Since a universal "Windows RT 8.1 ISO" does not exist, here is how to legally obtain the correct recovery files.
Download the .zip file and extract its contents directly onto a formatted USB drive. 2. For Non-Surface Devices (Lumia, Dell, etc.)
Microsoft provides official recovery images for Surface RT 8.1 via their download center, but they are not called "ISO." They are a set of .zip files containing a ResetConfig.xml and a Recovery folder. Windows Rt 8.1 Iso Download
No. Microsoft never released public ISO downloads for Windows RT. Recovery was always handled via built-in "Refresh" options or specialized recovery images downloaded from the device manufacturer’s support site (not from Microsoft’s public Software Download page).
Before you spend hours hunting down an ISO or recovery USB, ask yourself: Is it worth it? Since a universal "Windows RT 8
If your device is completely unbootable, find the recovery USB creator tool for your specific RT model. For 90% of Surface RT owners, the Microsoft official recovery USB (available via serial number) is the correct answer.
In the evolving landscape of Microsoft operating systems, Windows RT remains one of the most controversial and unique chapters. Released alongside Windows 8 in 2012, Windows RT was designed specifically for devices running on ARM architecture, such as the original Microsoft Surface tablet. For Non-Surface Devices (Lumia, Dell, etc
The enthusiastic community at XDA Developers created a jailbreak tool (called "RT Jailbreak") that allows you to recompile open-source ARM apps (like older versions of Firefox, PuTTY, and 7-Zip) to run on RT. If your goal is to revive the device for niche uses, you are better off following a guide than searching for an ISO.