[zjwhitehead]

Firmware updates started from Android or iOS previously left the normal flight screen visible. This adds a full-screen update flow with preparation, progress based on bytes successfully written, verification, automatic restart, and readable failure states. After reboot, a brief completion screen shows the running firmware version.

The existing BLE UUIDs, command/sector formats, and acknowledgments are preserved. Screen updates stay in the UI task, progress redraws are limited to 4 Hz, and button gestures are consumed during the update/result screen. A persisted target-slot receipt distinguishes successful startup from rollback.

Screenshots

Rendered from the production LVGL screen at the device's 160 × 128 resolution, enlarged for review.

Light and dark themes, including error states

Validation

• ESP32-S3 PlatformIO firmware build passed on this commit.
• All 37 display/status tests passed, including 24 new light/dark screenshot references.
• All 13 host OTA lifecycle/protocol tests passed, covering retries, disconnects, timeouts, flash/verification failures, restart, and boot results.
• Lint passed for changed production files.
• Hardware flashing and live Android/iOS transfer testing remain outstanding. The installed firmware must already contain this UI to display progress during a transfer.

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