ok so to freeze jump this is wat u have to do:
have at least 3 of ur friends with u, in a PM with friendly fire on,
1st: press START and go to INVITE FRIENDS
2nd: invite someone thats already in ur game and it should say 'error:user already in gam'
3rd:press X and u shoud be taken back to the start menu
4th: REPEAT STEPS 1-2
5th: once u've done 1-2 again, instead of pressing X, hold down the PS button until ur taken to the quit game menu, and turn off ur controller.
6th: turn controller back on
7th:ull be returned to no menu so itll look like uve been playing
8th: 2 do the jump, press X and while in midair press SELECT
9th: ull be in a freeze menu thatll say user already in game-- DONT DO ANYTHING!!
10th: this is were u need a friend-- make ur friend knife u but make sure they dont kill u (i suggest 1 knife then count to 5 then knife again --make sure u put health regen on fast!!)
11th: now the jump will be proportional to the amount of knifes ur friend does-- i suggest 25-30 for a good jump
12th: so once ur satisfied with all the knifing press SELECT again and ull be really high in the air!! THERE YA GO
HAVE FUN WITH IT AND THIS WIL TAKE KINDA A LONG TIME AROUND 10-15 MIN. EACH JUMP