Resetting a Line 6 POD XT on modern macOS

I have an old Line 6 POD XT that needed a factory reset. The catch: Line 6's software for managing it is 32-bit Intel Mac software from the late 2000s, and it won't launch on anything past macOS Mojave. No official tool, no obvious way in.

So I went digging — pulled apart the old apps, the driver, and the firmware file to figure out how the thing actually talks to a computer. This repo is what came out of that: the notes, the tools I wrote along the way, and — most usefully — the factory reset method that turned out not to need a computer at all.

Just want to factory reset your POD XT?

You don't need any of the software. Do this on the unit itself:

1. Turn the POD XT off.
2. Hold SAVE + all four UP buttons at once.
3. Keep holding and turn it on.
4. Let go when the Line 6 logo appears.
5. Wait for "standard model set loaded."

That's it. Factory presets are back, and anything custom you saved is wiped.

Which units? Confirmed on my POD XT (the "bean"). The POD XT Live and POD XT Pro run the same firmware family and the same SAVE + UP combo is widely reported to work, though I haven't tested them personally. The button layout differs across those units, so "all four UP buttons" maps to whatever the four model/preset UP buttons are on yours.

What's in here

docs/      Write-ups: full analysis, a shorter summary, and a reset guide
tools/     Python scripts for parsing the firmware and poking at the hardware
scripts/   The shell script I used to extract and set up the old software
images/    Photos, including the button combo above

Note: the Line 6 software and firmware files aren't in the repo — they're Line 6's, not mine to redistribute. The scripts expect you to supply your own copies (Line 6 Monkey 1.78.dmg and friends in ~/Downloads). Grab them from Line 6's own software page: https://line6.com/software/ (filter by POD XT). Line 6 Monkey and the legacy drivers are still listed there.

The tools

• tools/line6_analysis_tools.py — parses the .xtf firmware (a Line 6 IFF variant they call L6FF) and inspects the old Mach-O binaries.
• tools/podxt_factory_reset.py — the cleanest of my attempts to trigger a reset over USB. Kept as the reference version; the button combo above is what actually worked in the end.
• tools/attempts/ — the earlier trial-and-error reset scripts (USB, MIDI SysEx, various approaches). None reliably reset the unit, but a couple document the Line 6 SysEx command and USB product IDs, so I left them in.
• scripts/line6_extraction_script.sh — mounts and unpacks the legacy DMGs into an analysis folder.

What I found

• The POD XT is USB vendor 0x0e41, product 0x5044.
• Firmware (PODxt_3_01.xtf) is an IFF container with an L6FF signature — 394,130 bytes, version 1.0.769.0, firmware 3.01. Twenty small device-info chunks up front, then ~393 KB of actual firmware.
• Line 6 Monkey (the management app) is a 32-bit i386 binary that needs macOS 10.5+ and stops running at 10.15.
• The reset lives in the hardware, not the software — the SAVE + UP combo during power-on does the whole thing.

Poking at it yourself

You'll need pyusb and libusb:

pip3 install pyusb
brew install libusb

Then, with a firmware file of your own:

git clone https://github.com/cmadds/line6-reverse-engineering
cd line6-reverse-engineering
python3 tools/line6_analysis_tools.py path/to/PODxt_3_01.xtf

A word of caution: the original Line 6 software is old, 32-bit, and unsigned. I did the messier parts in a throwaway macOS 10.14 VM rather than on my main machine, and I'd suggest the same.

Docs

• Firmware format (.xtf / L6FF) — how the firmware file is laid out
• Full analysis
• Short summary
• Factory reset guide

Licence

The code and docs here are MIT licensed — use them however you like. This is research and interoperability work, shared in case it helps someone else get old Line 6 gear working again. The reverse engineering was done for interoperability under fair use; the Line 6 software, firmware, and drivers themselves belong to Line 6 / Yamaha and are not distributed here.