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A hobbyist writing at kennedn.com says they completed an Xbox 360 modchip project in 2026, nine years after buying a Matrix CoolRunner Rev D. They attribute the renewed attempt to inexpensive Raspberry Pi Pico-based tools that simplified NAND access and programming; the post describes the security-bypass technique but does not provide independent verification of the result.
A hobbyist writing at kennedn.com says they completed an Xbox 360 modchip project in 2026, nine years after buying a Matrix CoolRunner Rev D and shelving an earlier attempt. The account credits lower-cost Raspberry Pi Pico tools with making console memory access and modchip programming easier, and describes a hardware fault-injection method used to circumvent part of the Xbox 360’s boot security.
The writer says the CoolRunner, a type of glitching modchip, was purchased in 2017. The device is designed to send a brief electrical pulse to the console. The post explains that the Xbox 360’s security begins with code embedded in the CPU, known as 1BL, which checks the signature of the next bootloader stage. The writer says that architecture made ordinary software-based routes to running unsigned code difficult.
The account describes fault injection as a way around that barrier: researchers found that rapidly changing the CPU reset signal could cause an instruction to execute incorrectly rather than simply resetting the processor. In the reported technique, this can interfere with a register move used in signature verification. The post presents this as the technical basis for gaining code execution, not as a software vulnerability that can be triggered without physical access to the console.
The writer says the 2017 effort stalled after an attempt to build a NAND and JTAG programmer using an old computer’s parallel port. In 2026, they used a Raspberry Pi Pico running PicoFlasher to access the console’s NAND, then used Pico-dirtyJTAG to program the CoolRunner. The post says the NAND dump took seconds with the Pico-based setup, compared with an estimated 30 minutes for the earlier homemade approach. These timings are the writer’s account, not independently tested measurements.
How Pico Tools Changed the Attempt
The story illustrates how accessible microcontrollers can lower the equipment and setup barrier for some hardware-security research and console modification. A task the writer says previously depended on a difficult, improvised programmer was completed with a Raspberry Pi Pico and software tools designed for the work.
The broader security point in the post is that stronger software protections do not eliminate every attack surface. Fault injection targets the physical conditions in which a processor operates, rather than finding a conventional flaw in an application. The author connects the Xbox 360 method to other reported fault-injection research involving devices such as the ESP32, AirTags and the Nintendo Switch. Those examples are cited by the author as context; they do not establish that every device is vulnerable to the same method.
For readers, the account is also a practical example of how long-lived hobby projects can become more feasible as tools improve. It does not show that the Xbox 360’s security was defeated remotely or that the process is simple for an untrained user: the described work involves physical access, soldering, console-specific connections and specialist software.
Raspberry Pi Pico microcontroller kit
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From 2017 Hardware to Pico
The Xbox 360 was designed with a chain of boot stages that verify code as the system starts. According to the post, the first stage, 1BL, is built into the CPU and checks the next stage against Microsoft’s signature. Each later stage adds protections, making a failure early in the sequence especially useful to someone trying to run code that Microsoft did not approve.
The account identifies the Matrix CoolRunner Rev D as the glitching chip at the center of the project. It says the chip’s role is to generate a pulse of about 100 nanoseconds. That is the author’s description of the hardware and its purpose; the post does not offer a new lab study of the console’s security.
The writer contrasts the first attempt with tools available in 2026. The Raspberry Pi Pico was released in 2021, and the post points to its programmable input/output blocks as useful for precise timing. The author says a Pico can also act as a NAND and JTAG programmer using purpose-built software, replacing some of the custom equipment that made the earlier attempt difficult.
“It took me nine years to hack my Xbox 360”
— The author of the kennedn.com report
What the Account Does Not Verify
The report is a first-person account and does not include independent confirmation that the console was successfully modified or a detailed demonstration of the resulting system. It also does not specify the Xbox 360 model, dashboard or hardware revision involved, which can affect the relevance of console-modding procedures.
The post describes the fault-injection principle and names the tools used, but the supplied material does not establish how reliably the method works across different consoles, whether the setup can be reproduced by other users, or what functions were tested after the modification. The writer’s comparison of operation times is not accompanied by a controlled test or a stated measurement protocol.
The report also does not discuss the legal status of modifying a console in the writer’s jurisdiction, the terms applicable to any software involved, or possible consequences for online services. Those issues should not be inferred from the technical account.
Further Proof and Project Details
The post presents the completed attempt as a personal project rather than announcing a product, security advisory or formal research paper. No follow-up testing, independent replication or response from Microsoft is included in the supplied account. The next useful evidence would be additional technical documentation or third-party confirmation showing the console configuration, the outcome of the modification and the steps that were verified.
Until then, the clearest confirmed point is what the writer says they did: revive a nine-year-old project and use Pico-based tools for console access and programmer setup. Whether the same approach works consistently across Xbox 360 variants remains open.
Key Questions
What happened in the nine-year Xbox 360 project?
The author of kennedn.com says they completed a modchip project in 2026 after buying a Matrix CoolRunner Rev D in 2017 and abandoning an earlier attempt.
What does the CoolRunner do?
The post describes the Matrix CoolRunner Rev D as a glitching modchip that sends a brief electrical pulse to the console. Fault injection can cause a processor instruction to behave incorrectly under particular conditions.
How did the Raspberry Pi Pico help?
The writer says a Pico running PicoFlasher was used to access the Xbox 360’s NAND, and a Pico running Pico-dirtyJTAG was used to program the CoolRunner. The account says the memory dump took seconds, but this has not been independently measured.
Has the reported result been independently verified?
No independent verification is included in the supplied report. The account does not provide enough information to establish how the method performs across different Xbox 360 models or configurations.
Source: hn
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