diff --git a/firmware/.cargo/config.toml b/firmware/.cargo/config.toml
index a88825f..f59a45d 100644
--- a/firmware/.cargo/config.toml
+++ b/firmware/.cargo/config.toml
@@ -2,7 +2,7 @@
 target = "thumbv6m-none-eabi"
 
 [target.thumbv6m-none-eabi]
-runner = "probe-rs run --chip STM32F042C4T6"
+runner = "probe-rs run --chip STM32F042C4Tx"
 rustflags = [
     "-C", "link-arg=-Tlink.x",
     "-C", "link-arg=--nmagic",
diff --git a/firmware/src/main.rs b/firmware/src/main.rs
index 31ebbf9..653633e 100644
--- a/firmware/src/main.rs
+++ b/firmware/src/main.rs
@@ -31,15 +31,15 @@ fn main() -> ! {
 
     // Configure PA5 as push-pull output (common LED pin)
     let mut led = cortex_m::interrupt::free(|cs| {
-        gpioa.pa5.into_push_pull_output(cs)
+        gpioa.pa9.into_push_pull_output(cs)
     });
     
     // Blink loop
     loop {
         led.set_high().ok();
-        delay.delay_ms(500u16);
+        delay.delay_ms(2000u16);
         
         led.set_low().ok();
-        delay.delay_ms(500u16);
+        delay.delay_ms(2000u16);
     }
 }
\ No newline at end of file