Sega Saturn Fenrir Duo Optical Drive Emulator

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Sega Saturn Fenrir Duo Optical Drive Emulator
Viking Child & Switchblade II

Fenrir - Optical Drive Emulator (ODE) for the Sega Saturn

With Fenrir, you'll never use your old cd drive. Simply replace it with the Fenrir by removing the disk drive and plug both Fenrir cables. No soldering required.

You will be able to store all your games in the microSD, launch homebrews and games and load them faster from the menu.


  • Improved loading time with the SD card.
  • Support any microSD (and SDCard with an extender) of any size.
  • Easy to add games with the microSD.
  • Support .ccd/.iso/.bin and redump rips.
  • Support FAT32 and exFAT
  • Region free !
  • Support the Sega Saturn Movie Card !


The installation is very easy, there is no soldering to do, the kit is ready to use.

  • Fenrir supports up to 2499 games per SD card.
  • IGR to return to the menu.
  • Press ABC + Start on your controller to return to the menu.

Grab the latest firmware here:


How do I know if I have a 20 or 21 pin Console?

Fenrir 20 pin drives are motherboard revisions VA0, VA0.5, VA0.8, VA1.
Please note some VA1 revisions come with a 21 pin drive instead of a 20 pin drive.
In order to find out if your console has a 20 pin drive without opening it, you can look for a screw at the back, next to the power supply socket.
If you see 3 screws, then it’s a 20 pin VA0. If not, then you need to check that the power and reset buttons are oval in shape and not round.
Another way to check, is to open the CD lid and look towards the back of the cd mechanism, to the gap on its right side.
If you see a white ribbon cable running towards the back, then you have a 20 pin drive.
If none of the above helps, then you most likely have a VA1 console and you need to open it to make sure your drive uses a 20 pin ribbon.


How to update the firmware

Updating your Fenrir board’s Firmware, is incredibly easy.Tools Required: 

  • A microSD card, FAT32 formatted
  • A computer (Windows, OS X or Linux) with a microSD or SD card slot with adapter
  • The latest Firmware Update.bin file, which you can download from here

1. Insert your microSD card to your computer’s card reader. The drive will show up on your Computer (Windows) or the Desktop (OS X).

2. Open it with Windows Explorer / Finder / File Browser.

3. Drag the “update.bin” file to your SD card.

4. Safely eject the card.

5. Make sure your Sega Saturn is turned off. Insert your microSD card to the Fenrir microSD card slot.

6. Turn on your Sega Saturn. The animation won’t play. After a while, you will see the Saturn Bios screen.

7. Select “Start Application”. The firmware update is done!



A) PIRACY – Stone Age Gamer Retroworks, Inc. ("Stone Age Gamer") does not support or condone piracy. Flash carts and similar devices Stone Age Gamer sells and supports are intended to be used only for the following purposes: development, playing games licensed by Stone Age Gamer for use with the product, and/or playing currently owned personally backed-up games and media where it is legal to do so. Stone Age Gamer does not offer support for any other use of this product.

B) PERSONAL BACK-UPS – In many territories it is legal to make back-ups for personal use and/or archival purposes, however it may not be legal in all territories. Please learn the national and local laws regarding this subject before making back-ups for personal use. Please note, in most territories "Personal Back-up" means exactly that; back-ups you made yourself of games you currently own. This often does not include back-ups obtained via other methods (i.e. downloading), even if it is a game you physically own.

C) MODIFICATION & USE – Any unauthorized modification and/or non-intended use of this or any other flash cart product sold by Stone Age Gamer shall void both manufacturer and retailer warranties of that product.

16 Reviews

  • 5
    Great ODE

    Posted by John S. on Mar 19th 2023

    Easy install, plays all games I`ve tried so far, including translated games. Cheaper than all the other options. Heck,cheaper than most Saturn games.

  • 5
    Sega Saturn Fenrir Duo ODE

    Posted by M. Stasko on Mar 10th 2023

    Simple install, easy to use, and works well with Pseudo Kai cartridges. One of the best console mods out there! Considering the average price of Sega Saturn games nowadays, this is a must buy.

  • 4

    Posted by Matthew VandenBrook on Mar 7th 2023

    This ODE works really well. It`s extremely simple to install and use but I gave it 4 stars because I wish it had come with a better solution for posting it inside the Saturn. As it is, you are essentially balancing it on two of the posts that are in your Saturn and it just doesn`t seems all that stable to me. It`s a little wobbly.

  • 5
    Nice performance/cost ratio

    Posted by Rodrigo on Feb 28th 2023

    Also, once installed, the SD card is easy to reach without the need of a SD card extension

  • 5
    Easy to install, easy to use.

    Posted by Rock Handsome on Feb 17th 2023

    The install was so quick that I had the whole thing up and running within minutes and so far no issues with compatibility.

  • 5
    Fenrir Duo ODE

    Posted by Mike Jusenius on Feb 14th 2023

    Fantastic product, the install was simpler than I expected. I`d never really done any internal work on a console before but this was as close to plug and play as I could imagine, just a couple of screws and cables that slide right in. I also got a laserbear 3d printed mount/SD card extender for a cleaner looking install, which I highly recommend.
    Updating the firmware and importing my library was easy as pie, cannot recommend this enough for the price and ease of install.

  • 5
    Fenrir Duo ODE

    Posted by Louis on Feb 12th 2023

    Puts all your games in one handy place. Works perfectly.

  • 5
    This thing is amazing! Easy setup and works like a dream

    Posted by Jeff Jones Jr on Feb 12th 2023

    First I have to say, I got a great price and excellent availablity/batch/tracking notifications here on Stone Age Gamer. Install was very simple and gave me a good reason to clean up the inside of my Saturn after 20 years mostly sitting dormant(think I only have 8 physical games). I will say initially I had my ribbon cable going into the Fenrir in reverse but once I figured that out it booted up as it should`ve, no harm done! Firmware upgrade via the Fenrir site was simple as could be. The longest game loading screen so far has only taken 10 seconds, most take about 5 seconds out of the games I`ve tried so far, and it feels like SUCH a huge improvement just in that regard. I also installed an SD mount from LaserBear Industries that makes everything under the tray cover look nice and clean, so much better than seeing a bare CD eye looking back at me. If you don`t go that route it`s really nice that Stone Age Gamer offers a similar but simpler designed mount thats available right here on the site to order along with your Fenrir. Overall I`m SO satisfied with everything!

  • 5
    Great ODE

    Posted by Mike on Feb 11th 2023

    Reliable solution to replace the aging drive in the Sega Saturn.
    Installation is simple enough with no permanent modification to the console required.
    I paired it with a mount & sd extension for a nice finished look with easy access to the sd card.
    A 256gb card allowed me to backup my Saturn library with some room to spare.
    Considering the rising cost of Saturn games its worth it to avoid possibly scratching an expensive to replace disc.
    Any game I`ve played works great & haven`t had any compatibility issues so far, but haven`t tried any multi disc titles yet.