OK. This is how to install Windows RT 8.1 on the Surface RT. 1. Google 'DRIVERS FOR SURFACE RT ONLY___MICROSOFT WINDOWS RT 8 1 WITH OFFICE 2013 RT RTM WOA ENGLISH DVD-WZT' and use a torrent program to download. 2. While that's downloading you need to get your current Windows RT 8.0 product key from your RT. Go here ' http://forum.xda-developers.com/showthread.php?t=2442791 ' and create the .bat file. Easy copy and paste. 3. Create a Windows RT 8.0 recovery USB drive in case anything goes wrong. Type recovery from the Start screen. You will need at least a 4GB USB stick. 4. Run the .bat file and copy down your product key. 5. Once the download finishes copy it to your RT if its not already there and run the .iso file. This mounts it as a CD-ROM drive. 6. Run setup.exe and use the product key from the .txt file in the torrent. Your one doesn't work in the installation. Currently setup only gives you the option to keep files or not. Some have found success with editing a cfg file in the iso and Im not sure if that will work on the RT. Someone give it a go? I found a lot of settings did move over just using the keep files option. A clean install is always better in my option. 7. After that just wait for it to install. Doesn't take very long and once installed go to the activate screen and enter your own product key. It should activate no problem. 8. Install windows updates to get rid of the one device not installed in Device manager. 9. Download apps and enjoy 8.1. Think Ive covered everything. Let me know if anything needs adding.