Install /e/OS on a Gigaset - GS290 GS290

This guide installs /e/OS on your GS290. Read it through once before you start, so you don’t hit surprises partway in. Flashing is done at your own risk: /e/OS builds are provided as best effort, without any guarantee, and the /e/OS project takes no responsibility for the consequences.

Requirements

• Back up your important data to an external storage device — some of the steps below format the phone, wiping any backup left on it.
• Charge your phone above 50%.
• Enable adb and fastboot on your PC — setup instructions.
• Download every file listed in the Downloads section below before you start.
• Use a real data cable — some cables only charge and can’t transfer data.
• Enable USB debugging on your device — instructions.
• Confirm your exact model in the Device Selector: where shown, hover the device name for the supported model number, and check it matches yours exactly.
• Boot the stock OS at least once and check everything works — SMS, calls, and both over WiFi and LTE if available (some devices need VoLTE/VoWiFi used once on stock to provision IMS). Whatever’s broken on stock stays broken on /e/OS.

Downloads for GS290

Each build includes /e/OS Recovery — no separate download needed.

Not sure which one to pick? See official vs. community builds.

Before install

1. Check fastboot version

   You do this by typing the below command in a console app on an adb enabled PC

   fastboot --version

   This would show a response like fastboot version 30.0.5-6877874

   Caution: Versions provided by Ubuntu or some operating system are not up to date, do not try to flash your Gigaset with it. Instead, follow the instructions given here

2. Enable developer mode and following the instructions given here

3. Unlock your device

These steps only need to be run once per device. Unlocking the bootloader will erase all data on your device — make sure anything you want to keep is backed up (see Requirements above). Not sure what unlocking changes on your device? See Bootloader relocking.

• Run these commands in an adb enabled computer console

  adb reboot bootloader

  fastboot flashing unlock

• On your phone screen confirm by pressing volume up

Installing /e/OS

Windows users: run these commands in Git Bash, not in the default command prompt.

Let’s proceed with the installation:

1. Unzip the file you downloaded from the link in the Downloads for GS290 section above.

   unzip <fileyoudownloaded>
   

   Replace <fileyoudownloaded> with the name of the file you downloaded. You can also unzip it using a File Manager/File Explorer.

2. Confirm that the folder where you unzipped the files contains the following:

   • bin-linux-x86 directory - which contains linux tools including fastboot and adb
   • bin-msys directory - which contains Windows tools including fastboot and adb
   • .img files - The .img files that are to be flashed onto the device.
   • flash_GS290_factory.sh - The installer script.

3. Boot your GS290 into bootloader/fastboot mode:

   • With the device powered off
   • hold Volume Up + Power for few seconds. Release buttons when Boot Mode or Bootloader menu appears. Use Volume Up to navigate to Fastboot (or Bootloader/Fastboot option)and Volume Down to select it.

4. Open a terminal (Linux) or Git Bash (Windows) in the folder that contains flash_GS290_factory.sh — right-click inside the folder and choose “Open terminal here” / “Open Git Bash here”. Then make the script executable and run it:

   chmod +x flash_GS290_factory.sh && ./flash_GS290_factory.sh
   

   The chmod step may require root/sudo privileges.

5. The device reboots automatically once all the required files have been installed.

Please share your experience , suggest tips or changes to this install guide documentation by visiting the GS290 specific topic on our community forum. To report issues in /e/OS please refer this guide