SEGA CD / Mega CD Region Free BIOS EPROM

This is a replacement BIOS EPROM for the SEGA CD / Mega CD Console

It allows the console to boot games from any region.

Another use is to install a PAL or USA BIOS into a Japanese Console to change the menu language to English!

So, in other words you can convert a Japanese console to English. Simple hey!

Just try and match your MCD BIOS with your Console region. So if you have a PAL Megadrive modded to 60hz, then you’re best off installing a USA BIOS in the Mega CD so it matches.

Supplied as an M27C1024 EPROM

Installation is simple.  Just remove your stock BIOS and replace it with this chip. Some Mega CD consoles come already socketed, so you can easily just lift out the old ROM and install this one. Some models do not have a socket and require you to desolder the original ROM and solder in a socket first. This desoldering process is very difficult so reach out to us if you need us to take care of the installation. One socket is supplied with all orders.

If you’d like us to install it for you, simply buy our installation service here

If you are unsure which BIOS your unit requires please reference the chart bellow. 

<table

CD Add-on Type

Console Attached

BIOS Required

PAL Mega CD Model 1

USA Genesis

Sega CD USA Model 1 BIOS

PAL Mega CD Model 1

PAL Mega Drive

Mega CD PAL Model 1 BIOS

PAL Mega CD Model 1

JAP Mega Drive

Sega CD JAP or USA Model 1 BIOS

PAL Mega CD Model 1

PAL Mega Drive (60Hz)

Sega CD USA Model 1 BIOS

USA Sega CD Model 1

USA Genesis

Sega CD USA Model 1 BIOS

USA Sega CD Model 1

PAL Mega Drive

Mega CD PAL Model 1 BIOS

USA Sega CD Model 1

JAP Mega Drive

Sega CD USA or JAP Model 1 BIOS

USA Sega CD Model 1

PAL Mega Drive (60Hz)

Sega CD USA Model 1 BIOS

JAP Mega CD Model 1

USA Genesis

Sega CD USA Model 1 BIOS

JAP Mega CD Model 1

PAL Mega Drive

Mega CD PAL Model 1 BIOS

JAP Mega CD Model 1

JAP Mega Drive

Sega CD USA or JAP Model 1 BIOS

JAP Mega CD Model 1

PAL Mega Drive (60Hz)

Sega CD USA or JAP Model 1 BIOS

PAL Mega CD Model 2

USA Genesis

Sega CD USA Model 2 BIOS

PAL Mega CD Model 2

PAL Mega Drive

Mega CD PAL Model 2 BIOS

PAL Mega CD Model 2

JAP Mega Drive

Sega CD USA or JAP Model 2 BIOS

PAL Mega CD Model 2

PAL Mega Drive (60Hz)

Sega CD USA Model 2 BIOS

USA Sega CD Model 2

USA Genesis

Sega CD USA Model 2 BIOS

USA Sega CD Model 2

PAL Mega Drive

Mega CD PAL Model 2 BIOS

USA Sega CD Model 2

JAP Mega Drive

Sega CD USA or JAP Model 2 BIOS

USA Sega CD Model 2

PAL Mega Drive (60Hz)

Sega CD USA Model 2 BIOS

JAP Mega CD Model 2

USA Genesis

Sega CD USA or JAP Model 2 BIOS

JAP Mega CD Model 2

PAL Mega Drive

Mega CD PAL Model 2 BIOS

JAP Mega CD Model 2

JAP Mega Drive

Sega CD USA or JAP Model 2 BIOS

JAP Mega CD Model 2

PAL Mega Drive (60Hz)

Sega CD USA or JAP Model 2 BIOS