try removing the /prefs dir

src/mesh/NodeDB.cpp

@@ -97,12 +97,7 @@ bool NodeDB::resetRadioConfig()
         nvs_flash_erase();
 #endif
 #ifdef NRF52_SERIES
-
-    installDefaultDeviceState();
-    installDefaultRadioConfig();
-    installDefaultChannels();
-    saveToDisk();
-    saveChannelsToDisk();
+        FS.rmdir_r("/prefs");
 
         Bluefruit.begin();
 
@@ -113,7 +108,6 @@ bool NodeDB::resetRadioConfig()
         Bluefruit.Periph.clearBonds();
         Bluefruit.Central.clearBonds();
 
-
 #endif
         didFactoryReset = true;
     }