Autoprovision - config file encryption problem

[Rus]

(12-24-2013 11:27 AM)Yealink Support Wrote:  Hi oea,
Please test below steps and kindly feed back to me.
Don't forget to enable "auto_provision.aes_key_in_file =1" in the CFG file before upload encryption files.
1. Add/Edit the following parameters in configuration files(not encryption). Then do auto provisioning to all phones.
-----------------------------------
#!version:1.0.0.1
auto_provision.aes_key_in_file =1
auto_provision.update_file_mode =1
-----------------------------------
2. The administrator encrypts y000000000007.cfg and MAC.cfg files and put them to the root
directory of the provisioning server.
3. Reboot the IP phone to trigger auto provisioning process. For more information, refer to Yealink IP Phones Auto Provisioning Guide.

Can I please be 100% clear since I cannot find the exact answer anywhere on the forums...

I have a boot file which calls 2 cfg files.

Do I place the auto_provision.aes_key_in_file =1 line in the .boot file or in the cfg files?
If I place the line into the cfg files, do I need to get the phone to load these in unencrypted fashion or should I encrypt the modified files and then get the phone to reload them?