Autoprovision - config file encryption problem

Hi,

I try to autoprovision by using Yealink RPS service. The phone I use (T20P) can autoprovision properly when the config files are not encrypted but when I try to encrypt the config files (both common and MAC related ones) the autoprovisioning is not working?

I follow the instructions on the Yealink SIP-T2XP phones Auto Provision User Guide Rev_71_165.pdf and Yealink Configuration Encryption Tool User Guide.pdf files but cannot manage to configure properly.

I am using 9.71.0.141(RPS Enabled).rom firmware file. Is there a never RPS enabled version?

How can I troubleshoot this issue? Can anyone help me about this encryption problem?

Regards

Evren