Windows 8.1 Offline ISO Installer Leaked!
Update 1: You can only use the offline image directly for clean install if you have a Windows 8.1 Key. Otherwise use this method to offline-update using your Windows 8 Key: mcakins.com
To update to Windows 8.1 normally, you can go to the Windows 8 Store
Then click/tap Update to Windows 8.1
If you face any errors like "Your apps were installed" or you can't find the "Update" tile, you can run cmd in elevated mode and type:
Dism /Online /Cleanup-Image /RestoreHealth
To run cmd in elevated Read more [...]