Hello, I am considering installing e/OS on a CMF phone 1. The phone is running stock android 14, but the e/OS version is Android 13 (tetris). Can I install e/OS from the command line, if the original android version is android 14?
I refer to this warning in the installation tutorial:
“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.”.
/e/OS Android 13 or Android T (Goolag codename Tiramisu) is not available for the CMF phone 1 by Nothing (codename tetris), but /e/OS-U Android 14 (codename Upside Down Cake).
A downgrade is not possible because the CMF Phone 1 (tetris) has been shipped with Nothing OS 2.6 (Android 14) since Jul 2024 and no Andfroid 13 (T) is available.
The proof of the pudding is in the eating! Please check and share your experience with us.
If an OTA*update from the first unofficial version e-2.2-u-20240912-test-tetris from @Sahil_Sonar does not work with the /e/ versions e-2.5-u-20241108446625-community-tetris and e-2.6-alpha-u-20241116448183-community-tetris, an update via Local update can be tried. No PC is required for this. However, a clean install is the safest installation method.
Kudos to the author of the /e/OS documentation Install /e/OS on a Nothing Nothing CMF Phone 1 - “tetris” alpha, which was written clearly and with competence. My praise also goes to the author of the installation script flash_tetris_factory.sh It works with Linux and Windows.
*I haven’t tried it myself because I prefer a local clean install.
At “Unlocking the bootloader”. Between instruction “3. * From developer options, enable OEM unlock” and “4. Reboot” please insert “Enable USB debugging”. Otherwise, “adb” won’t find a device (cmf-OS 2.6).
Let us move to the section “Installing /e/OS”. My findings on the sequence:
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.
Please refer to the instructions on the screen of the cmf device. I do remember that “Volume Up” switched between the entries and do confirm it I had to press “Volume down”.
Nothing to stop me from getting rid of Google. But it could be a little more pleasant. But I’m deeply grateful for e/OS/.
After that web install works. I am on 13/16 (Installing). Progress flying left to right for 45 minutes and it doesn’t seem to be doing anything. I’m afraid to disconnect the phone.
I got the CMF1 with stock rom an tried the webinstaller on Windows 10 an Ubuntu 24.10.
Could get it to run on Linux, the phone was never recognized in fastboot-mode. On Windows it required the mentioned driver update through Windows Update.
The Webinstaller eventually ran fine but the phone ended up in a bootloop.
Finally I downloaded the current IMG-e-2.9-a14-20250323478433-community-tetris.zip, unpacked and ran the sh-script with Gitcmd on Windows. No issues so far, phone booted /e/-os as expected.
Hello,
I just buy a CMF phone 1 and I consider to install e/os on it.
I don’t find any reference to tetris. How can I check if this device is “tetris”?
It come with Android 15. Should I consider that I have I shouldn’t install IMG-e-2.9-a14 because it would be a downgrading of the OS?
