From: chaoskagami <kagami@chaos.moe>
Date: Thu, 27 Oct 2016 15:19:03 +0000 (-0400)
Subject: Update anti-DG.
X-Git-Tag: v0.3.1~68
X-Git-Url: https://chaos.moe/g/?a=commitdiff_plain;h=f9ba3917f7f7190e1e7258686dc3869afb9d0d18;p=corbenik%2Fcorbenik.git

Update anti-DG.

I'll switch to a code patch later; I feel patching data for this seems error-prone.
---

diff --git a/patch/aadowngrade.pco b/patch/aadowngrade.pco
index 3888cff..4f6fa6c 100644
--- a/patch/aadowngrade.pco
+++ b/patch/aadowngrade.pco
@@ -9,11 +9,21 @@
 
 # Anti-anti-downgrade fix.
 
+# How this works: The FIRM has a list of titleids in it to verify
+# that downgrade is not performed. This is verified in a function
+# that loops through each of the titleids on an install.
+
+# The downgrade check ends when a zero is encountered. Luma patches
+# this check by zeroing the first titleid.
+
+# The "first" revision of this patched the code for said check to never 
+# execute. Sadly, the code is VERY different in 11.2...
+
 # Relative to arm9 segment
 rel  section2
 
-# We want to patch the fifth byte of this pattern.
-find 890a814202D2
+find ff000002
 abortnf
-fwd  05
-set  E0
+fwd  01
+set  0000000000000000
+