Why is my n97min signed with a certificate? I can't install the software after it shows that it is not trusted.

Protected applications from untrusted providers cannot be installed.

Problem description: There are several possible reasons for this problem: 1 Mobile phone setting problem 2. The software is unsigned or the signature is incorrect 3. Certificate conflict.

Solution: 1: Go to "Program Management"-"Options"-"Settings" of the mobile phone: "Install Software" is set to-All, and "Online Certificate Check" is set to-Off;

2. Re-sign unsigned software before installation;

3: Install after the parallel machine (please make a backup before the parallel machine).

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