Updating Phone Firmware Manually

AudioCodes' Android Device Utility allows network administrators to manually update a phone's firmware.

Firmware downgrade is blocked as of version 2.3.453 to prevent a possible race condition between Microsoft TAC and AudioCodes’ OVOC | Device Manager.
After an upgrade is completed and the popup of 'Reboot now or Later' appears, wait for about 30 seconds before pressing the Reboot button.
To manually update a phone's firmware:
1. From the PC's Start menu, select the app icon or click the application's exe file in the folder in which you saved it.

2. In the 'Android Phone Address' field, enter the IP address of the device (get it by touching the user's picture | avatar in the home screen > Settings > Device Settings > About phone > Status > IP Address).
3. Click SSH Connect; a connection with the device is established.

4. Under the 'Single Operations' section of the screen next to the field 'Firmware file', click the Browse button and navigate to and select the candidate image file.
5. Click the Submit button; a firmware upgrade process starts; the phone is automatically rebooted; a notification pops up when the process finishes. The phone notifies you that it's being updated and rebooted.

6. Swipe down twice in rapid succession to present the Manage notifications option.

7. Touch Manage notifications; the screen that is then displayed allows viewing notifications such as:
Upgrade state (Preparing, updating, etc.)
Internet access issues
8. After the update is completed, the phone reboots.

The above is also displayed when the phone is upgraded remotely from Microsoft Admin Portal or from AudioCodes' Device Manager.