Hi,

Save your Data and do a clean install of the exact same edition of 8.1 as 8 is.

Well, it is here! Final version of Windows 8.1 Free Download Full Version and upgrade your old windows into Windows 8.1 has just gone live for everybody. Here’s everything you need to know.The Windows 8.1 upgrade is only available as a free option from Windows Store to those currently running Windows 8. This guide will show you how to update your Lumia to the latest software version. Updates give you access to new improvements and fixes bugs on your phone. It is recommended to back up your phone before you start this guide.

Download

Windows 8 > 8.1 is a free upgrade released by Microsoft and this is a workaround if you are unable to get it via the Store, etc.

@@@@@@@@@@@@@@@@@@@@@@@@@@

You can download and create your own Windows 8.1 Installation Media to reinstall the Operating System with.

'Create installation media for Windows 8.1'

Windows Phone 8.1 Update 2 is the latest OS update to the Microsoft Windows Phone 8.1 operating system. Internally it is known as GDR2 or general distribution release 2. Update 2 is the second. Now Microsoft has officially released Update 1 for Windows 8.1 users which can be downloaded using Windows Update. Just launch Windows Update and check for new updates and you should get the new Update 1 listed there. Update 1 for Windows 8.1 will be shown as ' KB2919355 ' and as an 'Important - Security update' in Windows Update.

Today, at Build 2014, we had an initial glimpse of the new Windows Phone 8.1 OS. It looks stunning and it’s coming to all Lumia smartphones running Windows Phone 8. Starting this summer, any Lumia device currently running Windows Phone 8 will receive an over-the-air update, receiving these great. Jun 19, 2014  Hello! Two days ago I downloaded the Developer Preview for Windows Phone 8.1. I like the new features but I've been unable to download or update apps since then. The status of the apps is 'Pending' for the whole time. If I click on one of those apps, this message comes: 'Just a little bit. So, after a hard reset everything is finally okay again.

'Download Windows 8.1'

A similar Tutorial which may also assist you

'Create Installation Media for Windows 8.1'

In the first screen of this very simple wizard, you need to choose the following:

Language. English – en-us if you're in the United States.

Edition. Windows 8.1 (Core), Windows 8.1 N, Windows 8.1 Pro, Windows 8.1 Pro N, or Windows 8.1 Single Language.

Architecture. 64-bit (x64 ) or 32-bit (x86).

_______________________________________

'How to Create a Bootable USB or DVD with a Windows 8 or 8.1 ISO'

Warning

T-mobile Windows Phone Update

This will not work to install Windows 8 or 8.1 for UEFI. For that, see this tutorial below instead.
UEFI Bootable USB Flash Drive - Create in Windows

_____________________________________

How to clean install:

'How to Do a Clean Install of Windows 8 or Windows 8.1'

_____________________________________

With Windows 8/8.1 The Product Key on preinstalled Operating Systems (HP, Acer, etc) is embedded in the BIOS in the Motherboard, so that the lost and/or worn C.O.A. Sticker problem is no more.

When you reinstall it will pick up the Product Key and activate the system automatically.

If it does not, follow these steps:

'How to Activate Windows 8 and 8.1 by Phone'

'Get help with activation errors'

'How to activate a Microsoft product by using Microsoft Product Activation Center'

_______________________________________________

If you do wish to/need to keep a record of it:

'Windows 10 Embedded Product Key Tool'

'We’re proud to introduce the immediate release of our newest utility for Windows users: the NeoSmart Technologies Embedded Product Key Tool. Designed for users of Windows 7, Windows 8, and Windows 10, our embedded product key tool will retrieve and display the Windows setup product key embedded in the BIOS or EFI, allowing you to store it for safe-keeping or use it to reinstall Windows with an official Windows setup image.'

You can also use:

'Belarc Advisor - Free Personal PC Audit (Version 8.5c)'

Or:

Windows Update 8.1 Download Offline

Windows Phone Update 8.1 Download

'Product KeyFinder'

Simplify financial management: Sound financial management makes it easy for a business to boost profits and increase capital value. When it comes to fo financial management, Business Cloud Essentials streamlines the process to curtail all financial worries. List of software companies.

Cheers.