The update is hardly substantial and in fact Microsoft has not even revealed a changelog, which suggests the changes are merely in improving performance, squashing bugs, and patching any security holes.
Upgrade Advisor is a stablemate of Get Windows 10, the PC based app launched by Microsoft that tells users of older Windows builds whether they can upgrade to Windows 10.
While Upgrade Advisor is meant to help customers determine if they can upgrade to Windows 10 Mobile or not, it is arguable that it is a pointless service.
There are so few devices eligible for the upgrade from Windows Phone 8.1 to Windows 10 Mobile that most users should already know if they are in line for an update or not. Microsoft has already detailed which smartphones will get Windows 10 Mobile, and today's update to Upgrade Advisor does not come with any new handset additions.
“The Windows 10 Mobile Upgrade Advisor app helps you find out if your Windows Phone 8.1 phone is eligible to install the upgrade to Windows 10 Mobile. It can also help free up space on your phone so you're ready to install the upgrade. When you open the app, it checks your phone and lets you know if it's eligible to install the upgrade, if an update is required before you can install the upgrade, or if your phone can't be upgraded.”
There is probably more worth in the app as a tool to free up space on a device in preparation for the Windows 10 Mobile upgrade. If your handset is eligible for the latest mobile platform from Microsoft, then it may be worth download Upgrade Advisor for this purpose.
Whether the app is needed or not, it is good that Microsoft is supporting it with updates, even if they are only minor patches. The download can be grabbed through the Windows Store.
SOURCE: Windows Store