Hi, If you are doing autoprovisioning, then use this parameterand change to 0 or 1 (now you have 4)
phone_setting.call_info_display_method = 0
1.It configures the call information display method when the phone receives an incoming call, dials an outgoing call or is during a call.
CFG...
To make it simple, use FileZilla to ssh to your server, then upload your logo file to here "var/www/fusionpbx/themes/default/images/"
Then set your file name at Default Settings>Theme (there are few settings related to logo)