diff --git a/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/LibmGBA.cs b/src/BizHawk.Emulation.Cores/Consoles/Nintendo/GBA/LibmGBA.cs
index 838e8fa1e2..e3f5df517d 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(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(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(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 3ee23b6b57..569f64cd14 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(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 d4d05c8d17..178e1dd36c 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(_executeCallback);
 			}
 			else
 			{
-				MGBAHawk.ZZHacky.BizSetMemCallback(container.CallDelegate);
+				// MGBAHawk.ZZHacky.BizSetMemCallback(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(null);
 					}
 				}
 				else if (MGBAHawk.ZZHacky.BizClearWatchpoint(_mgba.Core, cbToRemove.ID))