraded PSP3K

[blizzaga4]

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Ako gi downgrade akong PSP3000. And I do have some PSX or PS one cd's and Ive read some tutorials about converting them to ISO then converting them to EBOOT. Do you guys have any steps on how to do these coz murag wala kaayu klaru ang mga sites and thx!

My PSP: PSP Brite 3000
Firmware: 5.03 MHU

[blizzaga4]

any help guys