Perform a check of the nina fw version before performing flash update.

Author: aentinger

libraries/SNU/extras/NiNaBoot/NiNaBoot.ino

@@ -138,10 +138,17 @@ int main() {
   digitalWrite(NINA_RESETN, HIGH);
 #endif
 
+  String nina_fw_version;
+
   if (WiFi.status() == WL_NO_SHIELD) {
     goto boot;
   }
 
+  nina_fw_version = WiFi.firmwareVersion();
+  if (nina_fw_version < "1.4.1") {
+    goto boot;
+  }
+
   /* For UPDATE.BIN.LZSS - LZSS compressed binary files. */
   if (WiFiStorage.exists(UPDATE_FILE_NAME_LZSS))
   {