LineageOS has announced the initial release of version 24.0, bringing the community-maintained mobile operating system onto an Android 17 base and introducing browser-based tools for several common installation methods. Builds will begin for an initial group of supported devices, with more to follow as maintainers satisfy the project's requirements.

The project says the 24.0 branch has reached feature and stability parity with version 23.2. Its developers rebased LineageOS changes after Android 17 was released in June and described the process as faster than expected, crediting earlier work adapting to substantial upstream refactoring. Core applications have also continued moving toward Google's Material Design 3 Expressive interface system.

A prominent addition is a set of flashing tools at flash.lineageos.org. They use WebUSB to communicate with compatible phones from a browser, reducing the need to install separate desktop utilities for supported procedures. LineageOS presents the tools as an optional route rather than a replacement for its device-specific wiki. Compatibility depends on the phone, browser, desktop operating system and USB connection.

The project cautions users to back up important data, select the correct device and files, and follow the displayed instructions because installing custom software can render a device unusable or erase data when performed incorrectly. Established installation and upgrade guides remain the supported default. Users moving from an official build generally do not need to wipe their devices unless an individual device page requires it, while users coming from unofficial builds are directed through the full installation process.

LineageOS is also drawing a firmer boundary around older Linux kernels. Devices based on kernel versions 4.4 and 4.9 may have been ported experimentally to newer branches, but the project will accept official submissions for those devices only on LineageOS 22.2. It said maintaining the extensive compatibility work needed to carry those kernels forward had become too difficult. Version 22.2 will continue receiving monthly merged security patches while Google distributes Android 15 security bulletins.

For the 23.2 and 24.0 branches, the project says it is limiting shipped kernels to those with direct eBPF backports, builds that no longer depend on GCC, and other required backported features. Contributors are also developing shared system-on-chip kernels and common compatibility shims to reduce duplicated device-maintenance work.

The release arrives shortly before LineageOS's tenth anniversary on December 24. Alongside the operating-system work, the project reported new continuous-integration voting and artifact generation for application repositories, plus an accessibility audit of its installation flow and application suite. Some recovery navigation and interface changes have already followed from that review.