Home / IP Phones / Deskphone Firmware / CIP280/CIP290/CIP291 Video Phone / 280/291Plus Android 14 Upgrade

280/291Plus Android 14 Upgrade

To upgrade our CIP280V2 and CIP291Plus phones to Android 14, you will need to do a manual flash of the firmware. The reason for this is that Android 14 has major system driver architecture changes, which makes seamless in-place incremental upgrade unavailable. Compared with Android 11, Android 14 delivers significant improvements in both system security and overall stability.

To flash the new firmware, you will need a USB C cable and follow the steps below. Please note, the phone will be factory defaulted after the upgrade. If you have Option 66 or redirect setup, the phone should auto-reprovision.

  1. Install ADB Driver
  2. Download and unzip the DriverAssitant_v5.1.1.zip
  3. Open the extracted folder and double-click the DriverInstall.exe to launch the driver installer program.
  4. You will see a prompt window as below.
    1. installdriver

  5. Press the Uninstall Driver (right) button to remove all old driver first, and then press the Install Driver (left) button to install it.
    1. If successful, it will show "Install driver ok".
  6. On the Phone, swipe down from the top and choose the cog icon to go to settings.
  7. Click on General
  8. Click on "Version" 7 times to enter developer mode.
    1. developer

  9. Hit the back arrow once.  Enter your admin password at the bottom of the screen.
  10. Click on Developer Options (only visible if Admin password was entered)
  11. Toggle on "USB Debugging" and click OK.
    1. usbdebugging

  12. Connect the Phone to the computer with a USB C cable.
    1. To verify if you have successfully installed it, go to Device Manager. You should see an Android Device - Android ADB Interface when the phone is connected.
    2. devicemanager
  13. Download and unzip the firmware for your model (these are both large multi GB files).
    1. CIP280V2
    2. CIP291Plus
  14. Download and unzip the Upgrade_tools.zip
  15. Open the folder and run the RKDevTool.exe
  16. You will see the following page.
    1. upgradetool

    2. Note the prompt at the bottom will show Found One ADB Device. If it is No Devices Found, that means the phone has not connected to the PC.
  17. Click the "Upgrade Firmware" tab to enter the page, then click Switch button.
  18. If the phone does not have USB debugging permanently enabled, the following prompt will appear when you click "Switch". Please click click "Always allow from this computer" then press "Allow".
    1. allow

  19. The tool should displays Found One LOADEDER Device (it may show Found One MASKROM Device)
  20. Click Firmware button to choose the CORRECT update.img file for your model that was downloaded in step 13.
  21. After that, click Upgrade button. The phone will download the update.img and reboot to upgrade the image.
    1. rkdevtool

  22. Once the phone boots back to normal, you can unplug the USB C and close the applications.

Note: CIP290V2 does not have an upgrade to Android 14.



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