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Enabling Reusable TMs

Author(s): Drayano (original), SpagoAsparago (reformatting).
Research: Mikelan98, NextWorld, BagBoy. Mikelan98 has requested that you give credit to him if you implement this in your hack.

This is a guide on how to implement reusable TMs in Platinum and HGSS. The US versions of those games are used, so offsets may be not be the same if you're using a different version.

The tools required are an hex editor and Tinke 0.9.2, or instead CrystalTile2 if you're using HGSS.

Table of Contents​

Extracting the files​

First you need to extract the relative files in order to perform the hex editing

Platinum​

For Platinum the files you need are arm9.bin and overaly9_84.

Open your ROM in Tinke, search the file, select it and click the extract button.

HGSS​

For HGSS you need to extract arm9.bin and overlay_0015.bin, but they are compressed unlike in Platinum hence the need for CystalTile2. Open CrystalTile2 and then select File>Open and select your ROM. Then click the NDS icon in the top bar, which should open a window called NDS filesystem information:

Select the file you want to export, right click and click Extract (U), and save it somewhere. You can also use the arm9.bin from your DSPRE project folder, which is already uncompressed.

Hex Editing​

Load the files you extracted in a hex editor, then change the bytes according to the following steps, then save the files.

Making TMs infinite​

  • For Platinum, at offset 0x865EB in the arm9.bin change D1 to E0
  • For HGSS, at 0x825A7 in the arm9.bin change D1 to E0

Removing the TM item count​

  • For Platinum, at 0x4372 in overlay 84 change FF F7 83 FF to 00 00 00 00
  • For HGSS, at 0x6239 in overlay 15 change D3 to E0

Reinserting the files​

  • For Platinum just open your ROM in Tinke again, search the files you previously extracted, select them and click the Change File button to replace them with the ones you hex edited. Then save the ROM.

  • For HGSS, in the NDS filesystem information window, you can select the files you previously extracted, right click and this time click Compression and select your own hex edited files. If you're using the arm9 from DSPRE project folder, you only need to click Import instead. After you're done you can use File>Build ROM... to save your ROM.