Azure Sphere OS update 20.08 now available for compatibility testing

Published Aug 13 2020 03:25 PM 2,465 Views
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The Azure Sphere OS quality update 20.08 is now available for evaluation via the Retail Eval feed. The retail evaluation period provides 14 days for backwards compatibility testing. During this time, please verify that your applications and devices operate properly with this release before it's deployed broadly via the Retail feed. The Retail feed will continue to deliver OS version 20.07 until we publish 20.08.


The 20.08 release includes enhancements and bug fixes in the Azure Sphere OS; it does not include an updated SDK.


The following changes and bug fixes are included:

  • Fixed issue with the system time not being maintained with RTC and battery. 
  • WifiConfig_GetNetworkDiagnostics now returns AuthenticationFailed in a manner consistent with 20.06 and earlier.
  • Networking_GetInterfaceConnectionStatus now more accurately reflects the ConnectedToInternet state.
  • Fixed issue in 20.07 where device recovery would not result in a random MAC address for Ethernet on an Ethernet configured device.


We have also released new guidance to device manufacturers that should improve the stability of device-to-PC connections, e.g. in a manufacturing setting. In particular, we have updated the FTDI EEPROM configuration file in the azure-sphere-hardware-designs repo on GitHub to use 'D2XX Direct' mode instead of Virtual Com Port (VCP) mode. This new file also enables auto-generation of a random serial number, which will enable more reliable and flexible device identification in future releases of the SDK.


For more information

For more information on Azure Sphere OS feeds and setting up an evaluation device group, see Azure Sphere OS feeds.


If you encounter problems

For self-help technical inquiries, please visit Microsoft Q&A or Stack Overflow. If you require technical support and have a support plan, please submit a support ticket in Microsoft Azure Support or work with your Microsoft Technical Account Manager. If you do not have a support plan and require technical support, please explore the Azure support plans.

Version history
Last update:
‎Sep 23 2020 11:48 AM
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