Minor changes

bootloader/getHex.py

@@ -1,15 +1,19 @@
-from sys import argv,exit as exitc
+from sys import argv, exit as exitc
 
-if len(argv) != 2:
+if len(argv) > 2:
     print('Please inform just one file!')
-    exitc(1)
+    exitc(2)
+
+elif len(argv) != 2:
+    print('Plase inform a file!')
+    exitc(3)
 
 try:
     file = open(argv[1], 'rb')
 
 except FileNotFoundError:
     print('The specified file was not found!')
-    exitc(2)
+    exitc(4)
 
 content = file.read()
 file.close()