Warning: The HTC One M9 (GSM) is no longer maintained.
A build guide is available for developers that would like to make private builds, or even restart official support.
Guides
- Installation
- Build for yourself
- Update to a newer build of the same LineageOS version
- Upgrade to a higher version of LineageOS (e.g. lineage-13.0 -> lineage-14.1)
Special boot modes
- Recovery: With the device powered off, hold Volume Down + Power until the bootloader appears, then release the buttons. Use the volume buttons to scroll to “RECOVERY” and press Power to select.
- Bootloader/Fastboot/Download: With the device powered off, hold Volume Down + Power until the bootloader appears, then release the buttons. Use the volume buttons to scroll to “FASTBOOT” and press Power to select.
Known quirks
Find help online
You can find assistance with LineageOS on our subreddit, or in #LineageOS on Libera.Chat.