galaxy rooting: TUTORIAL UNBRAND (FLASH) LUMIA DEVICES AND INSTALATION NOKIA CARE SUITE

PREREQUISITES

Download and install Nokia Care Suite PST 5.0.0 (5.4.119.1432).
Download and install Data Package Manager 4.2 (2013.7.5).
Download UserGroupsConfiguration.cfg.
Charge the battery of your Nokia Windows Phone at least 50% of its capacity, for to avoid any problem!

AUTHENTICATION FILE FOR NOKIA CARE SERVERS

For PC with Windows x86 (32 bits)

Copy the file UserGroupsConfiguration.cfg (therefore the decompressed file), in the three following directories / paths:

"C:\Programmes\Nokia\Nokia Care Suite\Data Package Manager\bin" (essential for using Data Package Manager category).
"C:\Programmes\Nokia\Nokia Care Suite\Multi Software Updater 5.0" (not useful for the tutorial, but essential to use the Multi Software Updater 5.0 category).
"C:\Programmes\Nokia\Nokia Care Suite\Product Support Tool For Store 5.0" (not useful for the tutorial, but essential to use the Product Support Tool For Store 5.0 category).

For PC with Windows x64 (64 bits)

Copy the file UserGroupsConfiguration.cfg (therefore the decompressed file), in the three following directories / paths:

"C:\Program Files (x86)\Nokia\Nokia Care Suite\Data Package Manager\bin" (essential for using Data Package Manager category).
"C:\Program Files (x86)\Nokia\Nokia Care Suite\Multi Software Updater 5.0" (not useful for the tutorial, but essential to use the Multi Software Updater 5.0 category).
"C:\Program Files (x86)\Nokia\Nokia Care Suite\Product Support Tool For Store 5.0" (not useful for the tutorial, but essential to use the Product Support Tool For Store 5.0 category).

DOWNLOAD THE PRODUCT CODE

Run "Nokia Care Suite" software and double-click on the "Data Package Manager" category. A superimposed window called "Login to NOL" opens, click on "Work offline". A second window superimposed called "Work offline" opens, click on "Ok".

Data Package Manager finally opens, and in the top left of the window it, click on "File", and on "Work Online". A window called superimposed "Login to NOL" opens, make sure the "Login Group" box matches good to "Nokia Care servers", and click on "Ok". Wait a short time that the software authenticates toNokia Care servers. In proceeding thus, there will be less of chance for that the authentication at NokiaCare servers fails / not succeed.

Fill in the two parameters that are Product Type and Product Code. Click on "Search". Select the file found, and at the bottom right of the window click on "Download Selected". You can click on the "Ongoing Browser Activities" tab, for monitor in detail the progress of the download (download speed, ETA, etc ...). It you remains simply to waiting that the download is completed to up 100%.

FLASH THE PRODUCT CODE

Run "Nokia Care Suite" software (if not already the case), and double-click on the "Product Support Tool For Store 5.0" category. A superimposed window called "Sign in" opens, click on "Work offline" and stay on it!

In top left of the "Product Support Tool For Store - Nokia Care Suite" window, click on "File", and on "Open Product". Find your device (be careful to choose the Product Type that match you), or in the "Filter" box tap on your keyboard the name of your device and select the result (in my case, it is a (RM-821) Nokia Lumia 920). Then click on "Open".

In bottom left of the "Product Support Tool For Store - Nokia Care Suite" window, click on "Programming", and then click on "Recovery".
Click on "Update list". Select the Product Code downloaded. Click on "Start".
Wait a little that the software verifies of data packages integrity, and then it start flashing operation but it will show you an error (it indicates that the application has lost the connection with your device, but this is normal because the phone is not yet connected).

Connect the USB end into the USB port of your PC. Turn off your WP8 Nokia Lumia. Connect the other USB end to the USB port of your WP8 Nokia Lumia. Press both the Power button and the Volume Down button. Once a vibration felt, click on Retry in Recovery window.

if any error message try changing the USB port where your WP8 Nokia Lumia is connected. For example, if it's a USB 3.0 port, try to connect it to a USB 2.0 port

If a message like this during flashing: "You have chosen not assigned product code for this device, do you wish to continue?" This is normal, it just means that the Product Code chosen does not matches with that of the WP8 Nokia Lumia. But do not worry, this is quite normal. Click on OK.