find a copy of sony's ofw 5.03. do not update through the psp fw updater on xmb(you'll wind up with 5.51)
then follow the ChickHEN instructions and be aware there is also a cfw enabler that can be used with chickhen.
also (i cant remeber) it may take a couple tries to enable ChickHEN because of its instability, but there is no harm to psp
take care, good luck
let us know if any other q's

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