Congrats on the jtag!
Well, to host a XP lobby, youll need mw2 installed onto jtag (hard drive,usb,etc.)Then, download TU7 (Title Update 7) and put the file with a long name that says TU_000(insert numbers here) into the 'Cache' folder, should be easy to find on XeXmenu. Then, go to the mw2 folder, put in the modded files, be sure to only use one mod at a time, or else they will corrupt each other and neither will work. I will reccomend to always backup all the files you replace, so you could easily reset to unmodded and put on another mod.Now, on retail, go to find game, press A on free for all. Once it shows your gamertag and rank, back out.Now, connect a ethernet cable from the J2R (JTAG to Retail) and start up mw2 on both. Start on JTAG, and join on retail. Don't spawn on jtag if its the xp lobby, but some require you to spawn on jtag.Once retail joined, spawn retail, but not jtag. Now press the Back button(left of big X button) on your JTAG and boom!infected. Now, leave on retail, connect normal ethernet cable (not neccesary on the Slim) and connect to XBL. Go to Private Match, get 4 players other than you, and start.It should do the rest.

Hope I helped, I am somewhat new to this too, but if this doesn't work, youtube is the way to go!

Yes-I-Host wrote Hey jtagers i just got my jaag and im new to it ahaha , Do You how to Bypass TU7 MW2 Like What to do with the files Send me a a link , or please help me , I have ihc James xp and challagne .dll

[ Register or Signin to view external links. ] please sub it would be nice... there are better patches but this video shows you the basics and yes i did make it. if u need any help pm on youtube