Case study

QCYbutMOD: a QCY earbuds client built from reconstructed BLE commands

QCYbutMOD is an Android client built from reverse engineering of the BLE GATT commands used by QCY earbuds with Wuqi WQ7033 and WQ7034 chips. It reads separate earbud and case battery values from characteristic 0008, sends a command to mute firmware voice prompts, and reads back gesture mappings. Device test notes record command acknowledgments and unanswered multipoint queries.

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: 0
Last commit: 2026-11-04
Language: Kotlin
License (GitHub): MIT

GitHub data as of 2026-11-10

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Evidence

Observed: Code, documentation and a download method observed; no demo found.
Checked: 2026-11-09

How evidence classes are assigned

Requirements & limits

Prerequisites: Android 8.0 to 16+ and a supported QCY earbud model using a Wuqi WQ7033 or WQ7034 chip.
Prerequisites: Building from source requires JDK 17 and Android SDK 36 with Build Tools 36.0.0 or newer.
Limits: The author reports that firmware on the tested device did not respond to multipoint queries 0x4D and 0x4F.
License: MIT license.

Cite

BibTeX

@misc{qcybutmod-case,
  title = {{QCYbutMOD: a QCY earbuds client built from reconstructed BLE commands}},
  howpublished = {\url{https://github.com/MrSpy00/QCYbutMOD}},
  url = {https://github.com/MrSpy00/QCYbutMOD},
  urldate = {2026-11-06},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/qcybutmod-case/}}
}

Plain text

QCYbutMOD: a QCY earbuds client built from reconstructed BLE commands. https://github.com/MrSpy00/QCYbutMOD (accessed 2026-11-06). Awesome REA entry: https://awesomerea.org/resources/qcybutmod-case/

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About this entry

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Primary sources

README.md GitHub · MrSpy00/QCYbutMOD · Revision c0a4b2a
ADB_LIVE_TEST_NOTES.md GitHub · MrSpy00/QCYbutMOD · Revision c0a4b2a