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PSP Firmware Upgrade

Official Sony PSP Firmware Updates can be found in this section. But I will only be putting the firmware's which are needed in order for another PSP to downgrade, in this section.

e.g.
1. If you have a 2.50 PSP you need to use the 2.71 or 2.80 upgrade to downgrade your PSP to 1.50.

2. You have a 2.81 PSP you need the 3.03 PSP update to upgrade, then downgrade your psp from 3.03 to 1.5 as there are no direct 2.81 PSP downgraders.

Downloads

3.50 Playstation Portable Upgrade   MIRROR's:    Direct Download   Rapidshare Download

3.03 Playstation Portable Upgrade   MIRROR's:    Direct Download   Rapidshare Download

2.80 Playstation Portable Upgrade   MIRROR's:    Direct Download   Rapidshare Download

2.71 Playstation Portable Upgrade   MIRROR's:    Direct Download   Rapidshare Download

2.00 Playstation Portable Upgrade   MIRROR's:    Direct Download   Rapidshare Download

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