Release Notes

New features

• Uplink frame buffer (only for devices equipped with the optional external flash) Uplinks are buffered in flash memory. In case of packet loss, this lets the back-end request the missing frames through the new get buffered uplinks command.
• Reset by magnet action. A RESET command has been added to the actions that can be assigned to the button events in core_buttonX_map paramters in the system group.
• Devnonce cycling. As a protection against replay attacks, LoRaWAN requires the JOIN frame to use a new DevNonce for each Join. For LoRaWAN-only devices, the maximum number of DevNonces (65535 in LoRaWAN 1.0.x) is usually sufficient for the lifetime of the device, and by default the LoRa Basic Modem stack remains stuck at the maximum DeVNonce value. However for the dual network device such as the Combo tracker, a device may need to rejoin more often. When this happens, AT3 1.3 will cycle back the DevNonce to 0 instead of remaining stuck at 65535. The frames will still be blocked by the LoRaWAN Network Server (LNS) network replay protection, but easily unblocked by API. As the application can detect ahead of time that a device is approaching DevNonce exhaustion, such authorisation of cycling can be provided proactively to the LNS.
• Signed firmware for remote upgrades. In support for the new EU security standard EN18031, all remote firmware upgrade now requires signed firmware (.sign extension).
• Firmware update over BLE. In addition to the existing firmware update via USB, it is now possible to upgrade both the application and the BLE firmware through BLE. This is supported by the browser based tool Beehive. This will only work with signed firmware, check that you have the .sign extension.
• Firmware update via LTE. (Experimental only). In this release only CLI trigerred updates are supported.
• Shutdown uplink. In case the device shuts down through user action or in a critical low battery condition, the power manager will keep the network up long enough to send a shutdown notification.

Known-issues

AT3 v1.3.0

No known issue yet