Yealink T53 / T53C / T54W / T57W Compatible Firmware Versions
About This Guide
We originally put this guide together after encountering firmware upgrade issues with Yealink T53, T53C, T54W and T57W phones ourselves. What initially appeared to be a straightforward firmware upgrade turned into a surprisingly time-consuming process of determining which versions could successfully upgrade to which later versions, why some phones were becoming stuck in upgrade loops, and which intermediate firmware releases were required.
We are publishing the upgrade path and troubleshooting information here in the interest of sharing what we learned and hopefully saving other technicians some of that time.
The firmware files hosted on this site, however, are provided for NEBT technicians and our own internal deployment and recovery processes. If you are not one of our technicians, we strongly recommend obtaining your own copies of the appropriate firmware directly from the official Yealink support archive rather than relying on firmware hosted by a third party.
Use the information and upgrade path below as a reference, but obtain and verify the appropriate firmware for your own devices directly from Yealink.
Available Firmware Versions
96.85.0.95
Note: If your phone is already running 95.84.0.85 or a similar release, you generally do not need to install 96.85.0.95 as part of the upgrade path described below. This version is provided for devices running older firmware where an additional intermediate upgrade may be useful.
96.86.0.18
96.86.0.70
96.86.0.118
96.87.0.15
Upgrade Path Guidance
If upgrading from firmware version 95.84.0.85 or a similar 95.x release, we recommend the following staged upgrade path:
Factory reset the device. This is particularly useful if you have an auto-provisioning server configured to force a particular firmware version.
Upgrade to 96.86.0.18.
Upgrade to 96.86.0.70.
Upgrade to 96.86.0.118.
Finally, upgrade to 96.87.0.15.
After reaching 96.86.0.118, devices can typically upgrade to 96.87.0.15 or resume standard auto-provisioning.
If your phone is running firmware older than 95.84.0.85, upgrading to 96.85.0.95 first may be appropriate before proceeding through the upgrade path above.
Can You Go Directly From 96.86.0.70 to 96.87.0.15?
Sometimes. We have successfully upgraded Yealink T5x phones directly from 96.86.0.70 to 96.87.0.15, so if you are trying to save time, it may be worth attempting.
However, we have also witnessed this exact upgrade path fail and cause the phone to enter an upgrade loop. For the safest approach, use 96.86.0.118 as the intermediate version.
If you attempt the direct upgrade and the phone becomes stuck in an upgrade loop, a factory reset can generally be used to recover the phone.
If an auto-provisioning server is immediately pushing the problematic firmware again after every reboot, disconnect the phone from the network, boot it without network connectivity, and perform the factory reset before reconnecting it. This prevents the phone from reaching the provisioning server and beginning another firmware upgrade before you can reset it.
Why Staged Upgrades May Be Required
Older Yealink T5x firmware releases can differ significantly from newer releases in their internal configuration, upgrade mechanisms and partition structures. As a result, attempting to jump directly across several firmware generations may cause the firmware upgrade to fail.
The exact behaviour can vary between devices and firmware versions. We have seen some phones successfully skip intermediate releases while apparently identical upgrade attempts on other phones have failed. For this reason, the staged upgrade path above remains our recommended approach.
Potential Symptoms of a Failed Upgrade
The phone gets stuck during the firmware upgrade and never completes.
The phone enters an upgrade loop, repeatedly rebooting and attempting the upgrade.
Provisioning or configuration options are lost.
The phone may require a factory reset or firmware recovery procedure.
Following the staged upgrade path reduces the likelihood of these problems by allowing the phone to progressively update through the firmware generations.
Firmware Deployment via Auto-Provisioning
If your PBX, provisioning server or device management platform supports pushing firmware to Yealink phones using a firmware URL, NEBT also hosts the raw .rom firmware files used by our technicians for this purpose.
Available Raw Firmware Files
96.85.0.95https://newenglandbusinesstechnology.com.au/wp-content/uploads/technical/T53-54-57/96.85.0.95.rom
96.86.0.18https://newenglandbusinesstechnology.com.au/wp-content/uploads/technical/T53-54-57/96.86.0.18.rom
96.86.0.70https://newenglandbusinesstechnology.com.au/wp-content/uploads/technical/T53-54-57/96.86.0.70.rom
96.86.0.118https://newenglandbusinesstechnology.com.au/wp-content/uploads/technical/T53-54-57/96.86.0.118.rom
96.87.0.15https://newenglandbusinesstechnology.com.au/wp-content/uploads/technical/T53-54-57/96.87.0.15.rom
These URLs can be supplied directly to provisioning systems that require a firmware download URL, such as the firmware.url setting used by Yealink auto-provisioning.
Internal Use Notice: These hosted .rom files are provided for NEBT technicians and our managed deployment processes. If you are not an NEBT technician, do not use our hosted firmware URLs for your own provisioning environment. Obtain the appropriate firmware directly from Yealink and host it within your own infrastructure.
The same staged upgrade considerations described above apply when firmware is deployed automatically. Configuring a provisioning server to push the latest firmware does not guarantee that a phone running an older 95.x release will successfully bypass the intermediate firmware versions.
Upgrading With Vodia
Vodia can be used to deploy the firmware automatically to provisioned Yealink phones. This is particularly useful when upgrading multiple endpoints, as the firmware URL can be changed centrally and the phones resynced at each stage of the upgrade path.
Do not immediately resync every phone. Test each firmware stage against a single endpoint first.
1. Verify the Existing Firmware and Phone Model
Before making any changes:
Confirm the current firmware version installed on the phones.
Confirm the make and exact model of the endpoints.
Verify that the firmware you intend to deploy is compatible with that model.
Determine the appropriate next firmware version using the upgrade path documented above.
Do not assume all phones at a site are the same model or currently running the same firmware.
2. Configure the Firmware in Vodia
In Vodia, go to:
Advanced → Parameters
Locate the appropriate Yealink firmware parameter for the model you are upgrading and enter the URL for the next firmware version in the upgrade path.
For example, if the next required firmware is 96.86.0.18, enter the URL to the appropriate 96.86.0.18.rom firmware file.
Save the changes.
3. Test With One Endpoint
Select one endpoint of the appropriate model and select Resync.
Wait for the phone to provision, download the firmware, install it and reboot. Firmware upgrades can take some time, so do not interrupt the phone while the upgrade is taking place.
Once the phone has returned to normal operation:
Confirm that the phone has successfully upgraded to the expected firmware version.
Confirm that it has successfully registered again.
Confirm that normal phone functionality is working.
Do not proceed with the remaining endpoints until the test phone has been confirmed working.
4. Upgrade the Remaining Endpoints
Once the test endpoint has successfully upgraded, select the remaining applicable endpoints and choose:
Resync the selected accounts
Wait for the endpoints to complete their firmware upgrades and reboot.
Confirm that the phones have returned to normal operation and are running the expected firmware version before proceeding.
5. Configure the Next Firmware Version
Return to:
Advanced → Parameters
Update the appropriate Yealink firmware parameter to point to the next firmware version in the upgrade path.
Save the change.
For example, when following the recommended path, this may mean progressing through:
96.86.0.18 → 96.86.0.70 → 96.86.0.118 → 96.87.0.15
6. Test One Endpoint Again
For every firmware stage, select a single endpoint and Resync it first.
Wait for the firmware upgrade to complete and confirm:
The expected firmware version is installed.
The endpoint has registered successfully.
The phone is operating normally.
Only after confirming the test endpoint should you resync the remaining phones.
7. Resync the Remaining Endpoints
Select the remaining applicable endpoints and choose:
Resync the selected accounts
Wait for the upgrade process to complete and confirm that the endpoints are operating correctly.
8. Repeat Until the Latest Firmware Is Reached
Continue this process for each firmware version required by the upgrade path:
Update firmware parameter → Save → Resync one endpoint → Confirm → Resync remaining endpoints → Confirm
Repeat until all endpoints have successfully reached the desired/latest firmware version.
This staged approach takes a little longer than simply pushing the latest firmware to every phone at once, but significantly reduces the risk of turning a firmware compatibility problem into an upgrade loop across an entire fleet of phones.
Recovering From an Auto-Provisioning Upgrade Loop
If a phone becomes stuck in an upgrade loop because its provisioning server is continually instructing it to install a firmware version it cannot successfully upgrade to, you may find that the phone begins another upgrade before you have an opportunity to correct the configuration.
In this situation:
Disconnect the phone from the network.
Power on the phone without network connectivity.
Perform a factory reset while the phone cannot communicate with the provisioning server.
Correct the firmware version or upgrade path configured on the provisioning server.
Reconnect the phone to the network and allow it to provision again.
Booting the phone without network connectivity prevents it from immediately contacting the provisioning server and starting the failed firmware upgrade again.
Important Notes
Always confirm model compatibility before upgrading.
Obtain firmware directly from Yealink for use in your own environment.
Do not interrupt power during firmware installation.
Where possible, use auto-provisioning rather than manually upgrading large numbers of phones.
When using Vodia, test each firmware stage on one endpoint before resyncing the remaining endpoints.
Do not move to the next firmware version until you have confirmed the current stage completed successfully.
If a phone enters an upgrade loop due to auto-provisioning, disconnect it from the network before attempting a factory reset.
The upgrade paths documented here are based on our own experience with these devices. Behaviour may vary depending on the model, existing firmware and device configuration.
Firmware upgrades and recovery procedures are performed at your own risk.