Template:How to rebuild a PS3 RCO with custom GIM images using Rcomage and GimConv

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How to rebuild a PS3 RCO with custom GIM images using Rcomage and GimConv
  1. - Extract RCO. Use Rcomage.exe to dump the RCO contents without image conversions (so GIM files are extracted as GIM) to a folder named RebuildMe. This files are going to be used to identify the original GIM setting and for RCO rebuilding purposes
  2. - GIM to PNG. Identify visually the image you want to customize by converting it to PNG. For this example the image is named icon.png. The conversion to PNG can be made by two optional ways:
    1. - Use Rcomage.exe to extract the RCO contents with image conversions (so GIM files are extracted and converted to PNG) to a folder named DontRebuildMe. This files cant be used for RCO rebuilding purposes
    2. - Or use GimConv.exe to convert the original icon.gim (from RebuildMe folder) to icon.png with the command: "gimconv.exe icon.gim -o icon.png"
  3. - Custom PNG. Use icon.png as the base (mostly to respect the original width and height) and customize it with any image edition program (gimp, photoshop, etc...)
  4. - Identify GIM settings. Use GimConv.exe to identify the original GIM settings of icon.gim (from RebuildMe folder) by making GIM-to-GIM conversions
  5. - PNG to GIM. Use GimConv.exe to convert the custom icon.png to icon.gim with the GIM settings you found in step 4
  6. - Overwrite original GIM. Copy the custom icon.gim to RebuildMe folder overwriting the original icon.gim (this is the only file modifyed in RebuildMe folder along all this explain)
  7. - Build RCO. Use Rcomage.exe to compile the RCO with the files from RebuildMe folder