Samsung’s Galaxy Nexus will celebrate its fourth birthday this month with an Android 6.0 Marshmallow ROM.

The same developer who successfully ported Lollipop to the device has been working his magic on Marshmallow, and although there is still a lot of work to be done, users can download and install an early ROM now to get a taste of Google’s latest software.

The ROM, named ZMoD after creator Ziyan, includes all of the features you would expect from a pure Marshmallow ROM. The installation process is as simple as that for any other third-party ROM; simply transfer it to your device, and flash it using a custom recovery.

Step-by-step instructions and the files you’ll need can be found in Ziyan’s original thread via the source link below.

Before you rush off to get it, however, there are some things to bear in mind. This ROM is still in the early stages of development, so it’s far from perfect. NFC is broken, and attempting to shoot video will simply crash the Camera app.

If you’re not using your Galaxy Nexus as a daily driver, though, this is a good opportunity to test Marshmallow in its purest form without buying a new Nexus.

• SourceXDA Developers
• ViaPhandroid