main.tweaks for MKWii

1) Load `main.dol` No uploads — everything stays local.

Choose file…

…or drag & drop your main.dol here

Loaded file

—

Detected disc variant

—

Override variant

FaceLib base

—

Changed entries

Verification & detection details

Variant / Path	Offset	Found byte	Meaning

Region-byte scan matches the algorithm offsets from Vega's documentation; PAL and JP have two code paths. Values map to 00..06 = Japan, Americas, Europe, AUS/NZ, Taiwan, South Korea, China.

2) Patch Region ID bytes (line colors / matchmaking region)

New region value

Load a file to inspect and patch region bytes.

Variant / Path	Offset	Current byte	Meaning	Select

PAL and NTSC-J normally patch both valid code paths. The global revert button restores both region-byte and FaceLib edits.

3) Patch loading screen color (RGB immediate patch)

Loading screen RGB

Load a file to inspect the loading screen color routine.

Routine offset

—

Routine state

—

Current RGB

—

This patch replaces three lbz instructions with immediate loads for red, green, and blue. The alpha load remains untouched.

4) Edit all Mii colors (FaceLib element colors)

Load a file to populate the editor.

Notes

Disc variant detection reads the known Region ID algorithm result byte inside main.dol at offsets: 0x6113 (RMCE01), 0x614F / 0x61AF (RMCP01), 0x60A3 / 0x60D3 (RMCJ01), 0x625F (RMCK01). PAL and JP have two valid paths.
Loading screen color routine offsets: PAL 0x210784, NTSC-U 0x2106E4, NTSC-J 0x2106A4, NTSC-K 0x210AF8. The patch converts the RGB loads into immediate values while leaving alpha untouched.
FaceLib base addresses for Mario Kart Wii: PAL 0x2479B0, NTSC-U 0x247678, NTSC-J 0x247340, NTSC-K 0x247788. All element color offsets are relative to this base.
Colors are stored as 32-bit big-endian RGBA words. The HTML color input edits RGB; alpha can be adjusted separately (0-255).
Back up your original file. To patch a full ISO/WBFS, extract main.dol, patch here, then rebuild with Wiimm's WIT or your preferred tool. Alternatively use in My Stuff on packs that allow it.
Credits to Vega for the documented region-byte offsets, to hazel for the loading screen color documentation, and to Tockdom for the Main.dol file documentation.