diff --git a/main.c b/main.c
--- a/main.c
+++ b/main.c
@@ -65,7 +65,10 @@ SPI_HandleTypeDef hspi1;
 static __IO uint32_t TimingDelay;
 
 
-
+void deinit(void)
+{
+    HAL_DeInit();
+}
 
 volatile int i=0;
 int main(void)
@@ -519,8 +522,17 @@ void machine()
                         state = STATE_SETP;
                         break;
                     case 0:
+                    {
+                        ssd1306_clearscreen();
+                        ssd1306_DrawString("Entering Bootloader", 1, 0);
+                        ssd1306_DrawString("(hopefully)", 2, 0);
+                        HAL_Delay(1000);
+                        *((unsigned long *)0x200017F0) = 0xDEADBEEF; // 6KB STM32F042
+                        NVIC_SystemReset();
+
                         state = STATE_IDLE;
-                        break;
+                    } break;
+
                     default:
                         state = STATE_PREHEAT_BREW;
                 }