Case study

OpenNord: reconstructing Nord Stage file and USB transfer formats

OpenNord reconstructs Nord Stage program handling and USB transfer in a keyboard companion app. It reads Stage 2, 3 and 4 program files through a shared CBIN container and model codecs, and uses a recovered vendor bulk USB protocol to enumerate devices and transfer programs. Sample readers and a local library support inspection and playback.

Targets: Protocol
Category: Independent reconstruction cases
Relationship: Independent reconstruction project
Sources reviewed: 2026-11-08
Evidence class: C2 code & docs, no demo or download

Stars: 22
Last commit: 2026-11-07
Language: TypeScript
License (GitHub): AGPL-3.0

GitHub data as of 2026-11-10

Copy as Markdown View JSON Cite

Evidence

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

How evidence classes are assigned

Requirements & limits

Prerequisites: Requires compatible Nord Stage files or hardware; USB transfer is available on desktop and supported iPad hardware.
Testing evidence: The author reports Stage 4 decoding and two-way Stage 4 USB transfer validated on hardware; other Nord families remain planned.
Limits: Writing a program overwrites the keyboard slot, so back up the keyboard first.
License: AGPL-3.0-or-later license.

Cite

BibTeX

@misc{opennord-case,
  title = {{OpenNord: reconstructing Nord Stage file and USB transfer formats}},
  howpublished = {\url{https://github.com/simonflore/opennord}},
  url = {https://github.com/simonflore/opennord},
  urldate = {2026-11-08},
  note = {Awesome REA entry: \url{https://awesomerea.org/resources/opennord-case/}}
}

Plain text

OpenNord: reconstructing Nord Stage file and USB transfer formats. https://github.com/simonflore/opennord (accessed 2026-11-08). Awesome REA entry: https://awesomerea.org/resources/opennord-case/

Useful? Star Awesome REA on GitHub2.4k

About this entry

The description was reviewed against primary sources.

Report an outdated entry Suggest a translation fix

Primary sources

README.md GitHub · simonflore/opennord · Revision 19b5f59