Here is a way to DeBrand / ReInstall (old) ROM to your Lumia 950/950XL
I went back from 10.0.010586.36 to 10.0.010586.0
Booting of your Lumia 950/950XL
To continue this tutorial, it is necessary to start your Lumia 950/950XL in the FFU Download boot. To do so, follow the five steps mentioned below:
- Turn off your Lumia 950/950XL.
- Press and hold the power button to start your Lumia 950/950XL.
When your Lumia 950/950XL starts, it displays the Microsoft logo.
At this instant, release the power button, then press and hold the volume up button. This step should be done quickly.
After a few seconds, an image composed of a white lightning and a white gear wheel appear on the screen of your Lumia 950/950XL.
At this instant, release the volume up button.
Connect your Lumia 950/950XL at your PC, this one should simply detect it.
Installation of the ROM
The most important part of this tutorial will begin, but it is also the most critical.
You are going to use the Windows Phone Image Designer software for flash your Lumia 950/950XL. (downloads below)
Access to the ..\LumiaFlashTools\WPID directory.
Execute the Start.bat file.
The Windows Phone Image Designer window appears and also two batch windows (don't close it, otherwise it will result in also close the software).
Select the Flash a Windows Phone image onto your phone option , and click on the Next button .
As you have connected your Lumia 950/950XL in Microsoft FFU Download Mode at your PC, the software should detect it as x.MSMx.x.x.x where the differents x are variable in according on the connected Lumia 950/950XL.
If your Lumia 950/950XL hasn't been automatically detected by the software, you can click on the refresh button .
Then click on the Change button.
Select the FFU file
Click on the Flash button .
The software then proceeds at flash, in your Lumia 950/950XL, of the ROM that you previously selected.
A few minutes later, the installation process terminates. The software indicates then that the ROM you selected has been installed in your Lumia 950/950XL.
Your Lumia 950/950XL should restart automatically, integrating then the ROM that you just flash him. You can then disconnect him from your PC.
Have fun with it !!!
Windows Phone Image Designer.rar = http://www93.zippyshare.com/v/VKQZRvVC/file.html