diff --git a/docs/games/iidx31/setup.md b/docs/games/iidx31/setup.md
index 7d541a6..ff80ead 100644
--- a/docs/games/iidx31/setup.md
+++ b/docs/games/iidx31/setup.md
@@ -82,7 +82,7 @@
 		<soft>
 			<model __type="str">LDJ</model>
 			<dest __type="str">J</dest>
-			<spec __type="str">B</spec>
+			<spec __type="str">E</spec>
 			<rev __type="str">A</rev>
 			<ext __type="str">2024050700</ext>
 		</soft>