Other Consoles

0- Sega Saturn Region-Free BIOS Update Information
Update Boxart
Add Screenshots
Add Video


This was hacked by D-Force but I had jinn install this on a chip and solder into my Saturn and now I no longer have to patch games or use switches or button pressing.

It can also be used SSF or any other Saturn emulator to bypass the region lockout press on the disc at retail time. Anyhow here is D-Force with some more info for you all.

I suggest getting the mod done as jinn and APE do a great job and totally worth it, if in the UK drop me a PM and will point you in the right direction.

Yeah, so I hacked the Sega Saturn Bios and removed regional lockout and CD authenticity checks. Obviously, that was the reason I was dying to get a Saturn a couple of days earlier. Thanks to an unnamed individual, I've got one now and promptly installed that modified Bios.

Good news first: regional lockout bypass works just fine on real hardware.
Install this Bios in your Saturn and play any authentic game in any video mode you like, no need for clunky switches or cartridges anymore.

The bad news: Although the CD authenticity checks in the Bios have been removed, CD-R copies still don't boot.
I basically have zero debugging capabilities on real hardware, so I can't really tell what the exact problem is, but credible sources suggest that the CD interface has to be unlocked by initializing with a genuine Saturn disc before being able to boot a game disc. This is rather unsatisfying, but I'm releasing this anyway, it's better than nothing.

I'll be getting a modchip for now and will have a look at this again once Dr. Decapitator has dumped the CD interface program ROM.
I could imagine that there's a debug command hidden somewhere that lets you boot CD-Rs without authenticating first. We'll see...

Also, if you plan on installing this Bios in your Saturn, keep in mind that the pinout of the original Bios maskROM is similar to the 27c800 and don't forget to byteswap the ROM before copying it to a 16bit Eprom. Btw, this hack is based on the japanese 1.01 Bios.

The Iso Zone Recommends...

Cloudstores Premium for fast, instant and unrestricted downloading!
1 File download, Total size 437.53 KB

(3 Comments) Latest comment was 2 years ago
atreyu187 View Profile
Message User
Thank User
3 years ago
Everyone should have both of these hacked region free BIOS' on their HDD's. D-Force did the Sega Saturn while I did the Dreamcast BIOS. Enjoy gamers!!
BLKBRDSR71 View Profile
Message User
Thank User
2 years ago
Now I can play NiGHTS again! Thanks!!!
Please Log In
You must be logged in to your Community Account in order to post a comment
Please login using the form located at the top right of this website or Create a Community Account

Community Accounts are free and allow you to upload content, posts comments, participate in our forums and more!
Log In
Community Login

Log me on automatically each visit
I forgot my password | Create a Free Community Account
New Forum Topics
Recent Comments
Anybody know if this version supports the VGA cable. There is two versions ...
Posted by panteric View Profile
Message User
Thank User
13 minutes ago
Very underrated, awesome game!
Posted by lino11 View Profile
Message User
Thank User
38 minutes ago
Still Life
yeah, game is really atmosperic and storyline is very good..you must try it ...
Posted by Night-Spider View Profile
Message User
Thank User
3 hours ago
Sweet Home
it should alread be patched with the translation patch.
Posted by FlarePhoenix View Profile
Message User
Thank User
5 hours ago
Community Stats
2935 users online • 73 registered • 2862 guests

Registered users: abzorbal, acrox, Aidanpuddy, andre5600, Berzerk, BetaMAX$, bobrpggamer, boredguy123, catch_2030, Chuaygo, command37, darkricky, def03, demon, djpannda, DoYouEvenLift, dreamcast459, Eiesoldar, EllisVanSofa, Enriisyoran, Epicc, Fireinthehole, fugiapple12, gamer249, gamergoonboy813, Gman, jairisongs, kof888, lino11, Lumbergh, maGer, mahocrash, Master13, MeD, miker, NaoEdwin, pannta, panteric, PAT, Preston2011, Prussia, punishrs, Raven575, redneck78, rnuls, ryder4life, Sageowl, SakaiYuuji, segadream131, Shadow_StarLust, spencer5976, synnchan, TheTechDoc, thewheelman282, tojoro, Urkman1, vash2k6, XC-3730C, Z-Blaster, Zengoku, zinyui

34,351 topics • 319,224 posts • 95,957 registered users.
Our newest community member is bra247 View Profile
Message User
Thank User

Home | Contact Us | Privacy Policy | File Removal Request | Premium