Open ZArchiver, find your download, and extract the file to get the .iso or .chd image. Setup Emulator: Open AetherSX2/NetherSX2 . Import the PS2 BIOS file when prompted. Select the folder containing your God of War 2 game file.

Browse your phone's storage and select the unzipped BIOS .bin file.

The Ultimate Guide to God of War 2 Highly Compressed for Android

An essential system file for the emulator to function.