Windows RT 8.1 IR5 Update Kit:
View attachment 5159441
This update kit will download Windows RT 8.1 IR5, download and integrate selected Windows Updates to January 2021, integrate drivers for the selected device and generate an updated installation source ready to be copied to a FAT32 formatted USB drive (8GB minimum) for installation on a supported device.
It's not in any way pretty but does the job and is less painful than dealing with Windows Update on a fresh RT 8.1 install. It will usually work if its not windy outside and you don't look at it while its doing its thing.
The use of this update kit or the media it produces is entirely at your own risk.
The kit is to be run on an x86/x64 PC and not on the target device. On older hardware it can take around one hour including download time on a reasonable connection. I recommend this is extracted to the root of your hard drive, for example "D:\Windows_RT_8.1_IR5_Update_Kit_v1.6\ ". Once the archive is extracted run "Build.cmd" as administrator.
15/01/2021 - Windows_RT_8.1_IR5_Update_Kit_v1.6a.zip - Download
- Includes January 2020 Windows Updates.
17/12/2020 - Windows_RT_8.1_IR5_Update_Kit_v1.6_Appx.zip - Download
- Optional Appx Update Pack for v1.6 and above.
During testing I found that trying to update provisioned apps in Windows RT 8.1 IR5 for
Saudi Arabia, Bulgaria, Germany, Croatia, Hungary, Russia and Slovakia results in the following error:
The ESD files are clean downloads directly from Microsoft and I have no idea what might be causing this, I will try to find what it is but for the moment these languages will be excluded from attempting app updates.
Mirror: https://gofile.io/d/pe3xDR
Old Versions: https://gofile.io/d/4EEQOA