Related stories: • • • • There's a trick, however, that allows you to download the official Windows 8.1 ISO from Microsoft's servers with your Windows 8 product key. With the Windows 8.1 ISO, you can create DVD or USB media to update a Windows 8 PC to Windows 8.1.

Unfortunately, as Paul Thurrott over at mentions, you can't use the ISO to perform a clean install of Windows 8.1 with a Windows 8 product key. The ISO is still worth having, though, just to be able to bypass the Microsoft Store when upgrading to Windows 8.1 from Windows 8. Here's how to download the official Windows 8.1 ISO: Step 1: Go to Microsoft's page for, then click on the light blue ' Install Windows 8' button. Screenshot by Ed Rhee/CNET.

Download Windows 8.1 Disc Image (ISO File). If you need to install or reinstall Windows 8.1, you can use the tools on this page to create your own installation media using either a USB flash drive or a DVD.

Step 2: Launch the setup file (Windows8-Setup.exe) and enter your Windows 8 product key when prompted. Continue the setup process until it begins downloading Windows 8. Step 3: Close the Windows 8 setup window and confirm that you want to quit the setup. System32 Drivers Pci Sys 512 Ethernet Controller Free Download more. Step 4: Back at the Microsoft, click on the light blue ' Install Windows 8.1' button this time. Step 5: Launch the setup file (WindowsSetupBox.exe), which will begin downloading the Windows 8.1 ISO. Screenshot by Ed Rhee/CNET Step 6: Once the ISO finishes downloading, the installer will take several minutes to check the download and uncompress the install files. When you're prompted to choose an installation option, pick 'Install by creating media.'

Screenshot by Ed Rhee/CNET Step 7: Decide whether you want the installer to create USB flash drive media, or save the ISO file. The Goat In The Chili Patch on this page. Screenshot by Ed Rhee/CNET. If you choose ISO, the ISO file (Windows.iso) will be saved to your PC and you'll be given the option to burn it to DVD.

Once completed, you can actually go back and create the USB flash drive media as well. Just click on the 'Install Windows' link on your Windows desktop. You'll be prompted to choose your installation option again.

Pick 'Install by creating media' again, insert a 4GB or larger USB flash drive, then choose the USB flash drive option. If you have any problems creating the USB flash media, you can still use the to create USB media with the Windows 8.1 ISO.

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