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It has long been thought that the Xyclops chip, which contains the BIOS on a v1.6 motherboard, is not flashable. However I recently discovered it has a serial port with a variety of interesting commands. It supports dumping the BIOS as well as the Intel 8051 code that runs the SMC functions of the chip. And just like the other Xbox versions that have the TSOP flash, we can reprogram the BIOS on the v1.6. In one way this mod is better than your typical TSOP flash because it's easy to recover from if you screw it up. The serial port will still be available. Tutorial Required items: 3.3V USB to UART adapter. You can find many of these available online at very low prices. See if you can get one that has a TX resistor value lower than 1k because the Xbox's RX has a 1k pulldown. v1.6 Xbox with Xyclops marked A-A02. A-B01 is not supported. Soldering iron Either the GUI for Windows or the command-line script: GUI Download XycloModGUI by OGXLABS https://www.ogxlabs.com/xyclomodgui Script Python installed on your PC Download the script https://github.com/Prehistoricman/Xbox_SMC/blob/master/Xyclops/xyclops_flasher.py A 256KiB BIOS bin file Steps: Connect your USB to UART adapter to the Xbox. This can be done either by connecting to the AV port, or by opening the Xbox and using internal connections. Internal connections Xyclops pin 29 is DEBUG. Wire it to the 3.3V standby voltage. Xyclops pin 64 is TXD. Wire it to the adapter's RX pin. Either: Near Xyclops: OR under the AV port: Xyclops pin 63 is RXD. Wire it to the adapter's TX pin. Either: Top side, near AV port: OR under the AV port: Connect ground to the adapter's GND pin. You can use the xbox metal case, any screw holding the motherboard down, or pin 2 of the LPC header (see pin layout here). AV cable - not advisable! See AV plug diagram here https://xboxdevwiki.net/AV_Cables Pin 5 is DEBUG. Wire this to 3.3V. Pin 18 is TXD. Wire this to the adapter's RX pin. Pin 6 is RXD. Wire this to the adapter's TX pin. Remove resistors below the AV port: R5M3, R4M10. This will affect the video mode recognition and can prevent normal display, so they should be replaced after the mod is complete. Connect any ground pin (such as pin 6, 7, or to the adapter's GND pin. If you cut LFRAME to do a modchip install, you will have to reconnect it. Plug in the USB. It's better to do this before powering on the Xbox Plug in the Xbox. It can be left in standby. Identify what serial port your adapter has. On Windows you can expect it to something like COM5. GUI method: Run the XycloModGUI exe Select the COM port if you know it Click the Connect to Xyclops button Click Browse... to select the BIOS to flash Click Start Selected Operation to flash the BIOS to your Xbox. It should take about 6 minutes Script method: Install Python 3 if you haven't got it already Open cmd, powershell, bash, or whatever the terminal is on your PC. Execute the script by writing python xyclops_flasher.py your_bios.bin COM5 to the terminal, replacing your_bios.bin with the path to your BIOS file, and COM5 with your serial port. Press enter Follow the on-screen text. It should say Xyclops communication established and ask if you want to erase the flash. Once the connection has been made, or even attempted, you may be unable to turn on or off the Xbox. That's normal. The SMC gets frozen while the serial is active. The Xyclops can get upset and stop responding sometimes. If you can't get communication, try unplugging the Xbox for 10 seconds. If you get erase timeout, make sure you made the GND connection. If you can't get communication, then your serial adapter might have too much internal resistance. Identify its TX resistor and reduce it to ~500 ohms. The flashing process takes about 2 minutes, and the verification (if you want to do it) takes another 2 minutes. If you want to verify again, use the -v option: python xyclops_flasher.py your_bios.bin COM5 -v The Xbox power button should work again, so try turning it on. If you get video issues (like greyscale video) and you removed two resistors in step 1.2.5, you will need to place the resistors back. Disconnect the DEBUG wire for enhanced stability. The Xyclops will freeze whenever it sees any activity on the RX pin. FAQ Can we use a BIOS bigger than 256KiB? Not on a retail xbox. Some rare devkits may be able to do 512KiB but I have not confirmed that. I ran the script and my Xbox won't turn on! Yes, the SMC will freeze when it receives serial communication. The script should resolve that if it exits successfully, so I must assume it failed. You can unplug your Xbox for 10 seconds and plug it back in to reset and try again. Can this be done via a software method? Not to my knowledge, but it is rumoured to have been discovered. Technically the answer is yes, but it involves using the serial first and then reprogramming the SMC (advanced). What else can it do? The Xyclops serial port is able to do a lot of low-level actions on the SMC. For example, it can 'press' the front panel buttons, change fan speed, change LED colours. It can also potentially do some hacky things such as spoofing the video cable mode, or bypassing the boot challenge (FRAG). We are also able to re-program the SMC which could lead to some more advanced mods for specific and niche purposes. Through the AV port??? Yeah I know right? We can't be sure why Microsoft made it this way. It's too slow for factory programming AND there's those resistors preventing it on retail units. It could definitely have expedited the development process of Xyclops, but that doesn't explain why it was left present in the retail motherboard.

Thinking of doing a 128mb mod for shits'n'giggles. I know you need a certain bios to access the extra RAM on startup but is that only for the dashboard? Like once a 128mb application or game is launched does it just, see it? I ask because I want to stay with the current EvoX bios I have flashed to my Aladdin, it just works for me. I don't like Cerbios because of the lack of the classic intro and hacking one in increased boot times dramatically last time I tried it. Forgive me if this has already been answered elsewhere. Couldn't find any info on this specific question.

Cerbios Bios Mirror (Updated) Current: 2.4.2 The Dogs Are Back From Their Vacation (Fixed Splash Screen) Improved Dual HDD Support. (DriveSetup = 3) Updated UDMA Settings In INI To Support Both HDDS. Please Ensure You are Running Latest Cerbios.INI New UDMA Settings: ; Set Master Drive UDMA mode 0-6 on cold-boot UdmaModeMaster = 2 ; Set Slave Drive UDMA mode 0-6 on cold-boot (Enable DriveSetup = 3) UdmaModeSlave = 2 Released Updated Version Of LithiumX Which Allows Browsing Of 2nd HDD Additional System Stability Improvements. .........................:Dual HDD Support Info?:........................... This Is A First For The Original Xbox And You May Encounter Some Bugs. Please Report Your Test Results In Our Discord Room For Future Improvements. To Custom Format Your 2nd HDD You Will Require FATXplorer 3.0 beta 32 or Higher. This Can Be Downloaded From The Below Link. https://fatxplorer.eaton-works.com/3-0-beta/ Existing Partitions Are Supported With Dual HDD Configuration. This Includes Stock HDD or Cerbios Formated Extended HDDS * ....................:Dashboard & Software Updates:........................ Existing Open Source Dashboards Will Need To Be Updated To Support Secondary HDD "\Device\Harddisk1\Partition(#)\" -------------------------------------------------------------------------------------------------------------------------------------- Since Cerbios now uses the ini for setting UDMA speeds, there is only one bios file present. ModXO uf2 file is included as well, in case you don't want to use PrometheOS for some odd reason. And the dogs are back. Cerbios Tool, updated for version 2.4.2, has been included in this package. Happy flashing! ----------------------------------------------------------------------------------------- https://drive.google.com/file/d/1ulkZnZxlBJzvK5QIKWeKFTJ-ftWRY_ZJ/view?usp=sharing https://mega.nz/file/ZDwh0SxI#Z1ybirEsf55dCVZBNQ5xlkusrijNsrYvB9QxMiySTKY

I just recently got a ModXo 3.0 RP2040 with a compatible Raspberry Pi (can't remember which one) and put Cerbios Hybrid 2.4.2 on it and I get no sound when using Cerbios, I loaded the onboard BIOS and surprisingly, I get sound but when I use Cerbios, I don't strangely, I can't figure out how to fix this, Everything inside the console is fine, and all solder joints on the chip are good. I am on a 1.6 original Xbox.

I was playing with a different 007 Agent Under Fire game save hack and while flashing a new BIOS on a version 1.0 Xbox I flashed a 256k BIOS(STUPID I know). Yep it was FRAGing afterwards now you can either fit a mod chip and be done with it or do a 3 wire flash recovery by following the instructions that can be found by working the Google on the interweb. The instructions say 1 wire soldered to ground and the other 2 get soldered to points on the bottom of the mother board(pain in the butt as you now have to remove the PCB again), Me been lazy and not wanting to remove the PCB again found an easy way to do the 3 wire trick. {pic 1} You need a test lead with alligator clips both ends and a pin. {pic 2} Clip the pin in one end and the other on the metal shield(you did leave the metal shield in didn't you)and the point of the pin is gently held on pin 1 and 2 of the TSOP chip. {pic 3} Power on the Xbox and if all goes well your Xbox boots. Remove the pin that's shorting the 2 pins to ground. Now flash the correct 1024k (1 meg) BIOS. If you don't like the idea of shorting the pins on the TSOP IC the points in the pic below show the same points on the top of the PCB and the bottom of the PCB. {pic 4} 1 2 3 4 Inside the box on lower right of pic 4 are the same points as in pic 1 On side note I did try a mod chip and with some BIOS's the Xbox booted but with no video out but the Xbox was still showing on my home network and I was still able to network in to the box. SS Dave Those who can hard-mod, Those who can’t soft-mod. Ps If you like it don't forget to say thanks and please give me any feedback good or bad!

I've got an admittedly silly and redundant but possibly useful mod/repair idea for the Xbox. Hear me out. PLCC or other flash chip ribbon adaptor with a socket that replaces the stock bios. I came up with the idea when I was fixing yet another Xbox with a dead TSOP last night. After installing the header and fitting a modchip it came back to life no problem. But what if we could just replace the bios directly by removing it from it's socket and reprogramming the flash chip like on a PC? Without the modchip stuff. I imagine most people wouldn't attempt a soldering job like this. But for someone like me who regularly repairs Xboxs it would be great. Bit of future proofing too, those old TSOPs are dying increasingly more lately. If I had the means I'd get to work creating it but I don't know the first thing about designing or creating ribbon cables. I've brought it here in case anyone else wants to use the idea Feel free to tear my idea to bits or agree with it. Just wanted to test the waters by presenting it. I've attached a crudely drawn diagram to show what I mean.

Here you get a shit load of pre patched EvoX files. 144 EvoX bios'es in total. These files are for 128MB XBox'es version 1.0-1.4 and 1.6/1.6b. You get these in many different versions in many flavors like: EvoX 128MB (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX 128MB 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX 128MB HDplus (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX 128MB HDplus 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX 128MB XBoxHDMI (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX 128MB XBoxHDMI 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB UDMA2 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB UDMA2 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB UDMA4 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB UDMA4 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB UDMA5 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB UDMA5 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB HDPlus UDMA2 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB HDPlus UDMA2 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB HDPlus UDMA4 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB HDPlus UDMA4 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB HDPlus UDMA5 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB HDPlus UDMA5 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB XBoxHDMI UDMA2 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB XBoxHDMI UDMA2 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB XBoxHDMI UDMA4 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB XBoxHDMI UDMA4 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB XBoxHDMI UDMA5 (256kb/512kb/1024kb) (noDVD/yesDVD) EvoX Titan 128MB XBoxHDMI UDMA5 1.6 (256kb/512kb/1024kb) (noDVD/yesDVD) ******************************************************************************* Some infos about the patches I used: Titan Patch Version: 1.1.0 MakeMHz XBoxHDMI Patch Version: 1.4.3 MakeMHz HDplus Patch Version: 1.0.2 MakeMHz EvoX 128MB Ram Patch Version: 1.0.0* *Could also be v1.0.1 how ever, it's the latest m8plus_true_128MB_fixed.ips. ******************************************************************************* All these bios'es are sorted* and ready to use with XBlastOS or any other flasher which requires that the bios is named bios.bin which has to be in C:\bios (C:\bios\bios.bin). Note: YD = yesDVD and ND = noDVD*. (*Yes you can still boot/cold boot any DVD you like with it!) All these files are also packed as bios.rar files using winrar 3.0. So you could unpack these with UnleashX etc.. (Only of interest if you go to use these of an installer). That lead me to one thing. If you are one of the last ones who creates installer, feel free to use these files on your disc. ******************************************************************************* Credits and a HUGE thanks for the patches fly out to: MakeMHz and Gaasedelen. And also a HUGE thanks to Donnie-Burger for testing. ******************************************************************************* And don't forget to suppport the Devs! Buy'em some coffee because nothing works without coffee! Visit : https://github.com/gaasedelen/titan https://github.com/MakeMHz ******************************************************************************* Download Folders: Mega : https://mega.nz/folder/JFlR2Q5C#lxK9TfF_sgGxl2gPI4uqIw 1fichier : https://1fichier.com/dir/cdrhapgD ******************************************************************************* PEACE! EDIT: How to update your ram on a XBox 1.6/1.6b :

I'm searching for a firmware dump of the original SST 39LF020A from the LG-GDR-8163B to get the drive back up and running. Some how the flash with the "8050L.dld" went wrong under DOS and now the drive didn't get recognized in Windows or DOS (And the drive LED is always on). How ever, if someone has a working flashable dump of the SST 39LF020A with the XBox firmware would also be ok (Not to sure if i could flash that 8050L.dld file to the SST so, yeah.....) . Richt now I have desoldered that little b1tch and soldered it on the pcb for my flasher..... And I also found this post : https://jestineyong.com/obtaining-eeprom-bios-firmware-for-deadflashed-lg-gdr8163b-dvd-rom-drive/ but sadly no firmware bin attached there.

I just got hold of an Xbox with a RAM upgrade. Opening the machine reveals traces of a modchip. The LPC pin header is installed and theD0 has solder leftovers from what I can only guess is a wire to ground. But as there is no modchip so the TSOP must have been flashed. The R7D1, R7D2 and R7D10 pads are also shorted. Booting the box shows what appears to be the stock flubber animation. It stutters a little and just before ending shows Xecutor2 with white letters at the bottom. Booting with no HDD gives this error message overview: What am I looking at here?

My dashboard is the evoX, and i see that there is a Bios flash option there but on console modding they reccomend to use the xblast app. What's the difference? Also, i have an IDE HDD installed, anf from what i've read Cerbios udma 5 (and 6 but i'm not planning to install that version because i'm not doing dual hdd) needs an 80 pin ide connector. At this point i could upgrade to a SATA HDD 500gb with a startech ide sata adapter. There are precautions that i need to take firstly? Like, doing some sort of backup. In the section where bios flash is i don't see that backup option so maybe it's commented out with a # in che evox ini file. Also, the HDD is locked and has C E F X Y Z partitions on it.

Hey guys, So I have a project where I was able to come in possession of what im assuming to be a original Xbox test kit motherboard. The reason I say this is because it is an xbox motherboard with an MCPX X2 as appose to the X3 and yet it only has 64mb of ram soldered to it. It also looks like one of the previous owners tried to run Hexen and flash a retail bios on it since the solder points have been connected. Since (I'm assuming) it has a retail bios loaded on it it wont boot due to the lack of hidden boot sector in the X2. Ive finally fixed some OpenXeniums ive been working on so I have access to a couple modchips that can fit 1mb bioses in them. I am wondering, with the lack of 128mb of ram on the board, does anyone know if the development bioses will still boot to a screen showing something at least like the startup animation? I would like to see if the board is at least still functional with a proper bios and not completely nuked since it is currently in a state of FRAG that I hope is due to a retail BIOS being flashed on there. Thanks

Has anyone seen this? After talking to a well known scene member he says its legit. up to 8tb hdd and .iso supported. From xbox scene forums: "This is a new custom bios with all existing and new features implemented by the team.While we may share some similarities that can be found in bioses such as config loading, custom colors etc, our solution will be different compared to all existing solutions.In addition new tools will also be released to take advantage of some of the features we have implemented.With our custom LBA support we now support hdds up to 8TB in storage size.No more 2.2tb limitations and file corruption.***8TB size limit may be expanded upon again in the futureMore info will be made available in due time Everyone loves a little ISO in their life. So why not add it natively into our bios.No more patching Bioses with hacky ASM, Diskutilities, Dashloader or Nkpatcher.With Cerbios just boot your console select your favorite game and enjoy endless hours of fun.Existing attach.xbe compatible.Check out the videos below of two problematic games working flawlessly as ISO and on 128mb hardware using Cerbios.https://emalm.com/?v=WU9GVhttps://emalm.com/?v=RNwC3But why should I use ISOs over HDD dumps?Well with our custom LBA support for HDD up to 8TB there is no excuse about not having enough space.ISOs do not have file length limitation like some HDD rip games do, so no patching or truncating of file names is required.All DRM checks pass as ISO (Harry Potter).More info TBA" Cerbios Alpha V1.zip

Hello guys, hope you are all fine i am here for some help from you guys in terms of my old xbox from 2003. It has a modchip see below Picture from the complete mainboard As far as i see it runs an old xecuter 2 bios with evolutionX dashboard. I replaced the capacitor for the clock and the thermal paste already, but i wanted to upgrade the 100GB IDE HDD to a bigger one. Saw that there is the cerbios bios, which is currently the way to go. I am familiar with modding/flashing consoles, but never did something on the OG xbox. So my question is, which bios, installer cd ect. i need to flash this xbox. Also question from my side, i heard that upgrading to an S-ATA makes the xbox sometimes freezing, is that true? Thank you very much

Dear all, Sorry if asking a stupid question again ... Is their any chance to downgrade the SmartOS Bios (Firmware) from 3408 to 3339 ??? I also had the issue that a lot of "Your BIOS (Cerbios etc) does not match the Hardware" pops up for many BIOSs tried to boot. No indBIOS or Executer BIOS is working for me ... and even Cerbios is booting only with Cerbios 2.3.2 UMDA2 version. I use a SmartXX LT OPX Mod Chip in a XBox v1.6 Hardware. The Mod Chip was already flashed with a higher SmartOS Version than 3339 ... So i tried the newest available first ... Thanks

Hi, need a bios ID for all cerbios version for XBMC and EVOX dash, it's possible?

Hi everyone, I recently purchased my xbox OG, I opened it, cleaned it and replaced the thermal paste. The xbox reads burned games and I noticed it probably has a modchip and a single cable soldered to the motherboard. I would like to ask you kindly, which chip is this exactly? I would like to replace the hard disk with a larger one, since it still has the original one and I would like to be able to play games directly from it, to safeguard the DVD player (a Samsung). How can I proceed? Is it possible to install a bios mod and a dash mod? My xbox still has the original Microsoft dashboard. I thank everyone and apologize for my bad English Link to image gallery https://postimg.cc/gallery/cSfvKk9

Just picked up a really clean console from Goodwill with a well installed xecuter 2.6. Unfortunately I can’t get anywhere with it. Stock dash will not load when chip is off. Throws an error 16. I’ve tried locked and unlocked. Neither get passed error screen. With the chip on and in bank 2, it will boot in flashbios 3.0.3, but will not accept a bios in any way. There are two that appear to be saved on the HDD also. Every way I’ve tried so far either fails or says “bios update found… Halting!” And then nothing. Chip protection is off during all of this also

Do I have to flash the TSOP or is it a case of having a fake chip and is not flashable?

Hi! I've had this xbox since childhood, my dad bought it modded 20 years ago and he then upgraded the hdd and dvd drive. Now i have no idea on what modchip this is, i'd like to start fresh with this xbox, remove all the ancient media player stuff my dad put on it, and just play games. If someone knows what this is i'd really appreciate it. My idea was to remove this modchip and softmod it, upgrade the bios, and the hdd. The issue is that I dont know if it's possible to just remove this thing. Will it still boot? Even with the custom hdd? If possible i'd also consider keeping it, if i can upgrade bios and hdd. I'll follow the easiest route. Thank you in advance, all the help is appreciated! Othern images l: https://postimg.cc/gallery/GGqWxLR

Hello there, I have an old OGXbox rev 1.0 with a homemade modchip with an executer bios (don't know which version as of yet) and the EvolutionX dashboard on a 120GB PATA HDD. I'm gonna put in a new SSD instead, and reinstall everything and possibly flash another custom bios. My question is, which installation disc is most recommended to use? I have HeXen 2018, TruHeXen 2021/2024, OGXbox 1.5.4, 1.9.3, 2.3.2, SlaYers 3.5 etc... And which custom bios is recommended to use? Best regards

Does anyone have a list of BIOS files for the VGA mod? I have the Frosty-The-Snowman X2_5035 BIOS and BIOS boot disk, but I was wondering if there were others.

Hi, So i have installed an old duo x2 modchip in a stock xbox and the loading screen says evox in the corner so i imagine i've done it correctly. I plan to set up a new sata drive using my pc and have researched how to do this. My remaining question is, i want to use cerbios, and fatxplorer wants to know if i'm using cerbios when formatting the new drive. Is there a way for me to update the bios on the modchip to cerbios, without an installation disc? Can this be done with a usb drive or by plugging the xbox directly into my pc via ethernet?

Here you can find a mirror for the latest versions of Cerbios. Cebios folder @ 1fichier: https://1fichier.com/dir/L5ujxA2o Cerbios folder @ Mega: https://mega.nz/folder/lV8gjKYD#z8EfFTnK7bB9UYAzc87ciw For qustions, talk and such please use the topic from@ShinGoutetsu linked below and keep this topic clean. I will post update infos here as soon as a new version become available. And please, no thanks posting here to make it super easy for all to find update infos and links right away without the need to scroll/read 20 pages. If you like to say thanks, please use the thanks button for that. THANK YOU!

Hello, I have an original Xbox (can't determine which version, looks like 1.4 or 1.5) modded with Aladdin Advance. It worked well until today - I decided to update the bios with EvoX D.6 EjectFix (checksum 74c6235497f474bf88b54b3fc52a20b2). Bin file with it was placed on my HDD so I presumed that it's ok to flash it. After flashing, my Xbox turned off and when I turned it on, it startet to FRAG (two green flashes, then green/red flash with no video). What have I done? How I can undone it?

Hi guys now im recently splitting 1.0 bios to 4 banks, i backup bios with evox but gives me 1024 size backup I know that with raincoat it doesnt autosize to 1024kb but the problem i dont know how to use it Many questions... 1 could i split the 1024 bios to 4x 256kb bios? or 2x 512kb ones? 2 can i backup 256kb or 512kb bios size (tsop splitted one) 3 is there any option to have a 256kb backup of 1.0 1.1 bios xbox? last, is there any option or tutorial to get raincoat working? or to make backup with raincoat?