Firmware Dongle v7

Dongle firmware v7

Released	2026-05
Status	Superseded by v9
Pairs with receiver	v9+
Predecessor	v6
Notable	Sub-second telemetry — rxupd push instead of waiting for the 1 Hz aggregate.

Downloads

File	Purpose	Download
os4_dongle_v7.bin	App partition.	Download
os4_dongle_v7.bootloader.bin	Chip bootloader.	Download
os4_dongle_v7.partitions.bin	Partition table.	Download
os4_dongle_v7.boot_app0.bin	OTA "next-app" pointer.	Download

Release notes

Push-on-arrival receiver telemetry.

• Each successful ACK-payload status update now emits a single-line {"type":"rxupd", ...} JSON to the host the moment it arrives, rather than waiting for the per-second aggregate. Status-to-host latency drops from "0..1000 ms (1 Hz tick)" to "tens of ms" (RF retry window + USB-CDC).
• The per-second status JSON is unchanged and still emitted — it covers slow-changing housekeeping (queue depth, fw, channel, aggregate latency) and acts as a heartbeat for the host so dropped rxupd lines self-heal within a second.

Upgrade notes

• No wire-protocol break.
• The host's BYHProtocolHandler consumes both rxupd and the aggregate status frame transparently — older daemons that don't recognize rxupd simply ignore it and keep using the 1 Hz aggregate.

How to flash

• Flashing a dongle.