first of all thanks so much for you effort with these modem files. Many of us have had to wait months for this.
#1. install your flavor of ICS i'm using one. Clean install, whipe chache, delvic and battery. DO NOT INSTALL THE MODEM FILE
#2. get out of install mode CWM and let it load normally
#3. when fully loaded restart phone and go into CWM and install the modem file
#4. when in ICS on the numberpad type *#2263# and select cdma, 1700, 1700 then hit menu and select END
#5. then go into market and download a tool called Hiapn global
start the app, click "click to DNS check" hit yes, grant superuser permission
#6. go down and select WCDMA perfered, tun on IMS, Turn on SMS over IMS, turn on LTE dump, click refresh and update, and toggle DNS check.
#7. VERY IMPORTANT CLICK "TURN OFF ANTENNA" wait 20 seconds and hit it again to "TURN ON ANTENNA"
get out of the application and you should be good to go no matter what service you use, i'm on MOBILICITY in Surrey, BC, Canada.
Thanks i hope this helps you
Update 6/11/2012 12:45 : ok everything is working great with the blaze modem. one major issue if you are in a place with bad signal the manual searching message will pop up ever 1 second nonestop, no way to stop it so far. it will overlay every program and even games