Case study

fix-whxm4-voice: reconstructing WH-1000XM4 voice-pack upload

fix-whxm4-voice creates replacement voice packs for Sony WH-1000XM4 headphones and uploads them over Bluetooth. Its research notes map the pack's language layout and trace Sony's app through the Airoha FOTA upload flow over Bluetooth Classic RFCOMM. The tool can download stock packs, convert replacement audio and install the result as a selected language.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-06
Evidence class: C2 code & docs, no demo or download

Stars: 8
Last commit: 2026-10-28
Language: Rust
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Observed: Code and documentation observed; no download method or demo found.
Checked: 2026-11-08

How evidence classes are assigned

Requirements & limits

Prerequisites: Sony WH-1000XM4 headphones; the README reports testing on firmware 3.0.1.
Prerequisites: Linux with BlueZ and Nix, or macOS with Xcode command-line tools, Rust and ffmpeg.
Limits: English cannot be replaced in the documented default workflow; the custom pack installs as German by default.
License: MIT licence.

Cite

BibTeX

@misc{fix-whxm4-voice-case,
  title = {{fix-whxm4-voice: reconstructing WH-1000XM4 voice-pack upload}},
  howpublished = {\url{https://github.com/aaron-p1/fix-whxm4-voice}},
  url = {https://github.com/aaron-p1/fix-whxm4-voice},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/fix-whxm4-voice-case/}}
}

Plain text

fix-whxm4-voice: reconstructing WH-1000XM4 voice-pack upload. https://github.com/aaron-p1/fix-whxm4-voice (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/fix-whxm4-voice-case/

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About this entry

The description was reviewed against primary sources.

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Primary sources

README.md GitHub · aaron-p1/fix-whxm4-voice · Revision d9c5138
docs/upload-protocol.md GitHub · aaron-p1/fix-whxm4-voice · Revision d9c5138