T21 Auto Provisioning Fails

[Wilson_Yealink]

Hi baddah,
Sorry for the delay. I have tested your mac.cfg file with T21 in my side. It does work well.
I think that file is fine. About the firmware version confusion, the 34.72.0.21 is RPS version of T21. It just has RPS feature more than 34.72.0.20 version. Please try below steps:
1.So far, the latest version of T21 is 34.72.0.75, you can get it from here. >>34.72.0.75<<
2.Reset your phone to factory.
3.Confirm your TFTP server is ok, and enter the correct auto provision URL to the Server URL field.
You can test the URL whether is correct or not via enter it into the address of broswer. If it is correct, you can download it via browser.

If this issue still exist after above steps, In order to do more troubleshootings, please supply syslog level 6, config.bin and pcap and send to wilson@yealink.com.

How to Get the Correct Syslog, Config.bin and Trace

About None of the advanced tabs works when using firefox, it is strange, please clear the browser cache and try again.

any update, please let me know.