diff --git a/speedport/api.py b/speedport/api.py
index 0290d5c..8ff6c08 100644
--- a/speedport/api.py
+++ b/speedport/api.py
@@ -171,6 +171,15 @@ async def reconnect(self):
             "html/content/internet/con_ipdata.html",
         )
 
+    @need_auth
+    async def ex5g_restore(self):
+        _LOGGER.info("Restore 5G extension...")
+        await self.api.post(
+            "data/LTE.json",
+            {"restore": "true"},
+            "html/content/internet/lte_firmware.html",
+        )
+
     @need_auth
     async def reboot(self):
         _LOGGER.info("Reboot speedport...")
diff --git a/speedport/speedport.py b/speedport/speedport.py
index 841ea43..950e4c0 100644
--- a/speedport/speedport.py
+++ b/speedport/speedport.py
@@ -107,6 +107,9 @@ async def wps_on(self):
     async def reconnect(self):
         await self.api.reconnect()
 
+    async def ex5g_restore(self):
+        await self.api.ex5g_restore()
+
     async def reboot(self):
         await self.api.reboot()