FFNK0104B FIELD GUIDEFlash & setup ↗

Know what is established

A guide with receipts.

Board documentation, implementation records and device observations answer different questions. This guide keeps them separate.

Read the evidence level

  • Documented capability: an authoritative vendor or chip source establishes support or wiring.
  • Implemented: an app uses the capability. A build proves compilation, not physical behavior.
  • Observed on device: a dated serial or physical check establishes what was actually seen during that run.
  • Explore / UNKNOWN: an idea or unresolved detail that needs a diagnostic or explicit device check.

Repository evidence

Authoritative technical references

Unresolved board details

The physical PCB revision, fitted touch-controller suffix and amplifier part, original factory partition layout, battery calibration and current attached expansion devices remain UNKNOWN. USB touchscreen keyboard input is owner-verified directly on Windows 11. Emoji selection, other HID hosts and Windows App remote-session forwarding remain unverified; custom ML models and deep-sleep wake are not implemented or verified here.

This guide reflects repository evidence through 4 October 2026. When you verify new hardware behavior, update the knowledge files and the relevant app's record before extending a capability claim.