diff --git a/platforms/android/arm64-v8a/external.sh b/platforms/android/arm64-v8a/external.sh
index ed8ad81..3a14e96 100755
--- a/platforms/android/arm64-v8a/external.sh
+++ b/platforms/android/arm64-v8a/external.sh
@@ -4,7 +4,7 @@ set -e
 
 CARGS_SHA=5949a20a926e902931de4a32adaad9f19c76f251
 LIBZEDMD_SHA=6395357ce400036432587b4f696a2fac14ddd21a
-LIBSERUM_SHA=2a11b2d261a701f22aa536befd3d9adfdff94e5e
+LIBSERUM_SHA=f15cfa81cae49114efc5ee4edfcf67ec91a52579
 SOCKPP_SHA=e6c4688a576d95f42dd7628cefe68092f6c5cd0f
 LIBPUPDMD_SHA=c640ea2cec94097e8baefee9dab39266970e4405
 LIBFRAMEUTIL_SHA=30048ca23d41ca0a8f7d5ab75d3f646a19a90182
diff --git a/platforms/ios/arm64/external.sh b/platforms/ios/arm64/external.sh
index 829f62c..c808971 100755
--- a/platforms/ios/arm64/external.sh
+++ b/platforms/ios/arm64/external.sh
@@ -4,7 +4,7 @@ set -e
 
 CARGS_SHA=5949a20a926e902931de4a32adaad9f19c76f251
 LIBZEDMD_SHA=6395357ce400036432587b4f696a2fac14ddd21a
-LIBSERUM_SHA=2a11b2d261a701f22aa536befd3d9adfdff94e5e
+LIBSERUM_SHA=f15cfa81cae49114efc5ee4edfcf67ec91a52579
 SOCKPP_SHA=e6c4688a576d95f42dd7628cefe68092f6c5cd0f
 LIBPUPDMD_SHA=c640ea2cec94097e8baefee9dab39266970e4405
 LIBFRAMEUTIL_SHA=30048ca23d41ca0a8f7d5ab75d3f646a19a90182
diff --git a/platforms/linux/aarch64/external.sh b/platforms/linux/aarch64/external.sh
index 73b781e..acf4ca3 100755
--- a/platforms/linux/aarch64/external.sh
+++ b/platforms/linux/aarch64/external.sh
@@ -4,7 +4,7 @@ set -e
 
 CARGS_SHA=5949a20a926e902931de4a32adaad9f19c76f251
 LIBZEDMD_SHA=6395357ce400036432587b4f696a2fac14ddd21a
-LIBSERUM_SHA=2a11b2d261a701f22aa536befd3d9adfdff94e5e
+LIBSERUM_SHA=f15cfa81cae49114efc5ee4edfcf67ec91a52579
 SOCKPP_SHA=e6c4688a576d95f42dd7628cefe68092f6c5cd0f
 LIBPUPDMD_SHA=c640ea2cec94097e8baefee9dab39266970e4405
 LIBFRAMEUTIL_SHA=30048ca23d41ca0a8f7d5ab75d3f646a19a90182
diff --git a/platforms/linux/x64/external.sh b/platforms/linux/x64/external.sh
index 213e418..ec0f148 100755
--- a/platforms/linux/x64/external.sh
+++ b/platforms/linux/x64/external.sh
@@ -4,7 +4,7 @@ set -e
 
 CARGS_SHA=5949a20a926e902931de4a32adaad9f19c76f251
 LIBZEDMD_SHA=6395357ce400036432587b4f696a2fac14ddd21a
-LIBSERUM_SHA=2a11b2d261a701f22aa536befd3d9adfdff94e5e
+LIBSERUM_SHA=f15cfa81cae49114efc5ee4edfcf67ec91a52579
 SOCKPP_SHA=e6c4688a576d95f42dd7628cefe68092f6c5cd0f
 LIBPUPDMD_SHA=c640ea2cec94097e8baefee9dab39266970e4405
 LIBFRAMEUTIL_SHA=30048ca23d41ca0a8f7d5ab75d3f646a19a90182
diff --git a/platforms/macos/arm64/external.sh b/platforms/macos/arm64/external.sh
index 1de2aac..61f6cd1 100755
--- a/platforms/macos/arm64/external.sh
+++ b/platforms/macos/arm64/external.sh
@@ -4,7 +4,7 @@ set -e
 
 CARGS_SHA=5949a20a926e902931de4a32adaad9f19c76f251
 LIBZEDMD_SHA=6395357ce400036432587b4f696a2fac14ddd21a
-LIBSERUM_SHA=2a11b2d261a701f22aa536befd3d9adfdff94e5e
+LIBSERUM_SHA=f15cfa81cae49114efc5ee4edfcf67ec91a52579
 SOCKPP_SHA=e6c4688a576d95f42dd7628cefe68092f6c5cd0f
 LIBPUPDMD_SHA=c640ea2cec94097e8baefee9dab39266970e4405
 LIBFRAMEUTIL_SHA=30048ca23d41ca0a8f7d5ab75d3f646a19a90182
diff --git a/platforms/macos/x64/external.sh b/platforms/macos/x64/external.sh
index c9f1e02..34f93ed 100755
--- a/platforms/macos/x64/external.sh
+++ b/platforms/macos/x64/external.sh
@@ -4,7 +4,7 @@ set -e
 
 CARGS_SHA=5949a20a926e902931de4a32adaad9f19c76f251
 LIBZEDMD_SHA=6395357ce400036432587b4f696a2fac14ddd21a
-LIBSERUM_SHA=2a11b2d261a701f22aa536befd3d9adfdff94e5e
+LIBSERUM_SHA=f15cfa81cae49114efc5ee4edfcf67ec91a52579
 SOCKPP_SHA=e6c4688a576d95f42dd7628cefe68092f6c5cd0f
 LIBPUPDMD_SHA=c640ea2cec94097e8baefee9dab39266970e4405
 LIBFRAMEUTIL_SHA=30048ca23d41ca0a8f7d5ab75d3f646a19a90182
diff --git a/platforms/tvos/arm64/external.sh b/platforms/tvos/arm64/external.sh
index 40eac8d..1db4894 100755
--- a/platforms/tvos/arm64/external.sh
+++ b/platforms/tvos/arm64/external.sh
@@ -4,7 +4,7 @@ set -e
 
 CARGS_SHA=5949a20a926e902931de4a32adaad9f19c76f251
 LIBZEDMD_SHA=6395357ce400036432587b4f696a2fac14ddd21a
-LIBSERUM_SHA=2a11b2d261a701f22aa536befd3d9adfdff94e5e
+LIBSERUM_SHA=f15cfa81cae49114efc5ee4edfcf67ec91a52579
 SOCKPP_SHA=e6c4688a576d95f42dd7628cefe68092f6c5cd0f
 LIBPUPDMD_SHA=c640ea2cec94097e8baefee9dab39266970e4405
 LIBFRAMEUTIL_SHA=30048ca23d41ca0a8f7d5ab75d3f646a19a90182
diff --git a/platforms/win/x64/external.sh b/platforms/win/x64/external.sh
index f7efa5f..5a0974e 100755
--- a/platforms/win/x64/external.sh
+++ b/platforms/win/x64/external.sh
@@ -4,7 +4,7 @@ set -e
 
 CARGS_SHA=5949a20a926e902931de4a32adaad9f19c76f251
 LIBZEDMD_SHA=6395357ce400036432587b4f696a2fac14ddd21a
-LIBSERUM_SHA=2a11b2d261a701f22aa536befd3d9adfdff94e5e
+LIBSERUM_SHA=f15cfa81cae49114efc5ee4edfcf67ec91a52579
 SOCKPP_SHA=e6c4688a576d95f42dd7628cefe68092f6c5cd0f
 LIBPUPDMD_SHA=c640ea2cec94097e8baefee9dab39266970e4405
 LIBFRAMEUTIL_SHA=30048ca23d41ca0a8f7d5ab75d3f646a19a90182
diff --git a/platforms/win/x86/external.sh b/platforms/win/x86/external.sh
index c82b732..f26b2de 100755
--- a/platforms/win/x86/external.sh
+++ b/platforms/win/x86/external.sh
@@ -4,7 +4,7 @@ set -e
 
 CARGS_SHA=5949a20a926e902931de4a32adaad9f19c76f251
 LIBZEDMD_SHA=6395357ce400036432587b4f696a2fac14ddd21a
-LIBSERUM_SHA=2a11b2d261a701f22aa536befd3d9adfdff94e5e
+LIBSERUM_SHA=f15cfa81cae49114efc5ee4edfcf67ec91a52579
 SOCKPP_SHA=e6c4688a576d95f42dd7628cefe68092f6c5cd0f
 LIBPUPDMD_SHA=c640ea2cec94097e8baefee9dab39266970e4405
 LIBFRAMEUTIL_SHA=30048ca23d41ca0a8f7d5ab75d3f646a19a90182
diff --git a/src/DMD.cpp b/src/DMD.cpp
index fd18e81..d12e8f8 100644
--- a/src/DMD.cpp
+++ b/src/DMD.cpp
@@ -814,7 +814,7 @@ void DMD::SerumThread()
       {
         uint32_t result = Serum_Rotate();
 
-        Log(DMDUtil_LogLevel_DEBUG, "Serum: rotation=%lu, flags=%lu", m_pSerum->rotationtimer, result & 0xfffff0000);
+        Log(DMDUtil_LogLevel_DEBUG, "Serum: rotation=%lu, flags=%lu", m_pSerum->rotationtimer, result >> 16);
 
         QueueSerumFrames(lastDmdUpdate, result & 0x10000, result & 0x20000);