# Install LineageOS on Fairphone
## 1. Check your prerequisites on your computer
[ ] adb and fastboot are installed?
[ ] you have downloaded bootimage (img) and LineageOS (zip)?
[ ] you have the unlock code (in case of Fairphone 3)?
[ ] you have a usb cable prepared?
[ ] you are prepared to erase all the data on your fairphone?
## 2. Unlock your fairphone
Unlocking will allow us to overwrite the boot-loader.
1. Navigate to "Settings - About phone"
1. Press 7 times “Build number” to enable Developer mode
1. Navigate to "Settings - System – –
1. Enable USB Debugging
1. In case of Fairphone3:
1. Navigate to "Settings - System – –
1. Enable OEM unlocking with unlock your code
## 3. Connect via usb
For overwriting your fairphones boot-loader we will need connection to your pc.
1. Connect your computer & fairphone via usb
1. On your fairphone allow the usb connection
1. Type `adb devices` on your computer (in case of windows open the terminal in the directory containing adb& fastboot.exe and use the `.\` prefix. The resulting command will be: `.\adb devices` ).
The result should show something like
```
List of devices attached
< SerialNumberOfYourPhone > device
```
## 4. Prepare recovery image installation
The next step is the critical one. If this step goes wrong your fairphone may remain broken. Time to do some checks:
1. Check that your phone has at least 50% battery.
1. Reboot your fairphone to bootloader mode: Type `adb reboot bootloader` on your computer.
1. Fairphone should show the bootloader screen.
1. Type `fastboot devices` on your computer. The result should show something like
```
< SerialNumberOfYourPhone > fastboot
```
1. Check whether your downloaded recovery image is not broken. In case of
1. windows type `Get-FileHash <image_filename.img>` on your computer.
1. linux type `sha256sum <image_filename.img>` on your computer.
1. The result should look like
```
b6494278d0a399547a9344a6018a30b388f71a97ef52989bcdd661002f3a8631 lineage-18.1-20210906-recovery-FP3.img
```
1. Now compare some random parts of the number to the one given on the recovery image download page. Ensure, you are browsing secure with "https".
[<img src="img/sha256.png" width="500" height="250"> ](img/sha256.png )
## 5. Install LinegaeOS recovery image
All checks passed? Then lets do the work:
1. Type on your computer `fastboot oem unlock` .
1. If your fairphone reboots, a `adb reboot bootloader` will bring you back.
1. Install fastboot image
1. in case of Fairphone2 by typing on your computer `fastboot flash recovery <image_filename.img>` (< image_filename.img > is the img-file you have downloaded in 1.).
1. in case of Fairphone3 by typing on your computer `fastboot flash boot <image_filename.img>` (< image_filename.img > is the img-file you have downloaded in 1.).
1. Type on your computer `fastboot oem lock` .
OEM unlocking / locking will erase all data, so we should ensure to do the lock again now.
## 6. Install LineageOS
This step is no more dangerous. You can retry as often you want to. The LineageOs boot-loader will verify your binaries.
1. Reboot your fairphone again to bootloader mode: Type `adb reboot recovery` on your computer.
2. Your fairphone now boots to the new LineageOS recovery image. Then start the recovery mode.
[<img src="img/start.jpg" width="300" height="400"> ](img/start.jpg )[<img src="img/recovery.jpg" width="300" height="400"> ](img/recovery.jpg )
3. Choose Factory Reset - Format Data/Factory Reset
[<img src="img/reset.jpg" width="300" height="400"> ](img/reset.jpg )[<img src="img/format.jpg" width="300" height="400"> ](img/format.jpg )
4. Return to main menu
5. Apply update - Apply from ADB
[<img src="img/apply.jpg" width="300" height="400"> ](img/apply.jpg )[<img src="img/sideload.jpg" width="300" height="400"> ](img/sideload.jpg )
6. Type `adb sideload <lineagos.zip>` on your computer (< lineagos.zip > is the zip-file you have downloaded in 1.).
[<img src="img/done.jpg" width="300" height="400"> ](img/done.jpg )
7. Check whether you see the `Step 2/2` on the bottom of your fairphone.
### 6.1 Optional installation of Google Apps
If you can't abstain from the Google Apps or the Google Play Store there exist packages with various scopes, you will find a package comparison here: [https://github.com/opengapps/opengapps/wiki/Package-Comparison ](https://github.com/opengapps/opengapps/wiki/Package-Comparison ). You have to install Google Aps in front of first the first start wizzard.
1. Download the favored version from [here ](https://opengapps.org/ ).
1. Install the gapps the same way, you installed LineageOs: `adb sideload <gapps.zip>`
## 7. Start LineageOS
First start of your new LineageOS - hurray.
1. Return to main menu
1. Choose Reboot system, then your phone should start with the new LineageOS.
1. Walk through the initial LineageOS setup.
## 8. Download the F-Droid App-Store
For installing more software we recommend F-Droid
1. Use the browser on your Fairphone to download F-Droid: [https://www.f-droid.org/ ](https://www.f-droid.org/ )
1. Visit the download-folder and install F-Droid (accept the warning).
1. Now you can install Apps like DeltaChat, NextCloud, Fennec, Tusky, k9 (...) through the F-Droid Store.
1. Open Fennec and install privacy badger as add-on.
