You can go to Saipan forum or search for a software called stevedores on the Internet, which has the function of issuing certificates. Wait for about 3 hours after clicking on it, and then click on it, and you will have it. It's in your phone. Then click on the option with signature, and you can sign and install the software you want to sign. It's the simplest and much better than queuing up to get the certificate online.