diff --git a/scripts/install_fw_d2rg_mmdvmhs.sh b/scripts/install_fw_d2rg_mmdvmhs.sh
index 33da9f4..ea5fca8 100755
--- a/scripts/install_fw_d2rg_mmdvmhs.sh
+++ b/scripts/install_fw_d2rg_mmdvmhs.sh
@@ -19,8 +19,20 @@
 # Configure latest version
 FW_VERSION="v1.4.17"
 	
-# Download latest firmware for D2RG MMDVM_HS
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/d2rg_mmdvm_hs.bin
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="d2rg_mmdvm_hs.bin"
+	
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -69,5 +81,5 @@ sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
 # Note: /dev/ttySC0 should be enabled, see: https://github.com/bg3mdo/D2RG_MMDVM_HS_ambe_uart_service
-eval sudo $STM32FLASH -v -w d2rg_mmdvm_hs.bin -g 0x0 -R -i 23,-22,22:-23,22 /dev/ttySC0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 23,-22,22:-23,22 /dev/ttySC0
 
diff --git a/scripts/install_fw_dualband.sh b/scripts/install_fw_dualband.sh
index 4e46fa3..8ed3607 100755
--- a/scripts/install_fw_dualband.sh
+++ b/scripts/install_fw_dualband.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="zumspot_dualband_fw.bin"
 	
-# Download latest firmware for ZUMspot Dualband (GPIO)
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/zumspot_dualband_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w zumspot_dualband_fw.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_duplex.sh b/scripts/install_fw_duplex.sh
index 6865ca9..ac46940 100755
--- a/scripts/install_fw_duplex.sh
+++ b/scripts/install_fw_duplex.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="zumspot_duplex_fw.bin"
 	
-# Download latest firmware for ZUMspot Duplex (GPIO)
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/zumspot_duplex_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w zumspot_duplex_fw.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_duplex_gpio.sh b/scripts/install_fw_duplex_gpio.sh
index 8c8cbcf..dd89633 100755
--- a/scripts/install_fw_duplex_gpio.sh
+++ b/scripts/install_fw_duplex_gpio.sh
@@ -18,9 +18,24 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="generic_duplex_gpio_fw.bin"
 	
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
+
 # Download latest firmware for Generic Duplex GPIO
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/generic_duplex_gpio_fw.bin
+curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +83,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w generic_duplex_gpio_fw.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_duplex_usb.sh b/scripts/install_fw_duplex_usb.sh
index 028ddb4..56aa0cc 100755
--- a/scripts/install_fw_duplex_usb.sh
+++ b/scripts/install_fw_duplex_usb.sh
@@ -21,9 +21,21 @@ FW_VERSION="v1.4.17"
 
 # Change USB-serial port name ONLY in macOS
 MAC_DEV_USB_SER="/dev/cu.usbmodem14401"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="generic_duplex_usb_fw.bin"
 	
-# Download latest firmware for Generic duplex USB boards
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/generic_duplex_usb_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -76,7 +88,7 @@ sudo killall MMDVMHost >/dev/null 2>&1
 eval sudo $DFU_RST $DEV_USB_SER 750
 
 # Upload the firmware
-eval sudo $DFU_UTIL -D generic_duplex_usb_fw.bin -d 1eaf:0003 -a 2 -R -R
+eval sudo $DFU_UTIL -D $FW_FILENAME -d 1eaf:0003 -a 2 -R -R
 
 echo
 echo "Please RESET your MMDVM_HS board !"
diff --git a/scripts/install_fw_gen_gpio.sh b/scripts/install_fw_gen_gpio.sh
index e0779e7..8afeec9 100755
--- a/scripts/install_fw_gen_gpio.sh
+++ b/scripts/install_fw_gen_gpio.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="generic_gpio_fw.bin"
 	
-# Download latest firmware for Generic Simplex GPIO
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/generic_gpio_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w generic_gpio_fw.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_hsdualhat-12mhz.sh b/scripts/install_fw_hsdualhat-12mhz.sh
index 5bcc132..5bc76db 100755
--- a/scripts/install_fw_hsdualhat-12mhz.sh
+++ b/scripts/install_fw_hsdualhat-12mhz.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="mmdvm_hs_dual_hat_fw-12mhz.bin"
 	
-# Download latest firmware for MMDVM_HS_Hat
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/mmdvm_hs_dual_hat_fw-12mhz.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w mmdvm_hs_dual_hat_fw-12mhz.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_hsdualhat.sh b/scripts/install_fw_hsdualhat.sh
index a967630..7123c55 100755
--- a/scripts/install_fw_hsdualhat.sh
+++ b/scripts/install_fw_hsdualhat.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="mmdvm_hs_dual_hat_fw.bin"
 	
-# Download latest firmware for MMDVM_HS_Hat
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/mmdvm_hs_dual_hat_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w mmdvm_hs_dual_hat_fw.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_hshat-12mhz.sh b/scripts/install_fw_hshat-12mhz.sh
index ad1e280..6e86483 100755
--- a/scripts/install_fw_hshat-12mhz.sh
+++ b/scripts/install_fw_hshat-12mhz.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="mmdvm_hs_hat_fw-12mhz.bin"
 	
-# Download latest firmware for MMDVM_HS_Hat with 12.288 MHz TCXO
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/mmdvm_hs_hat_fw-12mhz.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w mmdvm_hs_hat_fw-12mhz.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_hshat.sh b/scripts/install_fw_hshat.sh
index 76ae591..7ffa5da 100755
--- a/scripts/install_fw_hshat.sh
+++ b/scripts/install_fw_hshat.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="mmdvm_hs_hat_fw.bin"
 	
-# Download latest firmware for MMDVM_HS_Hat
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/mmdvm_hs_hat_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w mmdvm_hs_hat_fw.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_librekit.sh b/scripts/install_fw_librekit.sh
index 09b2e58..118c640 100755
--- a/scripts/install_fw_librekit.sh
+++ b/scripts/install_fw_librekit.sh
@@ -21,9 +21,21 @@ FW_VERSION="v1.4.17"
 
 # Change USB-serial port name ONLY in macOS
 MAC_DEV_USB_SER="/dev/cu.usbmodem14401"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="zumspot_libre_fw.bin"
 	
-# Download latest firmware for ZUMspot Libre Kit
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/zumspot_libre_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -76,7 +88,7 @@ sudo killall MMDVMHost >/dev/null 2>&1
 eval sudo $DFU_RST $DEV_USB_SER 750
 
 # Upload the firmware
-eval sudo $DFU_UTIL -D zumspot_libre_fw.bin -d 1eaf:0003 -a 2 -R -R
+eval sudo $DFU_UTIL -D $FW_FILENAME -d 1eaf:0003 -a 2 -R -R
 
 echo
 echo "Please RESET your ZUMspot Libre Kit !"
diff --git a/scripts/install_fw_nanodv_npi.sh b/scripts/install_fw_nanodv_npi.sh
index 895cef1..1fe2349 100755
--- a/scripts/install_fw_nanodv_npi.sh
+++ b/scripts/install_fw_nanodv_npi.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="nanodv_npi_fw.bin"
 	
-# Download latest firmware for Nano DV
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/nanodv_npi_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w nanodv_npi_fw.bin -g 0x0 -R -i 66,-67,67:-66,67 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 66,-67,67:-66,67 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_nanodv_usb.sh b/scripts/install_fw_nanodv_usb.sh
index 71f41bf..116acb6 100755
--- a/scripts/install_fw_nanodv_usb.sh
+++ b/scripts/install_fw_nanodv_usb.sh
@@ -21,9 +21,21 @@ FW_VERSION="v1.4.17"
 
 # Change USB-serial port name ONLY in macOS
 MAC_DEV_USB_SER="/dev/cu.usbmodem14401"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="nanodv_usb_fw.bin"
 	
-# Download latest firmware for ZUMspot USB
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/nanodv_usb_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -76,7 +88,7 @@ sudo killall MMDVMHost >/dev/null 2>&1
 eval sudo $DFU_RST $DEV_USB_SER 750
 
 # Upload the firmware
-eval sudo $DFU_UTIL -D nanodv_usb_fw.bin -d 1eaf:0003 -a 2 -R -R
+eval sudo $DFU_UTIL -D $FW_FILENAME -d 1eaf:0003 -a 2 -R -R
 
 echo
 echo "Please RESET your Nano DV !"
diff --git a/scripts/install_fw_nanohs.sh b/scripts/install_fw_nanohs.sh
index d650f57..e345fa7 100755
--- a/scripts/install_fw_nanohs.sh
+++ b/scripts/install_fw_nanohs.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="nano_hotspot_fw.bin"
 	
-# Download latest firmware for Nano hotSPOT
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/nano_hotspot_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w nano_hotspot_fw.bin -g 0x0 -R -i 200,-3,3:-200,3 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 200,-3,3:-200,3 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_rpi.sh b/scripts/install_fw_rpi.sh
index 6b160f5..ae8639e 100755
--- a/scripts/install_fw_rpi.sh
+++ b/scripts/install_fw_rpi.sh
@@ -18,9 +18,21 @@
 
 # Configure latest version
 FW_VERSION="v1.4.17"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="zumspot_rpi_fw.bin"
 	
-# Download latest firmware for ZUMspot RPi (GPIO)
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/zumspot_rpi_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -68,5 +80,5 @@ fi
 sudo killall MMDVMHost >/dev/null 2>&1
 
 # Upload the firmware
-eval sudo $STM32FLASH -v -w zumspot_rpi_fw.bin -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
+eval sudo $STM32FLASH -v -w $FW_FILENAME -g 0x0 -R -i 20,-21,21:-20,21 /dev/ttyAMA0
 
diff --git a/scripts/install_fw_usb.sh b/scripts/install_fw_usb.sh
index fc06b4c..3de199a 100755
--- a/scripts/install_fw_usb.sh
+++ b/scripts/install_fw_usb.sh
@@ -21,9 +21,21 @@ FW_VERSION="v1.4.17"
 
 # Change USB-serial port name ONLY in macOS
 MAC_DEV_USB_SER="/dev/cu.usbmodem14401"
+
+# Configure beta version
+FW_VERSION_BETA="v1.5.1b"
+
+# Firmware filename
+FW_FILENAME="zumspot_usb_fw.bin"
 	
-# Download latest firmware for ZUMspot USB
-curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/zumspot_usb_fw.bin
+# Download latest firmware
+if [ $1 = "beta" ]; then
+	echo "Downloading beta firmware..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION_BETA/$FW_FILENAME
+else
+	echo "Downloading latest firmware (stable)..."
+	curl -OL https://github.com/juribeparada/MMDVM_HS/releases/download/$FW_VERSION/$FW_FILENAME
+fi
 
 # Download STM32F10X_Lib (only for binary tools)
 if [ ! -d "./STM32F10X_Lib/utils" ]; then
@@ -76,7 +88,7 @@ sudo killall MMDVMHost >/dev/null 2>&1
 eval sudo $DFU_RST $DEV_USB_SER 750
 
 # Upload the firmware
-eval sudo $DFU_UTIL -D zumspot_usb_fw.bin -d 1eaf:0003 -a 2 -R -R
+eval sudo $DFU_UTIL -D $FW_FILENAME -d 1eaf:0003 -a 2 -R -R
 
 echo
 echo "Please RESET your ZUMspot !"