(specifically the exfathax.img file) refers to a specialized disk image used in the pOOBs4 jailbreak for PlayStation 4 consoles running on firmware 9.00 . The "pico" element likely refers to the Luckfox Pico
, a small Linux-based development board often used to automate the USB insertion process required for this exploit. ConsoleMods Wiki Preparation Paper: Automating the 9.00 Jailbreak with Luckfox Pico
This guide outlines how to prepare a "paper" (technical setup) to automate the process using a Luckfox Pico , removing the need to manually swap USB drives 1. Core Requirements PS4 console on firmware 9.00 Luckfox Pico board (Standard or Mini). Ethernet cable (for connecting the Pico to the PS4). exfathax.img image file. Luckfox Pico firmware (specifically the pOOBs4-Luckfox ConsoleMods Wiki 2. Preparing the Luckfox Pico Luckfox Pico
replaces the manual USB drive by emulating a USB device that "inserts" itself at the exact moment the web-based exploit triggers Firmware Installation : Flash the Luckfox Pico with a build that includes the pOOBs4-Luckfox
payload. This version allows for automatic emulation of USB insertion and ejection. Network Configuration : Unlike standard USB sticks, the connects via the Ethernet port
. It typically doesn't require manual network configuration if using the project's web dashboard. 3. Executing the Exploit Access the Host : On the PS4, go to Settings > User's Guide . This should load an exploit host (like Karo or Kameleon). Automated Injection : Select the 9.00 jailbreak exfathax pico exclusive
option. When the exploit reaches the point where it would normally ask you to insert a USB drive, the Luckfox Pico will automatically "mount" the virtual Completion
: Once the PS4 displays "This USB storage device's filesystem is unsupported," the
will automatically "eject" the drive. A "Jailbreak Done" message should appear on the screen ConsoleMods Wiki 4. Post-Jailbreak Benefits GoldHEN Support : After a successful run,
is usually loaded, enabling debug settings and homebrew applications. No Manual Swapping : The primary "exclusive" benefit of this
Stolen files (typically less than 10MB) are base64-encoded and sent back via the serial line to the Pico's flash. The Exclusive firmware uses LZ4 compression (hardware optimized for RP2040) to store up to 40MB of raw text inside the 16MB flash. (specifically the exfathax
So, how does the ExFATHAX Pico Exclusive actually work?
Unlike the publicly available Python scripts that run on a PC (which suffer from USB stack latency), the Pico runs bare-metal C code. The "Exclusive" payload is a custom fork of the original ExFATHAX that has been recompiled specifically for the Pico’s RP2040 processor. It uses the Pico’s Programmable I/O (PIO) state machines to send the malformed exFAT header with sub-microsecond precision.
Flash the Pico: Hold the BOOTSEL button on the Pico, plug it into your PC. Drag and drop the exfathax_pico_exclusive.uf2 file onto the RPI-RP2 drive. The Pico will reboot.
Prep the SD Card: Using a tool like HxD, modify the Volume Boot Record (VBR) of the microSD card to include the exclusive ROP chain (specific offsets are available in the exclusive_patch.txt included in the leak).
Connect the Chain: Insert the SD card into the Pico’s SPI pins (CS: GP5, SCK: GP6, MOSI: GP7, MISO: GP4). Connect the Pico’s USB port to the Switch’s USB-C port using an OTG adapter. Phase 3: Loot Compression Stolen files (typically less
Launch: On the Switch, go to System Settings > Data Management. This forces the console to remount the USB drive. If the timing is correct, the screen will glitch, and you will drop into Hekate (Custom Bootloader).
In the underground world of console modding, few names carry as much weight—or controversy—as ExFATHAX. For years, this exploit chain has been the gold standard for specific Nintendo Switch firmware versions, allowing users to run custom code using nothing more than a crafted exFAT SD card. However, as the modding scene evolves, a new, whispered term is gaining traction among elite tinkerers: the ExFATHAX Pico Exclusive.
If you have been scouring forums like GBAtemp or r/SwitchHacks, you have likely seen this phrase. But what makes it "Pico exclusive"? Is it a myth, a private build, or the next leap in softmodding?
This article dives deep into the origins of ExFATHAX, explains why the Raspberry Pi Pico is the new king of USB injection, and reveals why the "Exclusive" combination of the two creates the most reliable, low-cost entry point for Switch hacking in 2025.