Purpose: This guide lists Poly 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.
Overview
- What this is: A compatibility reference for Poly 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 Poly 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: “VVX 450” or “CCX 600”).
VVX Series
| Device Name | Minimum Firmware Version |
|---|---|
| Polycom VVX 101 | 6.4.4 |
| Polycom VVX 201 | 6.4.4 |
| Polycom VVX 250 | 6.4.2.0 |
| Polycom VVX 300 | 5.9.7.4477 |
| Polycom VVX 301 | 6.4.4 |
| Polycom VVX 310 | 5.9.7.4477 |
| Polycom VVX 311 | 6.4.4 |
| Polycom VVX 350 | 6.4.2.0 |
| Polycom VVX 400 | 5.9.7.4477 |
| Polycom VVX 401 | 6.4.4 |
| Polycom VVX 410 | 5.9.7.4477 |
| Polycom VVX 411 | 6.4.4 |
| Polycom VVX 450 | 6.4.2.0 |
| Polycom VVX 500 | 5.9.7.4477 |
| Polycom VVX 501 | 6.4.4 |
| Polycom VVX 600 | 5.9.7.4477 |
| Polycom VVX 601 | 6.4.4 |
| Polycom VVX 1500 | 5.9.7.4477 |
Edge E Series
| Device Name | Minimum Firmware Version |
|---|---|
| Polycom Edge E100 | 8.0.2 |
| Polycom Edge E220 | 8.0.2 |
| Polycom Edge E300 | 8.0.2 |
| Polycom Edge E320 | 8.0.2 |
| Polycom Edge E350 | 8.0.2 |
| Polycom Edge E400 | 8.0.2 |
| Polycom Edge E450 | 8.0.2 |
| Polycom Edge E500 | 8.0.2 |
| Polycom Edge E550 | 8.0.2 |
CCX Series
| Device Name | Minimum Firmware Version |
|---|---|
| Polycom CCX 400 | 8.0.2 |
| Polycom CCX 500 | 8.0.2 |
| Polycom CCX 600 | 8.0.2 |
How to Check Your Poly Phone Firmware
- On the phone, open Settings (or press Menu).
- Go to Status or Device Information (names vary by model).
- Locate Software/Firmware Version and compare it to the tables 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: VVX 450)
- Current firmware/software 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/software 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!