﻿How to rebuild a PS3 RCO with custom GIM images using Rcomage and GimConv
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http://www.psdevwiki.com/ps3/Template:How_to_rebuild_a_PS3_RCO_with_custom_GIM_images_using_Rcomage_and_GimConv


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║ 1 - Extract RCO ║
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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
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║ 2 - GIM to PNG ║
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Identify visually the image you want to customize by converting it to PNG. The conversion to PNG can be made by two optional ways:
    2a - 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"
    2b - Or use GimConv.exe to convert an original "icon.gim" (from "RebuildMe" folder) to "icon.png" with the command: "gimconv.exe icon.gim -o icon.png"
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║ 3 - Custom PNG ║
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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...)
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║ 4 - Identify GIM settings ║
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Use GimConv.exe to identify the original GIM settings of "icon.gim" (from "RebuildMe" folder) by making GIM-to-GIM conversions
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║ 5 - PNG to GIM ║
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Use GimConv.exe to convert the custom "icon.png" (from step 3) to "icon.gim" with the original GIM settings you found (in step 4)
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║ 6 - Overwrite original GIM ║
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Copy the custom "icon.gim" to "RebuildMe" folder overwriting the original "icon.gim"
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║ 7 - Build RCO ║
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Use Rcomage.exe to compile the RCO with the files from "RebuildMe" folder