I have few problems:
1. OK i was doing cesar's mission "High Stakes, Lowrider" on PS2. Before starting the race I entered 'Cars fly' cheat, it went all fine, all my rivals' cars flew away and I was on No. 1 position but after clearing 2 or 3 check points my game hanged though the music/radio/audio kept playing but my videos stopped and then I had to restart my PS2

. Can anyone please tell me that what can be the problem??? Before starting the mission I had weapon package #1 cheat, infinite health cheat and never wanted cheat, can these be causing the problem???
2. When I try to deactivate Weapon Package # 1 it doesn't get deactivated instead it again shows activated.
3. Once I just used Infinite health and never wanted cheat but before saving the game I deactivated them but when I save the game it says " You have one or more cheat activated and it may harm the game". How can this be possible when I have deactivated all the cheats???
Please help me because I don't want to start a new game and moreover if I do I wont be able to go too far in this game w/o using atleast infine health and never wanted cheat