NeoBiosMasta Deck for Unibios 4.0 Chip SNK Neo Geo

The NeoBiosMasta Deck is an adapter designed to simplify the installation of the Unibios 4.0 BIOS on SNK Neo Geo MVS arcade boards, eliminating the need for complex soldering. Compatible with MV1B and MV1C boards and others using 27C1024 EPROMs, this deck makes BIOS chip installation clean, quick, and reversible.

Thanks to its ZIF socket, it allows easy BIOS replacement or updates without tools. This model is available in two versions: with the Unibios 4.0 chip pre-installed or without it for users who already own the BIOS.

Ideal for both technicians and collectors who want to add advanced functions (AES/MVS mode, region selection, cheats, jukebox, debug, and more) to their Neo Geo board in a safe and professional way.

Instructions

Instruction Manual

WARNING: The original BIOS must be disabled and two wires soldered, so installation requires soldering skills. We are not responsible for any hardware damage. Please inform yourself properly before proceeding.

Features

• Adapter for installing Unibios 4.0 on SNK Neo Geo MVS boards
• Compatible with 27C1024 EPROM chips
• Available in two versions: with or without Unibios chip
• ZIF socket for tool-free insertion
• Quick installation with minimal soldering required
• Enables easy BIOS updates and replacements
• Compatible with MV1B, MV1C boards and similar
• Compact and secure design for arcade boards