Nexus and Pixel devices are usually the first to get the latest version of Android. However, recently Google has made it clear that it will only support the devices which have been launched in the last couple of years. This makes it clear that the device that has been launched before that period will not get any more updates. Now some of the devices that have been launched before this time period are the Nexus 6 and the Nexus 9. We have also known that the latest version of Android has been released by Google recently which is Android 8.0 Oreo and the update is rolling out to the latest Pixel and Nexus devices.
Now, we have already got the confirmation that the Nexus 6 and Nexus 9 will not get the latest update from the company so the only option for these devices is the availability of custom roms. Now, we are happy to report that the Nexus 9 has now received the unofficial build for the LineageOS 15.0 which is based on Android 8.0 Oreo. In terms of the update for the Nexus 9, you should note that this update is in an early development stage and the ROM may not be very stable to use so you should proceed with caution.
In terms of the update for your Nexus 9, you would have already known that this is an update which has to be done manually via a custom recovery which has to be installed on your phone. If you know the risks involved in flashing custom ROMs on your device then we have added all the links to proceed with the installation of LineageOS 15 on your Nexus 9. Also, you should follow our guide to get all the steps that are needed to flash custom ROM via recovery.