First you must beat the game once. The start a new game with all of your weapons, health upgrades, ect. Then input the 30 second invincibility cheat and play to the Drek's Fleet level. Go through the electrified water section first and get past with one or no hits. At the very end of this section where you get the Code Bot, make sure the cheat is turned on, get the health crate in that room and jump into the electrified water. Don't worry, you won't die. Stay in for a few seconds and jump back out. Continue with the level and you'll notice that all of the ships are now white. The cannons on the the ship with the magna boot part don't fire anymore. So now you can easily get past that without getting in the starfighter. DO NOT DIE BEFORE GETTING TO THE CANNONS OR ELSE THE GLITCH WILL BE TURNED OFF!!!