How to set up GBA BIOS properly for BizHawk

Due to recent changes in the Emulator Rulesets, it is now required to use the **mGBA BIOS** for Speedruns on BizHawk. This is due to accuracy & accurate timing (Source: https://www.reddit.com/r/emulation/comments/6u2ko2/how_is_mgba_with_its_emulated_bios/dlqm7xs/ )

# Where do I acquire a GBA BIOS?
There are various ways to get a dumped BIOS.

* **Dumping it Yourself** : If you've got a GameCube or Wii with Homebrew and a GBA to GC Link Cable, you can use this tool to dump the BIOS: https://github.com/FIX94/gba-link-cable-dumper
* **Download it from the Internet** : Look around the BIOS by using your preferred search machine and download it. **Avoid .exe files. You are looking either for a .zip file OR a .bin file**

# How do I install the GBA BIOS?
Once you have downloaded your BIOS (*extract the .bin file from the .zip file*), make sure you put it in the **Firmware** folder inside the BizHawk folder, just in case you won't lose it while cleaning up your PC. **Open BizHawk -> Config -> Firewares...**.

Scroll down and look for the GBA item. If you have put it in the Firmware folder, BizHawk should automatically bind the BIOS onto BizHawk. It should look like this: 

https://imgur.com/2tscaIN.png

If this isn't the case, **Right-Click on GBA -> Set Customization & select your BIOS .bin file**.

You are now almost done!

# The Final Step
Now you have to start Wario Land 4. 

**BEFORE you continue, make sure your Emulation Core is set to mGBA**.
You can check so by clicking on the **GBA Menu Item -> Core -> mGBA** while the game is running. Avoid VBA-next at all costs because it isn't as accurate as mGBA and generally banned in the GBA Community using Emulation Cores.

Go to **GBA -> Settings** and click on the **Sync Settings** tab. You will see three items.
Set **Skip BIOS** to **False** and hit OK.

https://imgur.com/qDT9cMU.png

BizHawk will now tell you to perform a Core Reboot.
You can do so with **Emulation -> Core Reboot**.

*You have now set up the GBA BIOS w/ mGBA Core*.

**Much fun running Wario Land 4 !**

Wario Land 4

Pinball Zone

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Game Boy Player

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JPN / NTSC

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Run Type

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Teamstre