diff --git a/download.py b/download.py
index 36007fa..16221da 100644
--- a/download.py
+++ b/download.py
@@ -1,18 +1,26 @@
 import logging
 import subprocess
 from pathlib import Path
-from typing import Sequence, Union
+from typing import Sequence
+from typing import Union
 
 logging.basicConfig(level=logging.DEBUG)
 
 logger = logging.getLogger("Download")
 
+# APPLICATION_NAME = "nucleo-wb55-ble"
 APPLICATION_NAME = "nucleo-wb55-dongle-ble"
-#APPLICATION_NAME = "nucleo-wb55-dongle-usb"
-#APPLICATION_NAME = "nucleo-wb55-dongle-blinky"
-PORT="USB1"
-CLI_PATH = Path("/Applications/STMicroelectronics/STM32Cube/STM32CubeProgrammer/STM32CubeProgrammer.app/Contents/MacOs/bin/STM32_Programmer_CLI")
-ELF_FILE = Path.home() / Path(f"Documents/git/nucleo-playground-workspace/{APPLICATION_NAME}/Debug/{APPLICATION_NAME}.elf")
+# APPLICATION_NAME = "nucleo-wb55-dongle-usb"
+# APPLICATION_NAME = "nucleo-wb55-dongle-blinky"
+PORT = "USB1"
+CLI_PATH = Path(
+    "/Applications/STMicroelectronics/STM32Cube/STM32CubeProgrammer/"
+    "STM32CubeProgrammer.app/Contents/MacOs/bin/STM32_Programmer_CLI",
+)
+ELF_FILE = Path.home() / Path(
+    f"Documents/git/nucleo-playground-workspace/{APPLICATION_NAME}/"
+    "Debug/{APPLICATION_NAME}.elf",
+)
 
 
 def execute_command(
@@ -26,17 +34,17 @@ def execute_command(
     )
 
     def _poll_stdout() -> str:
-        return process.stdout.readline().decode()
+        return process.stdout.readline().decode()  # type: ignore
 
     exit_code = None
     command_logger = logger.getChild("Programmer")
     while exit_code is None:
-        for line in iter(_poll_stdout, ''):
+        for line in iter(_poll_stdout, ""):
             command_logger.info(line.rstrip())
 
         exit_code = process.poll()
 
-    for line in iter(_poll_stdout, ''):
+    for line in iter(_poll_stdout, ""):
         command_logger.info(line.rstrip())  # flush pipe
 
     logger.debug(f"Coomand finished with exit code {exit_code}")
@@ -48,7 +56,8 @@ def download():
         str(CLI_PATH),
         "-c",
         f"port={PORT}",
-        "-w", str(ELF_FILE),
+        "-w",
+        str(ELF_FILE),
     ]
     execute_command(command)