Version 1.03 contains all of the fixes from version 1.01, you do not need to download both patches. Unfortunately, saved games from 1.00 or 1.01 will not work with version 1.03, you will need to start the game again from the beginning.
Fixes in version 1.03:
Fixes problems with level 57.
Solves a problem with saving games on levels past 100.
Fixes in version 1.01:
Fixes problems with levels 24 and 28.
Added Cheat Mode, which grants unlimited ammo. To activate the cheat mode just hit the X key. Hitting X again turns off cheat mode.