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PSP: How to Upgrade from 3.60 m33 to 3.71 m33-2 Custom Firmware
When upgrading and downgrading you need to have at least 78% power in the psp
Continue reading : PSP: How to Upgrade from 3.60 m33 to 3.71 m33-2 Custom FirmwareDownload 3.71 m33 install :Here or download from megaupload
