Uploaded January 2022 | Updated September 2026, 2 weeks ago

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Neo Geo MVS Backup Ram Error Universe Bios Fix. Installing the Universe Bios 4.0 on Neo Geo MVS to bypass the error and use AES mode.

Tested on King of Monsters, King of Fighters and Neo Turf Masters.
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LINKS
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Universe Bios
http://unibios.free.fr/
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MUSIC
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Overview
♬: Karl Casey - Visitation - Alien Ruins
karlcasey.bandcamp.com/track/alien-ruins
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CHAPTERS
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00:00 Overview & Welcome
00:08 Taking a look at Neo Geo MVS 1 Slot
02:13 Plugging in MVS 1 Slot to Jamma
03:19 Neo Geo MVS Backup Ram Error
03:37 Taking apart the MVS 1 Slot
04:49 Backup Ram Chips & Battery Location
06:00 EEPROM Programmer for Universe Bios Neo Geo
07:38 Programming Neo Geo Universe Bios EEPROM
08:08 Removing and Fitting Replacement Neo Geo Bios EEPROM
08:51 Testing out Universe Bios in AES Mode
11:44 Next Steps and Wrap Up