Most of us are aware of Windows 10 MobileInsider Preview (previously known as Windows 10Technical Preview) build which is available for free download to public. Microsoft has released the first testing build of Windows 10 Insider Preview for phones and its available for free download to public.

Windows Insider 2015.429.1747.169 - A tool to help Windows Insiders get the latest operating system updates directly onto their phones. Become an Insider: be one of the first to explore new Windows features for you and your business or use the latest Windows SDK to build great apps.

In this blog post, we are going to provide an ultimate guide of step-by-step help on how to install Windows 10 Mobile Insider Preview on your Nokia/Microsoft Lumia 1520. The guide is based on our expert advice and reviews made on Windows 10 Mobile Insider Preview on Nokia/Microsoft Lumia 1520.

Windows 10 won’t launch until later this year but you can already try it out on your Nokia/Microsoft Lumia 1520 smartphone. Here’s how to install the Windows 10 Insider Preview on your Nokia/Microsoft Lumia 1520 phone.

Step-by-Step guide for downloading & installing Windows 10 Mobile Insider Preview on your Nokia/Microsoft Lumia 1520 | How to Download & Install Windows 10 Mobile Insider Preview on my Lumia 1520 | Download & Install Windows 10 Mobile Insider Preview | Nokia/Microsoft Lumia 1520 Windows 10 Installation

This time Microsoft has decided to provide same core platform (UI, features, etc) of Windows 10 to computers, tablets and phones, so you’ll notice many similarities between Windows 10 Insider Preview for computers and your Nokia/Microsoft Lumia 1520 mobile phone.

If you are ready to test Windows 10 Insider Preview in your Nokia/Microsoft Lumia 1520 Windows Phone, check out following steps:

Step #1: Check for the Compatibility of you Nokia/Microsoft Lumia 1520

This preview build of Windows 10 for phones can be installed in a few selected Lumia 1520 phones only. Check out following topic to learn which mobile phones are supported by Windows 10 Insider Preview: List of Lumia 1520 Mobile phones supported for Windows 10 Insider Preview.

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So if you have a supported Nokia/Microsoft Lumia 1520 mobile phone, you can install and test Windows 10 Insider Preview build. Support for more phones will be added in future builds.

One more thing to keep in mind! Your Nokia/Microsoft Lumia 1520 mobile phone must have at least 8 GB of free storage and Windows Phone 8.1 should be installed on the phone.

Check out how to install Windows Phone 8.1 on your Nokia/Microsoft Lumia 1520 here.

Step #2: Join Windows Insider Program:

If your Nokia/Microsoft Lumia 1520 Windows phone is on the supported phones list, you can download and install Windows 10 Insider Preview build by first joining Windows Insider program: Join Windows Insider Program

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If you joined Windows Insider program at the time of downloading Windows 10 Insider Preview build for computers, you don’t to join it again. You can sign in using the same Microsoft account.

Step #3: Register your Lumia 1520 Phone to Receive Windows 10 Build as OTA Update

After joining Windows Insider program, you’ll need to download and install Windows Insider app in your Nokia/Microsoft Lumia 1520 phone using any of following links:

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Alternatively, you can also install it by searching for Windows Insider app using Store in your Nokia/Microsoft Lumia 1520 Windows phone.

Step #4: Download Windows 10 Insider Preview for Lumia 1520 Phones

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After installing Windows Insider app, open the app and sign in using same Microsoft account. You’ll see Windows 10 Insider Preview download and installation instructions, just follow them. Your Nokia/Microsoft Lumia 1520 Windows phone might restart several times to complete Windows 10 Insider Preview installation.

Once installed, launch the app and select the ‘get preview builds’ option.
You’ll need to enroll on the Windows Insider programme to get preview builds of the software and you have two options, Insider Slow or Insider Fast.
Select the one you prefer and hit the arrow button at the bottom of the screen.
Before you can install Windows 10 on your Nokia/Microsoft Lumia 1520 phone you have to accept the terms and conditions of the Insider Programme. Most importantly it could void your warranty and as we mentioned it could be buggy making your device unusable in some ways.
We don’t advice installing it on your main phone. If the device is your main phone and you really want to install Windows 10, opt for the Slow Insider option to ensure a more stable build.
Once you’ve accepted the terms, simply head to the ‘phone update’ section of the system settings and hit the ‘check for updates’ button.
Once the update has downloaded and installed, your Nokia/Microsoft Lumia 1520 phone will reboot and migrate some data. You’ll then be given a ‘success’ message but you’re not quite done. As it says, you can leave the phone plugged into the mains and let it do the rest or head to the Insider app to finish the upgrade.

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So . . .

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Please keep in mind that Windows 10 Insider Preview for phones is a testing build and you might face bugs and issues after installing it. So install it if you feel you are ready for it. Do let us know, whether you found these tips useful?