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What should I do if my mobile phone certificate expires?
it's ok to change the time, but it needs to be corrected. When the certificate expires, you can install the software by adjusting the system time to the validity period of the certificate (you can change it back after installation). If you can't determine the validity period of the certificate, you can transfer it to the front year after year, or you can directly re-visa the software with an unexpired certificate.