Upgrade W52H and W56H firmware over the air

[Lucia_Yealink]

Dear Sir,

About your problem, you can upgrade the firmware manual one by one via web interface: Setting->upgrading-> choose firmware for handset.

If there are so many handset and you want to use auto provision to upgrade the firmware, then you can use nested auto provision.
Please see the detail steps below:

1.configure a 1.cfg file,add this parameter in 1.cfg file:
#!version:1.0.0.1
over_the_air.url=http://10.2.2.19:8080/26.73.0.30.rom
auto_provision.server.url=http://10.2.2.19:8080/2.cfg

2.configure a 2.cfg file, add this parameter in 2.cfg file:
#!version:1.0.0.1
over_the_air.url=http://10.2.2.19:8080/61.80.0.15.rom

3. add the auto provision URL in server URL(in my test, it is [b]http://10.2.2.19:8080/1.cfg) via web interface.
Click on auto privsion now, it will ask for the autp provision server, and download 1.cfg file,upgrade W52H to 26.73.0.30, and it also ask for another provision server URL.

In this test,firstly,W52H will upgrade to 26.73.0.30, and base will obtain the second provision server URL after upgrading, and it will download 2.cfg file, upgrade W56H to 61.80.0.15, then all is done. it may spend some time to upgrade.
You can refer to the two pictures in the attachment.

Also, I will feedback it to our Product Dept to see if we can take it into consider that the base can use the "over_the_air.url=" to upgrade both the W52h and the W56h.

Best Regards,
Lucia