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# Prepare Installation
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## On your computer
1. Download and install adb & fastboot
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1. Windows
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1. [Download adb & fastboot ](https://developer.android.com/studio/releases/platform-tools )
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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`
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2. Download LineageOS .img and .zip files
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1. For the [Fairphone 2 ](https://download.lineageos.org/FP2 )
1. For the [Fairphone 3 ](https://download.lineageos.org/FP3 )
3. Generate unlockcode
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1. In case of Fairphone 2, it is not necessary
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1. In case of Fairphone 3 & 4:
- Connect your phone with your wifi active
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- Find IMEI number (Settings - About phone)
- Find serial number (Settings - About phone - Model and Hardware)
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- enter [here ](https://www.fairphone.com/en/bootloader-unlocking-code-for-fairphone-3/ ) and get your unlock code.
