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Windows Guide :
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according to Install /e/OS on a Fairphone The Fairphone (Gen. 6) - “FP6”
If you plan to relock the bootloader after the installlation
(only available with Official version)
Most important thing to take care about is the Stock OS “android Security Patch Level” already installed on your device before you start the process.
- You will find this information in :
settings --> about phone --> android version 15 --> android security updateIt must be OLDER than the “android Security Patch Level” included in the /e/ build you want to install, otherwise you risk to change your device into Brick.
- you will find this information on the install instructions page for you device if your device is supported by /e/
- or on the release article about the version you want to install if you device have no instructions page:
the title of the article need to match both “/e/OS version” and “android level”,
currently "e-3.2-a15"
Releases · e / os / 
Releases · GitLab
more detailled explications here : (answered) Install /e/ on FP5 with newer Security Patches
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Get the Unlock code from Fairphone before proceeding with the next steps
on your device, enable USB debugging and allow OEM unlocking .
On your PC, install Git-bash, and confirm all preselected options.
download the “platform-tools for windows”, and just extract the .ZIP, not more.
open the newly created “platform-tools” folder in your file manager, then
- use the right clic of your mouse, and choose
open Git Bash here.you will get something like :
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Reboot the device to bootloader mode with the command
adb reboot bootloader,
or with the device powered off - hold Volume Down + Power
- Ask for unlock by copy this command and paste it in the terminal :
.\fastboot flashing unlock
- Approve with volume + then power
- The device proceed with a factory reset, and automatically reboots
Reboot again into bootloader
- Unlock critical by copy this command and paste it in the terminal :
.\fastboot flashing unlock_critical
- Approve with volume + then powe r
- The device proceeds with a factory reset, and automatically reboots
the Bootloader is now unlocked
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Again reboot the device into bootloader mode.
on your PC, take latest /e/OS official FP6 download and just extract it, not more.
From the newly created folder
/IMG-e-3.2-a15-20251022539003-official-FP6,
right clic with your mouse, and choose
open Git Bash here.copy this command and paste it in the git-bash terminal :
chmod +x flash_FP6_factory.sh && ./flash_FP6_factory.sh
you will get something like :
you are done with installing /e/OS
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Finaly,
only if the android security update in the previously installed Stock OS was older
than the android security update included in the /e/ build you want to install
you will be abble to relock the bootloader according to instructions at the bottom of the device install page (only available with Official version)
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[Solved] Windows does not see my phone in Fastboot mode because needed drivers are not correctly installed
if not properly "installed in your path” as explained in Installing adb and fastboot on Windows PC , simply add .\ at the beginning of all your adb or fastboot commands
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