Install LineageOS on sunfish
Back to the overviewBasic requirements
- Make sure your computer has
adb
andfastboot
. Setup instructions can be found here. - Enable USB debugging on your device.
Unlocking the bootloader
-
Enable OEM unlock in the Developer options under device Settings, if present.
- Connect the device to your PC via USB.
- On the computer, open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type:
adb reboot bootloader
You can also boot into fastboot mode via a key combination:
- With the device powered off, hold Volume Down + Power.
- Once the device is in fastboot mode, verify your PC finds it by typing:
fastboot devices
Tip: If you seeno permissions fastboot
while on Linux or macOS, try runningfastboot
as root. -
Now type the following command to unlock the bootloader:
fastboot flashing unlock
- If the device doesn’t automatically reboot, reboot it. It should now be unlocked.
- Since the device resets completely, you will need to re-enable USB debugging to continue.
Temporarily booting a custom recovery using fastboot
-
Download a custom recovery - you can download Lineage Recovery. Simply download the latest recovery file, named something like
lineage-18.1-20210410-recovery-sunfish.img
. - Connect your device to your PC via USB.
- On the computer, open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type:
adb reboot bootloader
You can also boot into fastboot mode via a key combination:
- With the device powered off, hold Volume Down + Power.
- Once the device is in fastboot mode, verify your PC finds it by typing:
fastboot devices
Tip: If you seeno permissions fastboot
while on Linux or macOS, try runningfastboot
as root.Tip: Some devices have buggy USB support while in bootloader mode, if you seefastboot
hanging with no output when using commands such asfastboot getvar ..
,fastboot boot ...
,fastboot flash ...
you may want to try a different USB port (preferably a USB Type-A 2.0 one) or a USB hub. - Temporarily flash a recovery on your device by typing:
fastboot flash boot <recovery_filename>.img
Note: Newer fastboot releases dropped legacy A/B support, so it might attempt to flash toboot__a
/boot__b
rather thanboot_a
/boot_b
if you try to flashboot
. In this case, you must manually specify which slot to flash to based on what slot fastboot failed to flash to. For example, if fastboot fails to flash toboot__a
, you must flash toboot_a
.Tip: The file may not be named identically to what stands in this command, so adjust accordingly. - With the device powered off, hold Volume Down + Power. Then use the menu to select Recovery Mode.
Installing LineageOS from recovery
- Download the LineageOS installation package that you would like to install or build the package yourself.
- Optionally, download an application package add-on such as Google Apps (use the
arm64
architecture).
- Optionally, download an application package add-on such as Google Apps (use the
- If you are not in recovery, reboot into recovery:
- With the device powered off, hold Volume Down + Power. Then use the menu to select Recovery Mode.
- Now tap Factory Reset, then Format data / factory reset and continue with the formatting process. This will remove encryption and delete all files stored in the internal storage, as well as format your cache partition (if you have one).
- Return to the main menu.
- Sideload the LineageOS
.zip
package:- On the device, select “Apply Update”, then “Apply from ADB” to begin sideload.
- On the host machine, sideload the package using:
adb sideload filename.zip
.Tip: If the process succeeds the output will stop at 47% and reportadb: failed to read command: Success
.
-
(Optionally): If you want to install any add-ons, click
Advanced
, thenReboot to Recovery
, then when your device reboots, clickApply Update
, thenApply from ADB
, thenadb sideload filename.zip
those packages in sequence.Note: Add-ons aren’t signed with LineageOS’s official key, and therefore when they are sideloaded, Lineage Recovery will present a screen that saysSignature verification failed
, this is expected, please clickContinue
.Note: If you want the Google Apps add-on on your device, you must follow this step before booting into LineageOS for the first time! - Once you have installed everything successfully, click the back arrow in the top left of the screen, then “Reboot system now”.
Get assistance
If you have any questions or get stuck on any of the steps, feel free to ask on our subreddit or in #LineageOS on freenode.