Microsoft released a new cumulative update for Windows 7 called “Convenience Update”. It contains all security and non-security updates from SP1 until April 2016. This Update also makes sense for the Embedded Channel.
Normally the Update doesn’t work for Windows Embedded Standard 7 but we found a way how to do the installation anyway. This Blog post shows you how to install this Update. This might not be supported by Microsoft!

Download Update for Windows 7 (KB3020369)

https://www.microsoft.com/en-us/download/details.aspx?id=46827

Install KB3020369 with double click:

Install KB3125574 by using DISM

First download the Update KB3125574 (.msu file) from here: http://catalog.update.microsoft.com/v7/site/Search.aspx?q=3125574

Please extract the Windows6.1-KB3125574-v4-x86.cab file from the .msu file.

Open CMD.exe as an administrator:

Type in the following command:

dism /Online /Add-Package /PackagePath:C:\Users\Elbacom\Desktop\NAME.cab

After installing confirm with “Y” for “Yes”:

After the automatic restart your device is updated.