Purpose: This guide lists Crexendo CX Series devices supported by Crexendo and the minimum firmware version required for each model.
Important: Devices should be on the listed version or newer unless directed otherwise by Crexendo Support.
Important: Devices should be on the listed version or newer unless directed otherwise by Crexendo Support.
Overview
- What this is: A compatibility reference for Crexendo CX Series desk phones used with Crexendo.
- What “minimum firmware” means: The lowest supported firmware version for each model.
- Best practice: Keep firmware current to improve reliability, security, and provisioning compatibility.
Supported Crexendo CX Series Devices & Minimum Firmware
Before you update: If your phone is managed/provisioned by Crexendo, avoid manual firmware changes unless instructed. Manual updates can cause provisioning or feature issues if the incorrect firmware branch is used.
Tip: Use Ctrl + F / Cmd + F to find your model quickly (example: “CX270”).
| Device Name | Minimum Firmware Version |
|---|---|
| Crexendo CX220 | 1.0.4.71 |
| Crexendo CX240 | 1.0.4.71 |
| Crexendo CX270 | 2.0.4.71 |
| Crexendo CX340 | 2.0.4.71 |
| Crexendo CX350 | 2.0.4.71 |
| Crexendo CX430 | 2.0.4.71 |
How to Check Your CX Series Firmware
- On the phone, open Menu or Settings.
- Navigate to Status, Device Information, or System Info (wording varies by model).
- Locate Firmware Version and compare it to the table above.
Pass criteria: If your firmware is equal to or higher than the minimum listed for your model, you meet the requirement.
Troubleshooting
My firmware is lower than the minimum
- If your device is provisioned by Crexendo, do not manually update unless instructed.
- Contact support and provide:
- Phone model (example: CX340)
- Current firmware version
- MAC address (if available)
My model is not listed
- The device may be unsupported or not approved for this environment.
- Contact Crexendo Support with the exact model number and current firmware version.
The phone won’t provision or behaves oddly
- Power cycle the phone (unplug/replug).
- Confirm the device is running a supported firmware line for your model.
- Contact Crexendo Support for verification and next steps.
FAQ
Do I need the exact firmware listed?
No. The listed version is the minimum. Newer versions are typically acceptable unless Crexendo advises otherwise.
Why does firmware matter?
Firmware impacts security, stability, and provisioning/feature compatibility.
If you need additional assistance, please contact Crexendo Support at 855-211-2255 or email us at support@crexendo.com — our team is happy to help!