diff --git a/radio/src/gui/480x272/view_main.cpp b/radio/src/gui/480x272/view_main.cpp
index 4ee2e4a23..3cf249dab 100644
--- a/radio/src/gui/480x272/view_main.cpp
+++ b/radio/src/gui/480x272/view_main.cpp
@@ -223,6 +223,23 @@ bool menuMainView(event_t event)
     }
   }
 
+#if defined(HARDWARE_INTERNAL_MODULE) && defined(INTERNAL_MODULE_PXX2) && defined(ACCESS_LIB)
+  if (globalData.authenticationCount > 0 && !globalData.upgradeModulePopup) {
+    if (!globalData.internalModuleVersionChecked) {
+      globalData.internalModuleVersionChecked = 1;
+      memclear(&reusableBuffer.viewMain.internalModule, sizeof(reusableBuffer.viewMain.internalModule));
+      moduleState[INTERNAL_MODULE].readModuleInformation(&reusableBuffer.viewMain.internalModule, PXX2_HW_INFO_TX_ID, PXX2_HW_INFO_TX_ID);
+    }
+    else if (reusableBuffer.viewMain.internalModule.information.modelID == PXX2_MODULE_ISRM_S_X10S &&
+             reusableBuffer.viewMain.internalModule.information.swVersion.major == 0 &&
+             reusableBuffer.viewMain.internalModule.information.swVersion.minor == 1 &&
+             reusableBuffer.viewMain.internalModule.information.swVersion.revision < 5) {
+      globalData.upgradeModulePopup = 1;
+      POPUP_WARNING(STR_MODULE_UPGRADE);
+    }
+  }
+#endif
+
   return true;
 }
 
diff --git a/radio/src/opentx.h b/radio/src/opentx.h
index 37570dd52..f13914e86 100644
--- a/radio/src/opentx.h
+++ b/radio/src/opentx.h
@@ -572,7 +572,8 @@ PACK(struct GlobalData {
   uint8_t externalAntennaEnabled:1;
   uint8_t authenticationCount:2;
   uint8_t upgradeModulePopup:1;
-  uint8_t spare:3;
+  uint8_t internalModuleVersionChecked:1;
+  uint8_t spare:2;
 });
 
 extern GlobalData globalData;
@@ -1231,6 +1232,10 @@ union ReusableBuffer
     uint8_t maxNameLen;
   } modelFailsafe;
 
+  struct {
+    ModuleInformation internalModule;
+  } viewMain;
+
 #if defined(STM32)
   // Data for the USB mass storage driver. If USB mass storage runs no menu is not allowed to be displayed
   uint8_t MSC_BOT_Data[MSC_MEDIA_PACKET];