T41P Custom logo file TFTP only?

[JamesK]

So I found the section about using a customer logo. It shows in the example a TFTP server. But I was wondering if it can use anything else other then a tftp server? like an ftp server or http? I found this section an I did add it.

####################################################
## Configure the access URL of the Logo File ##
####################################################
#(For SIP-T42G and SIP-T41P IP phones only)
lcd_logo.url =http://websiteaddress/image.dob

#lcd_logo.delete = =http://localhost/all
#Delete all custom logo files
lcd_logo.delete = http://localhost/all

#Configure the logo mode (For SIP-T42G and SIP-T41P IP phones only).
#0-Disabled, 1-System logo (default), 2-Custom logo
phone_setting.lcd_logo.mode = 2

The settings seem correct and it did make the change for the customer logo in the web gui but it does not look like it is downloading the file. Thoughts?