I just figured out how to fix my MMS on FK23 and thought I'd share with everyone here. It's not too difficult. I took the Boost APN settings from the anps-conf.xml in system\etc, pushed it to my laptop, and looked inside for Boost's settings. For me, those were:
carrier="Boost_Mobile"
mcc="311"
mnc="870"
apn="Boost_Mobile"
user="Boost_Mobile"
server="*"
password="*"
mmsc="http://mm.myboostmobile.com"
mmsproxy = "68.28.31.1"
mmsport = "80"
authtype="3"
type="*"
Then I went to the dialer, and dialed ##3282#, then Edit, then entered my MSL (you can get it from Boost), and then scrolled down to other. Change the mmsc url to the above value, and the mms proxy as well. Then hit okay and back out, and you should now have working MMS!
carrier="Boost_Mobile"
mcc="311"
mnc="870"
apn="Boost_Mobile"
user="Boost_Mobile"
server="*"
password="*"
mmsc="http://mm.myboostmobile.com"
mmsproxy = "68.28.31.1"
mmsport = "80"
authtype="3"
type="*"
Then I went to the dialer, and dialed ##3282#, then Edit, then entered my MSL (you can get it from Boost), and then scrolled down to other. Change the mmsc url to the above value, and the mms proxy as well. Then hit okay and back out, and you should now have working MMS!
