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How do you downgrade PSP 4.0?

Updated: 10/5/2023
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Wiki User

15y ago

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Downgrade your PSP system to version 1.5 by turning your PSP battery into a Pandora's battery. You need are an original PSP battery (with more than 50% charge) and a Memory Stick Pro Duo with 1GB memory or above Users can downgrade their PSP to version 1.5 because they can upgrade their PSP to any version from 1.5. If you upgrade your PSP to version 3.51, you can play any downloaded games and run any applications.

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15y ago
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13y ago

6.20 Is not yet downgradable. That's why they developed TN HEN for OFW 6.20 version.

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12y ago

by Pandora stick

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Q: How do you downgrade PSP 4.0?
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