= Build and Run
:description: How to download and install Spectrum OS.
:page-nav_order: 2
:page-has_children: true
:page-has_toc: false

// SPDX-FileCopyrightText: 2022 Unikie
// SPDX-License-Identifier: GFDL-1.3-no-invariants-or-later OR CC-BY-SA-4.0


To start working with Spectrum, you need:

* xref:../installation/binary-cache.adoc[Set up the binary cache] to speed up the build process.
* xref:../installation/getting-spectrum.adoc[Build Spectrum] from the source.
* xref:../installation/b4.adoc[Install and configure the b4 utility] to be able to work with patches.

TIP: Currently, Spectrum works only on x86-64.  AAarch64 support is in
development.  If you have the configuration layer, you can
xref:../development/build-configuration.adoc[configure the build] to be able to
work with specific devices.

== Uninstalling and Updating

Currently, there is no implementation for a software update.

You can replace Spectrum by installing another OS.