Install /e/OS on a Nothing Nothing CMF Phone 1 - “tetris” alpha

The instructions in this guide will assist you to install /e/OS on your tetris. Please read through the instructions at least once before actually following them, so as to avoid any problems later.

It is important that you know that downgrading Smartphones on OS versions greater than the /e/OS OS version you plan to install, can cause instability or at worst brick some devices. We recommend that you check your current OS version, before attempting the installation.

It is advisable to flash your device only if you know what you are doing and are ok taking the associated risk. All /e/OS builds are provided as best effort, without any guarantee. The /e/OS project and its project members deny any and all responsibility about the consequences of using /e/OS software and or /e/OS services.

Requirements

  • If required take a backup of all important data from your phone on an external storage device before proceeding.
  • Do not take a backup on the same device as some of these actions will format the device and delete the backup.
  • Ensure your phone is charged more than 50%
  • Check that adb and fastboot are enabled on your PC. If not you can find the setup instructions here
  • Download all the files and images mentioned in the download section below before starting the installation

  • Make sure you have a working data cable to connect your device to the PC. There are cables which are only for charging and do not transfer data.

  • Enable USB debugging on your device. You can find the instructions here
  • Make sure that your model is listed in the Smartphone Selector. Check the model supported. Where available, information on the model supported should show as a pop-up when you hover the cursor on the Device name. The model number supported should be the exact same.
  • Boot your device with the stock OS at least once and check every functionality.
Warning: Make sure that you can send and receive SMS and place and receive calls (also via WiFi and LTE, if available), otherwise it will not work on /e/OS as well. Additionally, some devices require that VoLTE/VoWiFi be utilized once on stock to provision IMS.

Please share your experience , suggest tips or changes to this install guide documentation by visiting the Nothing CMF Phone 1 specific topic on our community forum.

To report issues in /e/OS please refer this guide

Downloads for tetris

To understand the difference between /e/OS builds check this guide

Warning: Please note some of the above links can lead to external sites

Unlocking the bootloader

Tip: The steps given below only need to be run once per device.
Warning: Unlocking the bootloader will erase all data on your device! Before proceeding, ensure the data you would like to retain is backed up to your PC and/or an online drive
Warning: Some vendors/manufacturers prevent the bootloader from being unlocked. Depending on where your device was acquired you may or may not be able to unlock the bootloader. To verify if your device is compatible please check the devices list.
  1. Boot the device
  2. Enable Developer options
  3. From developer options, enable OEM unlock

  4. Reboot on fastboot by running the command in the PC console adb reboot bootloader

    Tip: All the console commands are run on an adb enabled PC and in the adb console.
  5. Ask for unlock with fastboot flashing unlock
  6. Approve with volume +
  7. Unlock critical with fastboot flashing unlock_critical
  8. Approve with volume +
  9. Reboot the device fastboot reboot
    • The device proceeds with a factory reset

Installing /e/OS

Tip: For Windows users, we advise to use Git Bash. For more info about Downloads and Installation see Official Documentation

  1. Unzip the archive

     unzip <fileyoudownloaded>

    Replace <fileyoudownloaded> with the name of the archive file you downloaded.

    Alternately you can create a folder and unzip the archive there.

  2. Confirm that extracted directory contains following content:

    • 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_tetris_factory.sh - The installer script.

  3. Boot into bootloader/fastboot mode.

    • Power OFF the device.
    • Hold Power + Volume Up button combo simultaneously and then select Fastboot from the menu and select Volume Up to confirm selection.

  4. Run the installer script on Terminal(Linux) or on Git Bash UI(Windows).

    • Make sure you are in the current directory which contains the flash_tetris_factory.sh file.

    Linux

    • Right click -> Open terminal here

    Windows

    • Right click -> Git Bash here
    • Execute the following command:
     chmod +x flash_tetris_factory.sh && ./flash_tetris_factory.sh

    The script will flash all required files and will wait for input at the last step.

Success: Congratulations !! Your phone should now be booting into /e/OS !!

Please share your experience , suggest tips or changes to this install guide documentation by visiting the Nothing CMF Phone 1 specific topic on our community forum.

To report issues in /e/OS please refer this guide