diff --git a/rpcs3/Emu/Cell/PPUInterpreter.cpp b/rpcs3/Emu/Cell/PPUInterpreter.cpp
index e50db64530..9806f57e6b 100644
--- a/rpcs3/Emu/Cell/PPUInterpreter.cpp
+++ b/rpcs3/Emu/Cell/PPUInterpreter.cpp
@@ -4405,7 +4405,15 @@ bool ppu_interpreter::LBZU(ppu_thread& ppu, ppu_opcode_t op)
 bool ppu_interpreter::STW(ppu_thread& ppu, ppu_opcode_t op)
 {
 	const u64 addr = op.ra ? ppu.gpr[op.ra] + op.simm16 : op.simm16;
-	vm::write32(vm::cast(addr, HERE), (u32)ppu.gpr[op.rs]);
+	const u32 value = (u32)ppu.gpr[op.rs];
+	vm::write32(vm::cast(addr, HERE), value);
+
+	//Insomniac engine v3 & v4 (newer R&C, Fuse, Resitance 3)
+	if (UNLIKELY(value == 0xAAAAAAAA))
+	{
+		vm::reservation_update(addr, 128);
+	}
+
 	return true;
 }
 
diff --git a/rpcs3/Emu/Cell/PPUThread.cpp b/rpcs3/Emu/Cell/PPUThread.cpp
index 95e8d8e24a..b611e7fff7 100644
--- a/rpcs3/Emu/Cell/PPUThread.cpp
+++ b/rpcs3/Emu/Cell/PPUThread.cpp
@@ -1309,6 +1309,7 @@ extern void ppu_initialize(const ppu_module& info)
 			{ "__lvrx", s_use_ssse3 ? (u64)&sse_cellbe_lvrx : (u64)&sse_cellbe_lvrx_v0 },
 			{ "__stvlx", s_use_ssse3 ? (u64)&sse_cellbe_stvlx : (u64)&sse_cellbe_stvlx_v0 },
 			{ "__stvrx", s_use_ssse3 ? (u64)&sse_cellbe_stvrx : (u64)&sse_cellbe_stvrx_v0 },
+			{ "__resupdate", (u64)&vm::reservation_update },
 		};
 
 		for (u64 index = 0; index < 1024; index++)
diff --git a/rpcs3/Emu/Cell/PPUTranslator.cpp b/rpcs3/Emu/Cell/PPUTranslator.cpp
index 37230509c4..63803e17b8 100644
--- a/rpcs3/Emu/Cell/PPUTranslator.cpp
+++ b/rpcs3/Emu/Cell/PPUTranslator.cpp
@@ -3407,7 +3407,18 @@ void PPUTranslator::STW(ppu_opcode_t op)
 		m_rel = nullptr;
 	}
 
-	WriteMemory(op.ra ? m_ir->CreateAdd(GetGpr(op.ra), imm) : imm, GetGpr(op.rs, 32));
+	const auto value = GetGpr(op.rs, 32);
+	const auto addr = op.ra ? m_ir->CreateAdd(GetGpr(op.ra), imm) : imm;
+	WriteMemory(addr, value);
+
+	//Insomniac engine v3 & v4 (newer R&C, Fuse, Resitance 3)
+	if (auto ci = llvm::dyn_cast<ConstantInt>(value))
+	{
+		if (ci->getZExtValue() == 0xAAAAAAAA)
+		{
+			Call(GetType<void>(), "__resupdate", m_thread, addr, m_ir->getInt32(128));
+		}
+	}
 }
 
 void PPUTranslator::STWU(ppu_opcode_t op)