diff --git a/higan/emulator/emulator.hpp b/higan/emulator/emulator.hpp
index 76fdac4e..e07b8fa6 100644
--- a/higan/emulator/emulator.hpp
+++ b/higan/emulator/emulator.hpp
@@ -9,7 +9,7 @@ using namespace nall;
 
 namespace Emulator {
   static const string Name = "higan";
-  static const string Version = "098.19";
+  static const string Version = "099";
   static const string Author = "byuu";
   static const string License = "GPLv3";
   static const string Website = "http://byuu.org/";
diff --git a/higan/fc/fc.hpp b/higan/fc/fc.hpp
index 20d5a570..6e7bc582 100644
--- a/higan/fc/fc.hpp
+++ b/higan/fc/fc.hpp
@@ -8,7 +8,7 @@
 
 namespace Famicom {
   namespace Info {
-    static const uint SerializerVersion = 2;
+    static const uint SerializerVersion = 3;
   }
 }
 
diff --git a/higan/gb/gb.hpp b/higan/gb/gb.hpp
index 0338cba6..3e93cd47 100644
--- a/higan/gb/gb.hpp
+++ b/higan/gb/gb.hpp
@@ -8,7 +8,7 @@
 
 namespace GameBoy {
   namespace Info {
-    static const uint SerializerVersion = 4;
+    static const uint SerializerVersion = 5;
   }
 }
 
diff --git a/higan/gb/ppu/mmio.cpp b/higan/gb/ppu/mmio.cpp
index 7c8c86a6..b77b41b2 100644
--- a/higan/gb/ppu/mmio.cpp
+++ b/higan/gb/ppu/mmio.cpp
@@ -140,8 +140,9 @@ auto PPU::mmio_write(uint16 addr, uint8 data) -> void {
     status.interrupt_vblank = data & 0x10;
     status.interrupt_hblank = data & 0x08;
 
-    //hardware bug: writes to STAT on DMG,SGB during blanking triggers STAT IRQ
-    if(!system.cgb() && status.mode < 2) {
+    //hardware bug: writes to STAT on DMG,SGB during vblank triggers STAT IRQ
+    //note: this behavior isn't entirely correct; more research is needed ...
+    if(!system.cgb() && status.mode == 1) {
       cpu.raise(CPU::Interrupt::Stat);
     }
 
diff --git a/higan/gb/ppu/ppu.cpp b/higan/gb/ppu/ppu.cpp
index bad9ed05..e7487bcc 100644
--- a/higan/gb/ppu/ppu.cpp
+++ b/higan/gb/ppu/ppu.cpp
@@ -50,7 +50,6 @@ auto PPU::main() -> void {
 }
 
 auto PPU::mode(uint mode) -> void {
-  if(!enabled()) mode = 1;  //force blank
   status.mode = mode;
 }
 
diff --git a/higan/gba/gba.hpp b/higan/gba/gba.hpp
index 4d2a68a4..7dba458e 100644
--- a/higan/gba/gba.hpp
+++ b/higan/gba/gba.hpp
@@ -8,7 +8,7 @@
 
 namespace GameBoyAdvance {
   namespace Info {
-    static const uint SerializerVersion = 3;
+    static const uint SerializerVersion = 4;
   }
 }
 
diff --git a/higan/ws/ws.hpp b/higan/ws/ws.hpp
index 6c089fc2..76ec2a4a 100644
--- a/higan/ws/ws.hpp
+++ b/higan/ws/ws.hpp
@@ -8,7 +8,7 @@
 
 namespace WonderSwan {
   namespace Info {
-    static const uint SerializerVersion = 1;
+    static const uint SerializerVersion = 2;
   }
 }