Disable web browser on VP59

[cranben]

I am looking for a way to disable the built-in Browser of a Yealink VP59 phone.

Ideally, the Browser would not appear as an option on the desired phones. If that's not possible, is it possible to inactivate/disable the Browser? We want to keep all phone models similar in the company and restrict web access on some extensions.

In the y000000000091.cfg template I found under WEB Port:
static.wui.https_enable
static.wui.http_enable
with the values of:0-Disabled;1-Enabled

I set them to 0 and rebooted the phone, yet the web browser still works. If this is the right setting, does the phone need to be factory defaulted and then provisioned with this setting to take effect?