diff --git a/Marlin/src/HAL/HAL_DUE/Tone.cpp b/Marlin/src/HAL/HAL_DUE/Tone.cpp
index f7549c4472a..b3d7e216988 100644
--- a/Marlin/src/HAL/HAL_DUE/Tone.cpp
+++ b/Marlin/src/HAL/HAL_DUE/Tone.cpp
@@ -5,6 +5,8 @@
  * Based on Sprinter and grbl.
  * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
+ * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
+ *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 3 of the License, or
diff --git a/Marlin/src/HAL/HAL_SAMD51/HAL.cpp b/Marlin/src/HAL/HAL_SAMD51/HAL.cpp
index e9f378b666b..32a6bad4cd3 100644
--- a/Marlin/src/HAL/HAL_SAMD51/HAL.cpp
+++ b/Marlin/src/HAL/HAL_SAMD51/HAL.cpp
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/HAL.h b/Marlin/src/HAL/HAL_SAMD51/HAL.h
index 7c6d7e37ee5..ca51e40d8fa 100644
--- a/Marlin/src/HAL/HAL_SAMD51/HAL.h
+++ b/Marlin/src/HAL/HAL_SAMD51/HAL.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/HAL_spi_SAMD51.cpp b/Marlin/src/HAL/HAL_SAMD51/HAL_spi_SAMD51.cpp
index b03aea0e4a2..5235d56cf91 100644
--- a/Marlin/src/HAL/HAL_SAMD51/HAL_spi_SAMD51.cpp
+++ b/Marlin/src/HAL/HAL_SAMD51/HAL_spi_SAMD51.cpp
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/HAL_timers_SAMD51.cpp b/Marlin/src/HAL/HAL_SAMD51/HAL_timers_SAMD51.cpp
index 8868acc874a..ea02e839fe7 100644
--- a/Marlin/src/HAL/HAL_SAMD51/HAL_timers_SAMD51.cpp
+++ b/Marlin/src/HAL/HAL_SAMD51/HAL_timers_SAMD51.cpp
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/HAL_timers_SAMD51.h b/Marlin/src/HAL/HAL_SAMD51/HAL_timers_SAMD51.h
index 37cdf7a9bd6..80c37d14af8 100644
--- a/Marlin/src/HAL/HAL_SAMD51/HAL_timers_SAMD51.h
+++ b/Marlin/src/HAL/HAL_SAMD51/HAL_timers_SAMD51.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
@@ -38,7 +38,7 @@ typedef uint32_t hal_timer_t;
 #define TEMP_TIMER_FREQUENCY   1000 // temperature interrupt frequency
 
 #define STEPPER_TIMER_RATE          HAL_TIMER_RATE   // frequency of stepper timer (HAL_TIMER_RATE / STEPPER_TIMER_PRESCALE)
-#define STEPPER_TIMER_TICKS_PER_US  ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per �s
+#define STEPPER_TIMER_TICKS_PER_US  ((STEPPER_TIMER_RATE) / 1000000) // stepper timer ticks per µs
 #define STEPPER_TIMER_PRESCALE      (CYCLES_PER_MICROSECOND / STEPPER_TIMER_TICKS_PER_US)
 
 #define PULSE_TIMER_RATE          STEPPER_TIMER_RATE
diff --git a/Marlin/src/HAL/HAL_SAMD51/MarlinSerial_AGCM4.cpp b/Marlin/src/HAL/HAL_SAMD51/MarlinSerial_AGCM4.cpp
index 5e582806d30..2da4d8c07e0 100644
--- a/Marlin/src/HAL/HAL_SAMD51/MarlinSerial_AGCM4.cpp
+++ b/Marlin/src/HAL/HAL_SAMD51/MarlinSerial_AGCM4.cpp
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/MarlinSerial_AGCM4.h b/Marlin/src/HAL/HAL_SAMD51/MarlinSerial_AGCM4.h
index 9f318709d7b..0768d8a04ef 100644
--- a/Marlin/src/HAL/HAL_SAMD51/MarlinSerial_AGCM4.h
+++ b/Marlin/src/HAL/HAL_SAMD51/MarlinSerial_AGCM4.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/SAMD51.h b/Marlin/src/HAL/HAL_SAMD51/SAMD51.h
index 242423f881e..d29d134c005 100644
--- a/Marlin/src/HAL/HAL_SAMD51/SAMD51.h
+++ b/Marlin/src/HAL/HAL_SAMD51/SAMD51.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/endstop_interrupts.h b/Marlin/src/HAL/HAL_SAMD51/endstop_interrupts.h
index 213489dac80..26c11b6e8b1 100644
--- a/Marlin/src/HAL/HAL_SAMD51/endstop_interrupts.h
+++ b/Marlin/src/HAL/HAL_SAMD51/endstop_interrupts.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/fastio_SAMD51.h b/Marlin/src/HAL/HAL_SAMD51/fastio_SAMD51.h
index 70847ebf08f..93136911f68 100644
--- a/Marlin/src/HAL/HAL_SAMD51/fastio_SAMD51.h
+++ b/Marlin/src/HAL/HAL_SAMD51/fastio_SAMD51.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/inc/SanityCheck.h b/Marlin/src/HAL/HAL_SAMD51/inc/SanityCheck.h
index 93317e00494..0d45b28c322 100644
--- a/Marlin/src/HAL/HAL_SAMD51/inc/SanityCheck.h
+++ b/Marlin/src/HAL/HAL_SAMD51/inc/SanityCheck.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/persistent_store_eeprom.cpp b/Marlin/src/HAL/HAL_SAMD51/persistent_store_eeprom.cpp
index 3d7e3d52469..e41dd85c855 100644
--- a/Marlin/src/HAL/HAL_SAMD51/persistent_store_eeprom.cpp
+++ b/Marlin/src/HAL/HAL_SAMD51/persistent_store_eeprom.cpp
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/pinsDebug.h b/Marlin/src/HAL/HAL_SAMD51/pinsDebug.h
index 99e49536c16..64f6929c00a 100644
--- a/Marlin/src/HAL/HAL_SAMD51/pinsDebug.h
+++ b/Marlin/src/HAL/HAL_SAMD51/pinsDebug.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/spi_pins.h b/Marlin/src/HAL/HAL_SAMD51/spi_pins.h
index 87fedc94858..3315fa08ac5 100644
--- a/Marlin/src/HAL/HAL_SAMD51/spi_pins.h
+++ b/Marlin/src/HAL/HAL_SAMD51/spi_pins.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/watchdog_SAMD51.cpp b/Marlin/src/HAL/HAL_SAMD51/watchdog_SAMD51.cpp
index efcfb6c9af1..fad3410cff9 100644
--- a/Marlin/src/HAL/HAL_SAMD51/watchdog_SAMD51.cpp
+++ b/Marlin/src/HAL/HAL_SAMD51/watchdog_SAMD51.cpp
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/HAL/HAL_SAMD51/watchdog_SAMD51.h b/Marlin/src/HAL/HAL_SAMD51/watchdog_SAMD51.h
index b4332dace13..1c4e7542f23 100644
--- a/Marlin/src/HAL/HAL_SAMD51/watchdog_SAMD51.h
+++ b/Marlin/src/HAL/HAL_SAMD51/watchdog_SAMD51.h
@@ -1,7 +1,7 @@
 /**
  * Marlin 3D Printer Firmware
  *
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  * SAMD51 HAL developed by Giuliano Zaro (AKA GMagician)
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/Marlin/src/lcd/language/language_de.h b/Marlin/src/lcd/language/language_de.h
index c5ec63eee57..d78c8d60f18 100644
--- a/Marlin/src/lcd/language/language_de.h
+++ b/Marlin/src/lcd/language/language_de.h
@@ -105,6 +105,8 @@
 #define MSG_UBL_TOOLS                       _UxGT("UBL-Werkzeuge")
 #define MSG_UBL_LEVEL_BED                   _UxGT("Unified Bed Leveling")
 #define MSG_LCD_TILTING_MESH                _UxGT("Berührungspunkt")
+#define MSG_M48_TEST                        _UxGT("M48 Sondentest")
+#define MSG_M48_DEVIATION                   _UxGT("Abweichung")
 #define MSG_IDEX_MENU                       _UxGT("IDEX-Modus")
 #define MSG_OFFSETS_MENU                    _UxGT("Werkzeugversätze")
 #define MSG_IDEX_MODE_AUTOPARK              _UxGT("Autom. parken")
@@ -488,6 +490,7 @@
 #define MSG_VTOOLS_RESET                    _UxGT("V-Tools ist resetet")
 #define MSG_START_Z                         _UxGT("Z Start")
 #define MSG_END_Z                           _UxGT("Z Ende")
+#define MSG_GAMES                           _UxGT("Spiele")
 #define MSG_BRICKOUT                        _UxGT("Brickout")
 #define MSG_INVADERS                        _UxGT("Invaders")
 #define MSG_SNAKE                           _UxGT("Sn4k3")
diff --git a/Marlin/src/pins/stm32/pins_BIGTREE_SKR_E3_DIP.h b/Marlin/src/pins/stm32/pins_BIGTREE_SKR_E3_DIP.h
index 992c38a39ad..dc2cd1ce602 100644
--- a/Marlin/src/pins/stm32/pins_BIGTREE_SKR_E3_DIP.h
+++ b/Marlin/src/pins/stm32/pins_BIGTREE_SKR_E3_DIP.h
@@ -1,9 +1,9 @@
 /**
  * Marlin 3D Printer Firmware
- * Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ * Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  *
  * Based on Sprinter and grbl.
- * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by