I put the otherapp.bin in the steelhax folder, but there was a rop.bin, and I changed it to the 11.5 one. Should I not have?Shouldn't you use otherapp.bin for the steelhax exploit?
Also,
Try uninstalling & reinstalling the App as a whole. THEN redo the exploit.
Also, try removing any files associated with SubWars from the Data Manager (DLCs, Updates, Streetpass, etc.)
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Oh...The otherapp.bin SHOULD be in the Root of the SD Card.