diff --git a/build/nandfirm/menu-launcher/ARM9/main.c b/build/nandfirm/menu-launcher/ARM9/main.c
index 7c5c7eea..440f9fb9 100644
--- a/build/nandfirm/menu-launcher/ARM9/main.c
+++ b/build/nandfirm/menu-launcher/ARM9/main.c
@@ -331,7 +331,9 @@ void TwlMain( void )
         }
         OS_TPrintf("\n[ARM9] End\n");
         PXI_NotifyID( FIRM_PXI_ID_NULL );
-        OS_SetTick(0);
+        reg_OS_TM3CNT_H = 0;
+        reg_OS_TM3CNT_L = 0;
+        reg_OS_TM3CNT_H = (u16)(REG_OS_TM0CNT_H_E_MASK | OS_TIMER_PRESCALER_1024);
     }
 #endif
 
diff --git a/build/nandfirm/menu-launcher2/ARM9/main.c b/build/nandfirm/menu-launcher2/ARM9/main.c
index 20421863..913e8dc1 100644
--- a/build/nandfirm/menu-launcher2/ARM9/main.c
+++ b/build/nandfirm/menu-launcher2/ARM9/main.c
@@ -339,7 +339,9 @@ void TwlMain( void )
         }
         OS_TPrintf("\n[ARM9] End\n");
         PXI_NotifyID( FIRM_PXI_ID_NULL );
-        OS_SetTick(0);
+        reg_OS_TM3CNT_H = 0;
+        reg_OS_TM3CNT_L = 0;
+        reg_OS_TM3CNT_H = (u16)(REG_OS_TM0CNT_H_E_MASK | OS_TIMER_PRESCALER_1024);
     }
 #endif
 
diff --git a/build/systemMenu_RED/Launcher/ARM9/src/main.c b/build/systemMenu_RED/Launcher/ARM9/src/main.c
index cfd3ac98..5a030ebf 100644
--- a/build/systemMenu_RED/Launcher/ARM9/src/main.c
+++ b/build/systemMenu_RED/Launcher/ARM9/src/main.c
@@ -79,7 +79,7 @@ void TwlMain( void )
 
 #ifdef DEBUG_LAUNCHER_DUMP
     // you should comment out to clear GX/G2/DMA/TM/PAD register in reboot.c to retreive valid boot time
-    STD_TSPrintf((char*)0x02FFCFD0, "\nLauncher Boot Time: %lld usec\n", OS_TicksToMicroSeconds(OS_GetTick()));
+    STD_TSPrintf((char*)0x02FFCFC0, "\nLauncher Boot Time: %lld usec\n", OS_TicksToMicroSeconds(reg_OS_TM3CNT_L * (1024/64)));
     STD_TSPrintf((char*)0x02FFCFF0, "HOTSTART(0x%08x): %02x\n", HW_NAND_FIRM_HOTSTART_FLAG, *(u8 *)HW_NAND_FIRM_HOTSTART_FLAG);
 #endif
     // システムメニュー初期化----------