diff --git a/flash_FP3_factory.sh b/flash_FP3_factory.sh
index 33157d72a2b09c99b95a6200cd1d47f12023d6fd..09e9eefa92ea0b9403be593620975e62517ac6f6 100755
--- a/flash_FP3_factory.sh
+++ b/flash_FP3_factory.sh
@@ -150,8 +150,21 @@ flash_image_ab_or_abort() {
 
 # Operating system checks and variable definition
 os_checks() {
-  echo "INFO: You are using a Linux distribution."
-  FASTBOOT_BIN="${ROOT_DIR}/bin-linux-x86/fastboot"
+  case "$(uname -s 2> /dev/null)" in
+    Linux|GNU/Linux)
+      echo "INFO: You are using a Linux distribution."
+      FASTBOOT_BIN="${ROOT_DIR}/bin-linux-x86/fastboot"
+      ;;
+    msys|MINGW*)
+      echo "INFO: You are using MinGW on Windows"
+      FASTBOOT_BIN="${ROOT_DIR}/bin-msys/fastboot.exe"
+      ;;
+    *)
+      echo "ERROR: Unsupported operating system (${OSTYPE})."
+      echo "ERROR: Only GNU/Linux, and MinGW on Windows are currently supported."
+      abort_now
+      ;;
+  esac
 }
 
 
diff --git a/flash_FP4_factory.sh b/flash_FP4_factory.sh
index e71e586a89246f4f8d2f0a9be81812e417c67042..1a7cc1093281b4691ab318d4f74dc5943a8c44dc 100755
--- a/flash_FP4_factory.sh
+++ b/flash_FP4_factory.sh
@@ -146,8 +146,21 @@ flash_image_ab_or_abort() {
 
 # Operating system checks and variable definition
 os_checks() {
-  echo "INFO: You are using a Linux distribution."
-  FASTBOOT_BIN="${ROOT_DIR}/bin-linux-x86/fastboot"
+  case "$(uname -s 2> /dev/null)" in
+    Linux|GNU/Linux)
+      echo "INFO: You are using a Linux distribution."
+      FASTBOOT_BIN="${ROOT_DIR}/bin-linux-x86/fastboot"
+      ;;
+    msys|MINGW*)
+      echo "INFO: You are using MinGW on Windows"
+      FASTBOOT_BIN="${ROOT_DIR}/bin-msys/fastboot.exe"
+      ;;
+    *)
+      echo "ERROR: Unsupported operating system (${OSTYPE})."
+      echo "ERROR: Only GNU/Linux, and MinGW on Windows are currently supported."
+      abort_now
+      ;;
+  esac
 }
 
 # Control the reboot sequence