You posted in Mountain Lion and tagged the post "Messages"
However your Specs only mention an iPhone.
Your Title of your Thread mentions updating the Mac OS on a computer (OS X as opposed to iOS) and uses a Link to an Apple Document about this.
Are you trying to send and Receive Pic in the Messages app on a Computer in Mountain Lion or on your iPhone ?
If the iPhone over what sort of Network ? (Cellular or WiFi)
If WiFi do you have control over the internet ports that are open ?
Do your have MMS allowed on your iPhone ?
If it is the Mac then which service/Screen Name/IDs are you using ?
AIM needs port 5190 on UDP to be open (Firewall and Router)
Jabber can depend on the abilities of the Server you are using.
iMessages can depend on the ports opened in your routing devices the same as an iPhone could be effected.
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
G4/1GhzDual MDD (Leopard 10.5.8)
MacBookPro 2Gb (Snow Leopard 10.6.8)
Mac OS X (10.6.8),
Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images." No, Seriously