New Microsoft tool instantly brings certain WP 8.1 and Windows 10 Mobile phones up-to-date
So Microsoft has developed a new tool called Over-the-cable Updater which will load the latest version of Windows 10 Mobile on eligible Windows Phone 8.1 and Windows 10 Mobile models. This new tool is the only way for users to avoid having to install all of the updates they missed before bringing their phone completely up-to-date.
The tool requires a connection to a Windows PC, and if the handset is locked with a PIN code, the user must unlock it before using the OTC Updater. The device being updated also needs to have the airplane mode enabled. To download the tool, click on the sourcelink.
source: OTCUpdate via MSPoweruser