diff --git a/webgui/js/util/firmwareUtil.js b/webgui/js/util/firmwareUtil.js
index c4b1bb8..3ef1667 100644
--- a/webgui/js/util/firmwareUtil.js
+++ b/webgui/js/util/firmwareUtil.js
@@ -155,6 +155,9 @@ firmwareUtil.parseIntelHex = function (data, bufferSize) {
 };
 
 firmwareUtil.getBTFWInfo = function () {
+    device = device || C.CURRENT_DEVICE;
+    majorVersion = majorVersion || ATDevice.getMajorVersion();
+    let deviceIsFM = device === C.AT_DEVICE_FLIPMOUSE;
     if (deviceIsFM && majorVersion === 3) {
         return getFWInfo('https://api.github.com/repos/asterics/esp32_mouse_keyboard/releases/latest', '.fm3');
     } else {