# AOS 3.3.9

### Compatibility <a href="#compatibility" id="compatibility"></a>

This version of AuterionOS comes bundled with the following APX4 release:

{% content-ref url="../../../flight-control/apx4-3.0/apx4-3.0.8" %}
[apx4-3.0.8](https://docs.auterion.com/release-notes/flight-control/apx4-3.0/apx4-3.0.8)
{% endcontent-ref %}

Please use the following version, or newer, of Auterion Mission Control with this version of AOS:

{% content-ref url="../../../auterion-mission-control-release-notes/amc-1.30/amc-1.30.17" %}
[amc-1.30.17](https://docs.auterion.com/release-notes/auterion-mission-control-release-notes/amc-1.30/amc-1.30.17)
{% endcontent-ref %}

### What's new <a href="#what-improved.1" id="what-improved.1"></a>

* Allow manufacturers to override the Skynode default Wifi access point SSID using the AP\_CONFIGURE\_AP\_SSID environment variable
* Allow manufacturers to install default app settings together with the default apps using the Auterion oem tools
* Add option to always use the Skynode serial number for Remote ID generation, even when a Vehicle Serial Number is present, by setting the REMOTEID\_USE\_SKYNODE\_SN environment variable
* Allow disabling Remote ID using a signed token; tokens are generated by Auterion on request
* Change ROS2 middleware to use FastDDS instead of CycloneDDS
* New radio statistics included in Ulog file uploaded to the suite. This will simplify radio troubleshooting
* Disable AuterionOS serial console on production images

### What improved <a href="#what-improved" id="what-improved"></a>

#### Payloads <a href="#payloads-1" id="payloads-1"></a>

* Do not force video streaming frame rate to a fixed value. This can reduce video latency by 30-50ms.
* Fix issue where video was getting recorded correctly on the Sony A7R camera but AMC reported that recording failed

**Sony A7R/ILX**

* Enable exposure control settings also in video mode
* New picture profile setting exposed to AMC
* Read all settings ranges from the camera to avoid trying to change settings that are not available for a specific camera model or in a specific camera state
* New movie recording settings exposed to AMC
* Remove "flash" white balance setting
* Do not allow user to change to manual focus if the lens does not support it
* Limit shutter speed range to 1/4000
* Decouple exposure mode, exposure compensation, ISO, shutter speed, aperture and focus mode settings depending if the camera is in photo or video mode
* Fix SD card status and error reporting
* Fix movie format setting. Previously users could set values that were temporarily not available due to other setting combinations.
* Set AuterionOS date and time to camera during initial connection
* Read focus level from camera to improve the manual focus support
* New Sony 50mm and Samyang 75mm lens support
* Fix issue that would cause Sony camera to stop working if plugged out and back into Skynode via USB
* Fix issue that would cause the Sony camera capture feedback to not work when switching between USB flash drive and camera SD card storage

#### Radios <a href="#radios" id="radios"></a>

* Improve doodle labs radio support. This will allow pairing with doodle labs radios to be faster and more reliable.

#### Others <a href="#others" id="others"></a>

* Fix issue that could happen during photo upload to the suite. This could cause all other features related to the suite to malfunction.
* Fix issue that could cause the AuterionOS web UI to not get updated or to get corrupted when updating from a release with the old web UI
* Fix issue that could cause the FMU hardfault log upload to the suite to fail during AuterionOS bootup
* Improve error messages in AuterionOS update API to report API version incompatibilities
* Fix app remove button and make sure that also app settings are removed. The action could fail randomly.
* Improve error handling during AuterionOS app installations
* Fix issue where AuterionOS could get stuck at boot if a USB flash drive was plugged in during power up
* Fix issue where last digits of the Auterion suite API key were visible in some AuterionOS REST API responses
* Fix issue that caused excessive memory usage by the modem driver in AuterionOS when when modem was not in a configurable state
* Disable app actions in the AuterionOS web UI while the drone is armed
* During skynode soft reboots the USB hub could stop working. Now AuterionOS makes sure the USB hub is alive during every boot up.
* Fix issue where the app update status was not successful although the app installation had succeeded
* Fix issue with modem metrics that could cause the CPU to spike every time AuterionOS requested the metrics from the modem
* Various optimizations related to connection to the suite. The service would use a lot of resources also when the vehicle was not connected to the Internet.