Assemble with the following command, replacing x with the number of the game (2/3/4):.(Shift + Right click in the folder -> 'Open command window here') Open a cmd window in the folder where you have ARMIPS.The ROM must be named 'Rockman Zero 2 (Japan).gba' / 'Rockman Zero 3 (Japan).gba' / 'Rockman Zero 4 (Japan).gba'. Put your Rockman Zero 2/Rockman Zero 3/Rockman Zero 4 ROM in the Z2/Z3/Z4 folder.For easier assembling, put the zeroprac folder in the folder where you have ARMIPS. The following instructions are for Windows, but I think ARMIPS will work on other operating systems as well - although you will have to build it from source. You will need a Rockman Zero 2/Rockman Zero 3/Rockman Zero 4 ROM and ARMIPS. The practice hack will be created in the directory you specified, with the name you specified. Choose the IPS/BPS patch you want to use, then your original ROM file, and then specify the name and directory for the practice hack.Open Floating IPS and press 'Apply Patch'.Download the IPS/BPS patch for Zero 2, Zero 3 or Zero 4.You will need a Rockman Zero 2/Rockman Zero 3/Rockman Zero 4 ROM and an IPS/BPS patcher - Floating IPS is recommended. There are two ways to build the practice ROMs. Krankdud (Zero 2 Hard Mode functionality).cleartonic (original concept, work on early versions).ROM hacks of the Mega Man Zero games for the Game Boy Advance.