added instructions on how to replace the trained model with a higher …

…quality pre-trained model in the final colab step

Firebase_ML_on_device_recommentations.ipynb

@@ -842,7 +842,15 @@
       },
       "source": [
         "# Return to the Firebase Console\n",
-        "At this point, we have deployed the trained model to the Firebase console. You can go to Develop > Machine Learning > Custom to check it out! Please return to the [codelab](https://codelabs.developers.google.com/codelabs/contentrecommendation-android) and complete the last steps."
+        "At this point, we have deployed the trained model to the Firebase console. You can go to Develop > Machine Learning > Custom to check it out!\n",
+        "\n",
+        "Note that for the purposes of this codelab, in order to have a quick training time, we intentionally chose suboptimal training parameters (as described in the model training step above) that sacrifice model quality. To get better results, please use the pre-trained model included in the Github code repo [here](https://github.com/FirebaseExtended/codelab-contentrecommendation-android/blob/master/recommendation_cnn_i10o100.tflite).\n",
+        "To replace the model we just published:\n",
+        "1. In the Firebase console, go to Develop > Machine Learning > Custom\n",
+        "1. Select the settings dropdown under the model named \"recommendations\"\n",
+        "1. Choose \"Replace model\" and upload the model file from the Github repo.\n",
+        "\n",
+        "Finally, please return to the [codelab](https://codelabs.developers.google.com/codelabs/contentrecommendation-android) and complete the last steps to see the app in action!"
       ]
     }
   ]