diff --git a/README.md b/README.md
index 337240c..f30bf93 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,9 @@
 # Usage Instructions
  * Plug HDMI into Beamer
  * Plug USB into Computer
- * booting the Raspberry takes approximately ?? seconds. the green led will light up when ready
+ * booting the Raspberry takes approximately 25 seconds. the green led will light up when ready
  * start freeze.exe from the (now attached) USB-Drive
- * press WindowsKey+Y or Alt+PRINTSCREEN to take a screenshot
+ * press button on device or ALT+X or Alt+PRINTSCREEN to take a screenshot
  * simply unplug after use
 
 ## Other features
@@ -84,7 +84,5 @@ mount -o remount,rw /boot
 
 
 ## ToDo
- * dritte led für boot?: dtoverlay=gpio-poweroff,gpiopin=23,active_low
- * gpio pins ändern
- * screenshot-tool option für sofortigen screenshot
- * hdmi regelmäßig überprüfen ob inaktiv
\ No newline at end of file
+ * bessere tastenkombination
+ * hdmi regelmäßig überprüfen ob inaktiv
diff --git a/raspberry-environment/display.py b/raspberry-environment/display.py
index 9d89154..b9b6084 100644
--- a/raspberry-environment/display.py
+++ b/raspberry-environment/display.py
@@ -129,7 +129,7 @@ def os_echo_bin(filename, string):
 def send_keypress():
   with open('/dev/hidg0', 'wb') as f:
     #f.write(bytearray(b'\x00\x00\x04\x00\x00\x00\x00\x00')) #press the A-button
-    f.write(bytearray(b'\x08\x00\x1C\x00\x00\x00\x00\x00')) #press Win+Y
+    f.write(bytearray(b'\x04\x00\x1B\x00\x00\x00\x00\x00')) #press Alt+X
     time.sleep(0.05)
     f.write(bytearray(b'\x00\x00\x00\x00\x00\x00\x00\x00'))  #release all keys
 
diff --git a/windows-snapshot-tool/bin/freeze.exe b/windows-snapshot-tool/bin/freeze.exe
index cd783df..8ea7bbc 100755
Binary files a/windows-snapshot-tool/bin/freeze.exe and b/windows-snapshot-tool/bin/freeze.exe differ
diff --git a/windows-snapshot-tool/src/main.cpp b/windows-snapshot-tool/src/main.cpp
index 21bc0a7..cac1fc5 100644
--- a/windows-snapshot-tool/src/main.cpp
+++ b/windows-snapshot-tool/src/main.cpp
@@ -93,9 +93,9 @@ int WINAPI WinMain (HINSTANCE hThisInstance,
     /*Initialize the NOTIFYICONDATA structure only once*/
     InitNotifyIconData();
 
-    /* register hotkey. 0x59 is 'y' so win+y or print                                   *
+    /* register hotkey. 0x58 is 'x' so alt+x or print                                   *
      * see: https://docs.microsoft.com/de-de/windows/desktop/inputdev/virtual-key-codes */
-    if (!RegisterHotKey(NULL, WM_HOTKEY_FREEZE, MOD_WIN, 0x59)
+    if (!RegisterHotKey(NULL, WM_HOTKEY_FREEZE, MOD_ALT, 0x58)
      || !RegisterHotKey(NULL, WM_HOTKEY_FREEZE, MOD_ALT, 0x2c)) {
         FatalAppExit(0, TEXT("Couldn't register hotkey!"));
     }