diff --git a/software/firmware/source/SoftRF/src/driver/EEPROM.cpp b/software/firmware/source/SoftRF/src/driver/EEPROM.cpp
index 9359a7020..bbfa0938a 100644
--- a/software/firmware/source/SoftRF/src/driver/EEPROM.cpp
+++ b/software/firmware/source/SoftRF/src/driver/EEPROM.cpp
@@ -83,7 +83,8 @@ void EEPROM_defaults()
   eeprom_block.field.magic                  = SOFTRF_EEPROM_MAGIC;
   eeprom_block.field.version                = SOFTRF_EEPROM_VERSION;
   eeprom_block.field.settings.mode          = SOFTRF_MODE_NORMAL;
-  eeprom_block.field.settings.rf_protocol   = hw_info.model == SOFTRF_MODEL_BRACELET ?
+  eeprom_block.field.settings.rf_protocol   = hw_info.model == SOFTRF_MODEL_BRACELET ||
+                                              hw_info.model == SOFTRF_MODEL_CARD ?
                                               RF_PROTOCOL_FANET :
                                               hw_info.model == SOFTRF_MODEL_ES ?
                                               RF_PROTOCOL_ADSB_1090 :
diff --git a/software/firmware/source/SoftRF/src/driver/GNSS.cpp b/software/firmware/source/SoftRF/src/driver/GNSS.cpp
index 4977cb310..d0ace92fc 100644
--- a/software/firmware/source/SoftRF/src/driver/GNSS.cpp
+++ b/software/firmware/source/SoftRF/src/driver/GNSS.cpp
@@ -1227,6 +1227,7 @@ byte GNSS_setup() {
       hw_info.model == SOFTRF_MODEL_PRIME_MK3 ||
       hw_info.model == SOFTRF_MODEL_UNI       ||
       hw_info.model == SOFTRF_MODEL_BADGE     ||
+      hw_info.model == SOFTRF_MODEL_ACADEMY   ||
       hw_info.model == SOFTRF_MODEL_LEGO      ||
       hw_info.model == SOFTRF_MODEL_ES        ||
       hw_info.model == SOFTRF_MODEL_BALKAN    ||
diff --git a/software/firmware/source/SoftRF/src/platform/EFR32.cpp b/software/firmware/source/SoftRF/src/platform/EFR32.cpp
index 60e6f5dd9..34d447d48 100644
--- a/software/firmware/source/SoftRF/src/platform/EFR32.cpp
+++ b/software/firmware/source/SoftRF/src/platform/EFR32.cpp
@@ -19,7 +19,6 @@
 #if defined(ARDUINO_ARCH_SILABS)
 
 #include <SPI.h>
-#include <Wire.h>
 
 #include "../system/SoC.h"
 #include "../driver/RF.h"
@@ -43,7 +42,7 @@ lmic_pinmap lmic_pins = {
     .rxe = LMIC_UNUSED_PIN,
     .rst = SOC_GPIO_PIN_RST,
     .dio = {LMIC_UNUSED_PIN, LMIC_UNUSED_PIN, LMIC_UNUSED_PIN},
-    .busy = LMIC_UNUSED_PIN,
+    .busy = SOC_GPIO_PIN_BUSY,
     .tcxo = LMIC_UNUSED_PIN,
 };
 
@@ -112,6 +111,19 @@ eeprom_t eeprom_block;
 settings_t *settings = &eeprom_block.field.settings;
 #endif /* EXCLUDE_EEPROM */
 
+#if defined(USE_SOFTSPI)
+#include <SoftSPI.h>
+SoftSPI RadioSPI(SOC_GPIO_PIN_MOSI,SOC_GPIO_PIN_MISO, SOC_GPIO_PIN_SCK);
+#endif /* USE_SOFTSPI */
+
+#if defined __has_include
+#if __has_include(<FlexWire.h>)
+#include <FlexWire.h>
+
+FlexWire Wire = FlexWire(SOC_GPIO_PIN_SDA, SOC_GPIO_PIN_SCL, false);
+#endif /* FlexWire.h */
+#endif /* __has_include */
+
 static void EFR32_setup()
 {
   uint32_t reset_cause = get_system_reset_cause();
@@ -183,6 +195,10 @@ static void EFR32_setup()
       reset_info.reason = REASON_EXCEPTION_RST;
   }
 
+#if defined(USE_RADIOLIB)
+  lmic_pins.dio[0] = SOC_GPIO_PIN_DIO1;
+#endif /* USE_RADIOLIB */
+
 #if SOC_GPIO_RADIO_LED_TX != SOC_UNUSED_PIN
   pinMode(SOC_GPIO_RADIO_LED_TX, OUTPUT);
   digitalWrite(SOC_GPIO_RADIO_LED_TX, ! LED_STATE_ON);
@@ -302,7 +318,25 @@ static void EFR32_loop()
 
 static void EFR32_fini(int reason)
 {
-  LowPower.attachInterruptWakeup(SOC_GPIO_PIN_BUTTON, nullptr, RISING);
+  switch (reason)
+  {
+#if SOC_GPIO_PIN_BUTTON != SOC_UNUSED_PIN
+  case SOFTRF_SHUTDOWN_BUTTON:
+  case SOFTRF_SHUTDOWN_LOWBAT:
+    /* the GPIO must have EM4 wake functionality */
+    pinMode(SOC_GPIO_PIN_BUTTON, INPUT_PULLUP);
+    LowPower.attachInterruptWakeup(SOC_GPIO_PIN_BUTTON, nullptr, FALLING);
+    break;
+#endif /* SOC_GPIO_PIN_BUTTON != SOC_UNUSED_PIN */
+  case SOFTRF_SHUTDOWN_NMEA:
+    /* the GPIO must have EM4 wake functionality */
+    pinMode(SOC_GPIO_PIN_BUTTON, INPUT_PULLUP);
+    LowPower.attachInterruptWakeup(SOC_GPIO_PIN_CONS_RX, nullptr, FALLING);
+    break;
+  default:
+    break;
+  }
+
   LowPower.deepSleep();
 }
 
@@ -413,17 +447,15 @@ static void EFR32_EEPROM_extension(int cmd)
       settings->mode = SOFTRF_MODE_NORMAL;
     }
 
-    if (settings->nmea_out == NMEA_BLUETOOTH ||
-        settings->nmea_out == NMEA_UDP       ||
+    if (settings->nmea_out == NMEA_USB ||
+        settings->nmea_out == NMEA_UDP ||
         settings->nmea_out == NMEA_TCP ) {
       settings->nmea_out = NMEA_UART;
     }
-    if (settings->gdl90 == GDL90_BLUETOOTH  ||
-        settings->gdl90 == GDL90_UDP) {
+    if (settings->gdl90 == GDL90_USB || settings->gdl90 == GDL90_UDP) {
       settings->gdl90 = GDL90_UART;
     }
-    if (settings->d1090 == D1090_BLUETOOTH  ||
-        settings->d1090 == D1090_UDP) {
+    if (settings->d1090 == D1090_USB || settings->d1090 == D1090_UDP) {
       settings->d1090 = D1090_UART;
     }
 
@@ -436,7 +468,9 @@ static void EFR32_EEPROM_extension(int cmd)
 
 static void EFR32_SPI_begin()
 {
+#if !defined(EXCLUDE_NRF905) || defined(USE_OGN_RF_DRIVER)
   SPI.begin();
+#endif
 }
 
 static void EFR32_swSer_begin(unsigned long baud)
@@ -603,7 +637,7 @@ static void EFR32_Button_setup()
     int button_pin = SOC_GPIO_PIN_BUTTON;
 
     // Button(s) uses external pull up resistor.
-    pinMode(button_pin, INPUT);
+    pinMode(button_pin, INPUT_PULLUP);
 
     button_1.init(button_pin);
 
diff --git a/software/firmware/source/SoftRF/src/platform/EFR32.h b/software/firmware/source/SoftRF/src/platform/EFR32.h
index bf35e09bf..98cc47b4c 100644
--- a/software/firmware/source/SoftRF/src/platform/EFR32.h
+++ b/software/firmware/source/SoftRF/src/platform/EFR32.h
@@ -91,6 +91,12 @@ struct rst_info {
 #define SOC_GPIO_PIN_SCK      PIN_SPI_SCK
 #define SOC_GPIO_PIN_SS       PIN_SPI_SS
 
+//#include <SoftSPI.h>
+//extern  SoftSPI RadioSPI;
+//#undef  SPI
+//#define SPI                   RadioSPI
+//#define USE_SOFTSPI
+
 /* NRF905 */
 #define SOC_GPIO_PIN_TXE      SOC_UNUSED_PIN
 #define SOC_GPIO_PIN_CE       SOC_UNUSED_PIN
@@ -98,7 +104,7 @@ struct rst_info {
 
 /* SX1276 */
 #define SOC_GPIO_PIN_RST      D0             /* PA0 */
-#define SOC_GPIO_PIN_BUSY     SOC_UNUSED_PIN
+#define SOC_GPIO_PIN_BUSY     LMIC_UNUSED_PIN
 #define SOC_GPIO_PIN_DIO1     D5             /* PC6 */
 
 /* I2C */
diff --git a/software/firmware/source/libraries/OGN/manchester.h b/software/firmware/source/libraries/OGN/manchester.h
index 0ea8161fa..f847d538f 100644
--- a/software/firmware/source/libraries/OGN/manchester.h
+++ b/software/firmware/source/libraries/OGN/manchester.h
@@ -5,7 +5,8 @@
     defined(ENERGIA_ARCH_CC13XX)   || defined(ENERGIA_ARCH_CC13X2) || \
    (defined(ARDUINO_ARCH_RP2040)   && defined(ARDUINO_ARCH_MBED))  || \
    (defined(ARDUINO_ARCH_NRF52840) && defined(ARDUINO_ARCH_MBED))  || \
-    defined(ARDUINO_ARCH_RENESAS)  || defined(ARDUINO_ARCH_SAMD)
+    defined(ARDUINO_ARCH_RENESAS)  || defined(ARDUINO_ARCH_SAMD)   || \
+    defined(ARDUINO_ARCH_SILABS)
 #include <avr/pgmspace.h>
 #endif
 
diff --git a/software/firmware/source/libraries/SoftSPI/SoftSPI.cpp b/software/firmware/source/libraries/SoftSPI/SoftSPI.cpp
index 9f89a8a91..e96a59e0c 100644
--- a/software/firmware/source/libraries/SoftSPI/SoftSPI.cpp
+++ b/software/firmware/source/libraries/SoftSPI/SoftSPI.cpp
@@ -3,11 +3,11 @@
 #if defined(ARDUINO_ARCH_NRF52)
 SoftSPI::SoftSPI(uint8_t mosi, uint8_t miso, uint8_t sck) : SPIClass(NRF_SPIM0, 0, 0, 0)
 #elif defined(ARDUINO_ARCH_ESP32) || defined(ARDUINO_ARCH_RP2040) || \
-      defined(ARDUINO_ARCH_RENESAS)
+      defined(ARDUINO_ARCH_RENESAS) || defined(ARDUINO_ARCH_SILABS)
 SoftSPI::SoftSPI(uint8_t mosi, uint8_t miso, uint8_t sck) : SPIClass()
 #else
 #error "This build architecture is not supported!"
-#endif /* ARDUINO_ARCH_NRF52 || ARDUINO_ARCH_ESP32 || ARDUINO_ARCH_RP2040 */
+#endif /* NRF52 || ESP32 || RP2040 || RENESAS || SILABS */
 {
     _mosi = mosi;
     _miso = miso;
@@ -134,10 +134,11 @@ void SoftSPI::endTransaction(void)
 {
 }
 
-#if defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_ARCH_RENESAS)
+#if defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_ARCH_RENESAS) || \
+    defined(ARDUINO_ARCH_SILABS)
 /* compatibility with Arduino RP2040 Core */
 void SoftSPI::usingInterrupt(int interruptNumber) {}
 void SoftSPI::notUsingInterrupt(int interruptNumber) {}
 void SoftSPI::attachInterrupt() {}
 void SoftSPI::detachInterrupt() {}
-#endif /* ARDUINO_ARCH_RP2040 || ARDUINO_ARCH_RENESAS */
+#endif /* RP2040 || RENESAS || SILABS */
diff --git a/software/firmware/source/libraries/SoftSPI/SoftSPI.h b/software/firmware/source/libraries/SoftSPI/SoftSPI.h
index 5037371da..7b570f6aa 100644
--- a/software/firmware/source/libraries/SoftSPI/SoftSPI.h
+++ b/software/firmware/source/libraries/SoftSPI/SoftSPI.h
@@ -24,13 +24,14 @@ class SoftSPI : public SPIClass
     // Transaction Functions
     void beginTransaction(SPISettings settings);
     void endTransaction(void);
-#if defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_ARCH_RENESAS)
+#if defined(ARDUINO_ARCH_RP2040) || defined(ARDUINO_ARCH_RENESAS) || \
+    defined(ARDUINO_ARCH_SILABS)
     /* compatibility with Arduino RP2040 Core */
     void usingInterrupt(int interruptNumber);
     void notUsingInterrupt(int interruptNumber);
     void attachInterrupt();
     void detachInterrupt();
-#endif /* ARDUINO_ARCH_RP2040 || ARDUINO_ARCH_RENESAS */
+#endif /* RP2040 || RENESAS || SILABS */
 private:
     uint8_t _miso;
     uint8_t _mosi;
diff --git a/software/firmware/source/libraries/arduino-lmic/src/hal/hal.cpp b/software/firmware/source/libraries/arduino-lmic/src/hal/hal.cpp
index 14659de60..9db3a84b4 100644
--- a/software/firmware/source/libraries/arduino-lmic/src/hal/hal.cpp
+++ b/software/firmware/source/libraries/arduino-lmic/src/hal/hal.cpp
@@ -21,12 +21,12 @@
 #include <cc13xx/cc13xx.h>
 #endif /* ENERGIA_ARCH_CC13XX || ENERGIA_ARCH_CC13X2 */
 
-#if defined(ARDUINO_ARCH_RENESAS)
+#if defined(ARDUINO_ARCH_RENESAS) // || defined(ARDUINO_ARCH_SILABS)
 #include <SoftSPI.h>
 extern  SoftSPI RadioSPI;
 #undef  SPI
 #define SPI RadioSPI
-#endif /* ARDUINO_ARCH_RENESAS */
+#endif /* ARDUINO_ARCH_RENESAS || ARDUINO_ARCH_SILABS */
 
 #include "../lmic.h"
 #include "hal.h"