PS1 Mayumi Playstation 1 One V4 Modchip

Ps1 - Mayumi V4 Mod Chip For Playstation 1 (Region Free / Play Backups)

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The Mayumi Mod Chip requires 1 more wire than the MM3 and is the superior choice if your console supports it. 

It requires 1 more wire to install it but is significantly more reliable than the MM3 when installed correctly. 

Each Mayumi Modchip Comes with a Free ModzvilleUSA seal of approval sticker!

For more information and installation Diagrams, visit the following website.