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LIPS successfully patches, but CHKSUM is a FAIL.
Forum Index - SMW Hacking - SMW Hacking Help - LIPS successfully patches, but CHKSUM is a FAIL.
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Good evening.

I'm having difficulty with a question listed on the IPS FAQ: "I patched the IPS file to a matching ROM, so why does it not play in the emulator?"

I'm using a current form of zsnesw.
I downloaded the IPS file for Demo World from here (FuSoYa's Niche.
I used smwcentral's online Clean Rom Verifier.

LIPS tells me the patch is successful, but when I then open the rom on zsnesw, CHKSUM is a FAIL, and the screen stays black.

Could you help me please?

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Try opening it in Lunar Magic, then moving something to a different spot and then back again. This will let you save it, and LM auto-corrects the Checksum.
Originally posted by Demo World hack description
Note: The ROM must be expanded by Lunar Expand to 48 mbit before applying the patch.


This only applies to Demo World; don't do this with other hacks unless specified to do so.
Layout by Mirann <3
You need Lunar Expand to expand your SMW ROM to 6MB ExHiROM (the first option). After that, just apply the patch and it should work. Have fun with the hack, it's a classic.

Hope you enjoy it here.
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Interested in MushROMs? View its progress, source code, and make contributions here.

Why do you need to expand the ROM for an IPS of Demo World to work? Does it not work to just create an IPS of the Demo World ROM against a regular SMW ROM? I tried that once and it works just fine.
FuSoYa expanded the SMW ROM to ExHiROM. So all the contents were moved around. Thus, creating an IPS patch from an unexpanded SMW ROM would contain most of the original data and therefore be illegal.
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Interested in MushROMs? View its progress, source code, and make contributions here.

Thank you for your help! :)

I was a member quite a while ago, but stopped visiting when my computer crashed. I have a new one now.

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Forum Index - SMW Hacking - SMW Hacking Help - LIPS successfully patches, but CHKSUM is a FAIL.

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