From the up group, I saw a computer-free method, valid for 1 year, and it was shipped here. Download the testflight store, and then open the testflight store in the webpage to download gbox. If you are prompted that it cannot be installed, please wait a few minutes. After installation, gbox will purchase and exchange certificates. Download the self-signed ipa package given by 7 1 1 on the network disk and open it with other applications. Select gbox, sign first, and then install.