Since the Insider program began, users wanting to get the latest firmware for their devices needed to roll back using the Windows Device Recovery Tool before trying to install a new firmware update on their Lumia 950, Lumia 950 XL, and other Windows 10 Mobile devices enrolled in the Insider program.
Install firmware update on Windows phones
Now the software maker is working on a solution to make it easier for Insiders to receive the firmware update without having to roll back. For now, there is a temporary workaround that Microsoft explains as follow: Microsoft notes that availability of firmware updates will depend upon country or particular mobile operator network, and some Windows 10 Mobile devices mobile devices with specific configurations may receive firmware updates at a later time.
Settings > Updates & security > Phone update > (check for updates). If the device shows a “no updates available” message, your device has the most recently available firmware Of course, this is just a temporary workaround, the company plans to fully integrate firmware updates in the Windows Insider Program without so much friction, but for now these instructions should do the trick. Source Microsoft forum All content on this site is provided with no warranties, express or implied. Use any information at your own risk. Always backup of your device and files before making any changes. Privacy policy info.