1. Open your SharePoint Admin Center, and choose apps from the left-side pane;
2. Choose the app catalog option;
3. On the catalog site collection, click on the gear icon, in the suite bar, and select Site Contents;
4. On the site contents page select Apps for SharePoint.
5. Click on the upload button and select the .app file included in your web part package;
6. You may be prompted to replace the existing file on the library. If that happens, click Yes;
7. Once the upload is complete, go to Site Contents.
8. Click on the ellipsis button, on the Tiles app, and then click About;
9. In this page you should see that there is a new version available. Click the Get It button;
10. Now you must wait for the app to finish updating on the page.
11. Once the update is finished click on the app and then click on Update Available;

The page will begin re-deploying the web part into your site. Once it’s finished you will have the new version on you site collection. To update the app on other site collections, simply repeat steps 8 through 12.

Web Part updated! ✅