# Prepare Installation ## On your computer 1. Download and install adb & fastboot 1. Windows 1. [Download adb & fastboot](https://developer.android.com/studio/releases/platform-tools) 2. It may be necessary to install USB-Drivers by windwos update [see](https://forum.fairphone.com/t/gerat-wird-im-fastboot-mode-nicht-erkannt-os-flashen/42920/2) 1. For Linux do `sudo apt install adb fastboot` 2. Download LineageOS .img and .zip files 1. For the [Fairphone 2](https://download.lineageos.org/FP2) 1. For the [Fairphone 3](https://download.lineageos.org/FP3) 3. Generate unlockcode 1. In case of Fairphone 2, it is not necessary 1. In case of Fairphone 3 & 4: - Connect your phone with your wifi active - Find IMEI number (Settings - About phone) - Find serial number (Settings - About phone - Model and Hardware) - enter [here](https://www.fairphone.com/en/bootloader-unlocking-code-for-fairphone-3/) and get your unlock code.