diff --git a/Arduino/CanGrow/CanGrow_HTML.h b/Arduino/CanGrow/CanGrow_HTML.h
index 6677049..6a87661 100644
--- a/Arduino/CanGrow/CanGrow_HTML.h
+++ b/Arduino/CanGrow/CanGrow_HTML.h
@@ -507,7 +507,7 @@ const char HTMLupdate[] PROGMEM = R"EOF(
 <p>You find the latest CanGrow firmware version on the <a href='https://git.la10cy.net/DeltaLima/CanGrow/releases' target='_blank'>release page</a> of the git repository.</p>
 <form method='POST' action='/system/applyUpdate' enctype='multipart/form-data'>
    <b>Select .bin file:</b><br>
-   <input type='file' accept='.bin,.bin.gz' name='firmware'>
+   <input type='file' accept='.bin,.bin.gz' name='firmware' required>
    <input type='submit' value='Update Firmware' onclick="document.getElementById('divUploading').style.display = '';">
 </form>
 <div id='divUploading' style='display: none;' class='warnmsg'>&#x1F6DC; Uploading, please wait...<div>
diff --git a/Arduino/CanGrow/CanGrow_Version.h b/Arduino/CanGrow/CanGrow_Version.h
index f7686d0..620dcea 100644
--- a/Arduino/CanGrow/CanGrow_Version.h
+++ b/Arduino/CanGrow/CanGrow_Version.h
@@ -1,5 +1,5 @@
 /* CanGrow_Version.h gets generated from cangrow.sh */
 
 const char* CanGrowVer = "0.1-dev";
-const char* CanGrowBuild = "52abf8e";
+const char* CanGrowBuild = "bacb48a";
 
diff --git a/cangrow.sh b/cangrow.sh
index 684dc1c..b367f73 100755
--- a/cangrow.sh
+++ b/cangrow.sh
@@ -89,7 +89,7 @@ const char* CanGrowBuild = \"${BUILD}\";
 		;;
 	w|webupload)
 		echo ":: Uploading to $IP"
-		curl -v http://$IP/system/applyUpdate -X POST -H 'Content-Type: multipart/form-data' -F "file=@$(pwd)/build/CanGrow.ino.bin"
+		curl -v http://$IP/system/applyUpdate -X POST -H 'Content-Type: multipart/form-data' -F "firmware=@$(pwd)/build/CanGrow.ino.bin"
 		echo
 		;;	
 	m|mon|monitor)