diff --git a/firmware/src/main.rs b/firmware/src/main.rs
index 0cabe29..2000a1e 100644
--- a/firmware/src/main.rs
+++ b/firmware/src/main.rs
@@ -2,10 +2,11 @@
 #![no_main]
 
 use embassy_executor::Spawner;
-use embassy_futures::select::{select_array, select4};
+use embassy_futures::select::select_array;
 use embassy_rp::gpio::{Input, Level, Output, Pull};
 use embassy_rp::pwm::{self, Pwm};
-use embassy_time::{Delay, Timer};
+use embassy_rp::rom_data::reset_to_usb_boot;
+use embassy_time::Delay;
 use embedded_hal_bus::spi::ExclusiveDevice;
 use heapless::String;
 use mipidsi::interface::SpiInterface;
@@ -27,7 +28,7 @@ use {defmt_rtt as _, panic_probe as _};
 const DISPLAY_FREQ: u32 = 64_000_000;
 
 #[embassy_executor::main]
-async fn main(_spawner: Spawner) -> ! {
+async fn main(spawner: Spawner) -> ! {
     let p = embassy_rp::init(Default::default());
 
     // display SPI
@@ -90,7 +91,7 @@ async fn main(_spawner: Spawner) -> ! {
     let _btn_a = Input::new(p.PIN_12, Pull::Up);
     let _btn_b = Input::new(p.PIN_13, Pull::Up);
     // let _btn_x = Input::new(p.PIN_14, Pull::Up);
-    let _btn_y = Input::new(p.PIN_15, Pull::Up);
+    let btn_y = Input::new(p.PIN_15, Pull::Up);
 
     let mut btn_f1 = Input::new(p.PIN_11, Pull::Up);
     let mut btn_f2 = Input::new(p.PIN_14, Pull::Up);
@@ -114,6 +115,8 @@ async fn main(_spawner: Spawner) -> ! {
 
     let mut last_state = None;
 
+    spawner.spawn(dfu_button(btn_y)).ok();
+
     loop {
         let state = [
             btn_f1.is_low(),
@@ -135,3 +138,9 @@ async fn main(_spawner: Spawner) -> ! {
         .await;
     }
 }
+
+#[embassy_executor::task]
+async fn dfu_button(mut btn_y: Input<'static>) {
+    btn_y.wait_for_falling_edge().await;
+    reset_to_usb_boot(0, 0);
+}