diff --git a/mgba b/mgba
index fc7b04b5f0..2876df5580 160000
--- a/mgba
+++ b/mgba
@@ -1 +1 @@
-Subproject commit fc7b04b5f081945099f83ad8fe51539ada4adfe9
+Subproject commit 2876df558067b85877cb4bb0241db947a92b7cae
diff --git a/output/dll/mgba.dll b/output/dll/mgba.dll
index 94d9ccf264..3907db16bc 100644
Binary files a/output/dll/mgba.dll and b/output/dll/mgba.dll differ
diff --git a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/LibmGBA.cs b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/LibmGBA.cs
index e3f5df517d..e32c533484 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/LibmGBA.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/LibmGBA.cs
@@ -183,18 +183,18 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 
 		[UnmanagedFunctionPointer(cc)]
 		public delegate void TraceCallback(string msg);
-		// [BizImport(cc, Compatibility = true)]
-		// public abstract void BizSetTraceCallback(TraceCallback cb);
+		[BizImport(cc, Compatibility = true)]
+		public abstract void BizSetTraceCallback(IntPtr ctx, TraceCallback cb);
 
 		[UnmanagedFunctionPointer(cc)]
 		public delegate void MemCallback(uint addr, mWatchpointType type, uint oldValue, uint newValue);
-		// [BizImport(cc, Compatibility = true)]
-		// public abstract void BizSetMemCallback(MemCallback cb);
+		[BizImport(cc, Compatibility = true)]
+		public abstract void BizSetMemCallback(IntPtr ctx, MemCallback cb);
 
 		[UnmanagedFunctionPointer(cc)]
 		public delegate void ExecCallback(uint pc);
-		// [BizImport(cc, Compatibility = true)]
-		// public abstract void BizSetExecCallback(ExecCallback cb);
+		[BizImport(cc, Compatibility = true)]
+		public abstract void BizSetExecCallback(IntPtr ctx, ExecCallback cb);
 
 		[BizImport(cc, Compatibility = true)]
 		public abstract int BizSetWatchpoint(IntPtr ctx, uint addr, mWatchpointType type);
diff --git a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/MGBAHawk.cs b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/MGBAHawk.cs
index 569f64cd14..a655ce0cca 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/MGBAHawk.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/MGBAHawk.cs
@@ -125,7 +125,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 				WireMemoryDomainPointers();
 			}
 
-			// LibmGBA.BizSetTraceCallback(Tracer.Enabled ? _tracecb : null);
+			LibmGBA.BizSetTraceCallback(Core, Tracer.Enabled ? _tracecb : null);
 
 			IsLagFrame = LibmGBA.BizAdvance(
 				Core,
diff --git a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/MGBAMemoryCallbackSystem.cs b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/MGBAMemoryCallbackSystem.cs
index 178e1dd36c..482a480ae2 100644
--- a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/MGBAMemoryCallbackSystem.cs
+++ b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/MGBAMemoryCallbackSystem.cs
@@ -56,11 +56,11 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 			{
 				_executeCallback = RunExecCallback;
 				_execPcs[callback.Address.Value] = callback;
-				// MGBAHawk.ZZHacky.BizSetExecCallback(_executeCallback);
+				MGBAHawk.ZZHacky.BizSetExecCallback(_mgba.Core, _executeCallback);
 			}
 			else
 			{
-				// MGBAHawk.ZZHacky.BizSetMemCallback(container.CallDelegate);
+				MGBAHawk.ZZHacky.BizSetMemCallback(_mgba.Core, container.CallDelegate);
 				container.ID = MGBAHawk.ZZHacky.BizSetWatchpoint(_mgba.Core, callback.Address.Value, container.WatchPointType);
 			}
 
@@ -79,7 +79,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.GBA
 					if (_callbacks.All(cb => cb.Callback.Type != MemoryCallbackType.Execute))
 					{
 						_executeCallback = null;
-						// MGBAHawk.ZZHacky.BizSetExecCallback(null);
+						MGBAHawk.ZZHacky.BizSetExecCallback(_mgba.Core, null);
 					}
 				}
 				else if (MGBAHawk.ZZHacky.BizClearWatchpoint(_mgba.Core, cbToRemove.ID))