(description copied from video description)
To get the full details of the trick, watch this video:
The first part of the setup is saving as you leave Sector 1. The door on the right must be the last door used before saving. If you accidentally enter the navigation room, you have to run back to the recharge room first, so you can enter from the right side. Do not save at any other point in the run. Saving here sets up one of the memory corruptions.
The second part involves breaking blocks in Sector 4. Make sure you break the same blocks as shown in the video. Breaking the last two missile blocks sets up the other memory corruption. After this point, you don't have to worry about which blocks you break.
After getting power bombs, return to the large room with wavers and enter the door on the bottom right. Keep re-entering the large room until the waver spawns facing left. After it bounces back toward the right, jump while it's at the peak of its arc, letting it slam into the wall. Freeze it, then quickly get into the exact position shown in the video. Once you're lined up, lay a power bomb, and do a spin jump into the corner. Turn around and hold left while the power bomb goes off. If you don't go into the ceiling, you were probably too far away from the wall. You can re-enter the room and try again.
Once you're out of bounds, morph, then hold left, then hold A. At this point, you need to count the number of times you see the morph ball cross the screen in the top-left corner. Right before you appear on screen for the 4th time, lay a power bomb. If timed correctly, it will set the area ID in the save data to 0, meaning you'll spawn on the Main Deck. Because the door value stays the same (the one you used in the save room), it will spawn you in the destroyed hallway.
Right before you appear on screen for the 12th time, lay another power bomb. If timed correctly, it will set the event value to 128 (based on the setup done in Sector 4 earlier).
If you want to be really safe, stop a bit early, lay a power bomb, move a few blocks, and lay another one. Do this two or three times for each one.
Shortly after you appear on screen for the 16th time (not immediately after, give it a couple extra bounces), start holding right. This is necessary to make it back in bounds. If you stop bouncing and you're not back in bounds, you're softlocked and you'll have to reset. Once back in bounds, reload the game by dying. Soft-resetting the game will not work. If you spawn in Sector 1 and not in the destroyed hallway, you mistimed the first power bomb. However, the event value may still have been corrupted, so you can still head toward the ship to beat the game. To check if the event value was corrupted, you can pause the game and press A. If you see German text, then it was successfully corrupted. If you spawn in the destroyed hallway, but it reverts to the pre-destroyed hallway when you re-enter from the left, then you mistimed the second power bomb. In this case, you'll have to try again from the save in Sector 1 (or just completely reset if you're aiming for a competitive time).
