If everything went well, you should now have the MCPX rom on your screen. The resulting bios file can now be flashed onto a modchip (I used an aladdin clone with 256KB of flash) before being placed into your xbox and the xbox turned on. Where # = (0 or 1 depending on your MCPX rom version) You now need to get a copy of your xbox's stock bios, and add it into a folder containing mcpx-attack and the cromwell payload. Now that Cromwell is prepped, the next step is to download mcpx-tools, and build mcpx-attack.įollowing this, you should have your cromwell payload and the mcpx-attack tool. This is the new cromwell payload for mcpx-attack. If everything went well, you should end up with a binary file of about 175.6KiB. The next step is to jump to the FF padding after the Cromwell kernel and delete everything after the kernel. Delete the bytes from 0x0 to 0xFFF so that the data at 0x1000 is now at the start of the binary file. See the entry for xboxengromset for a set of ROMs, and a long comment there has instructions about converting them to xemu compatible ISOs using XDVDMulleter Beta 10.2. This is the newly built image, and needs to be hex edited. Next step is to find cromwell.bin in the image folder. This is done by running make at the root of the source code. Writeup of how I did it (credit to DobaMuffin for writing up this method much better than me):įirst step is to make the cromwell bios image. Late to the party but this is how I did it:
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May 2023
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