Solution:
1. Let's see if the network allowed by the app is consistent with the network allowed by the app. If it is inconsistent, it should be changed to consistent. Generally, if there is wireless, it should be set as an infinite local area network. If not, it should be set as the bottom bar.
2. There is another complicated situation. There is a problem with the dns server. We can solve this problem by specifying the ip address of the dns server. Open the wireless network of Apple's mobile phone, click the "I" symbol to modify it, and change the IP address of DNS inside to 8.8.8.8 or11165438+.
Finally, you can download the software only if you make sure that your Apple ip account is correct.