Error prompt 1: The certificate has expired.

Problem description: The software certificate has expired.

Solution: 1: Adjust the mobile phone time to the certificate time limit (adjust the mobile phone time several months in advance) before installation. After installation, adjust it back to the correct time.

(How to adjust the time: Settings-Phone Settings-General-Date and Time-Date)

2: Re-sign the software

Error Tip 2: Certificate error.

Problem description: 1. The installed software is not signed. 2. If it's a JAR program, it's usually because the certificates are in conflict. (Many java games will give this error prompt. See Solution 2 below. )

Solution: 1: software signature;

2. Install programs (software/games) directly on the mobile phone or replace the memory card.

Error Tip 3: Update Error

Problem description: This prompt usually appears because the old version of the same software in the mobile phone was not deleted when the software was installed, and it was repeatedly installed. Or conflicts caused by different titles of old and new software installers.

Solution: 1: Install the new version of the software after uninstalling the old version;

2. Unpack the new version of the software and change the title of the installer to be consistent with the old version in the PKG document.

Error Tip 4: The certificate is not yet valid.

Problem description: The mobile phone time exceeds the time limit of the software certificate.

Solution: 1: Check whether the date setting of the mobile phone is correct;

2. Adjust the time of the mobile phone to the time limit of the certificate and then install it. Just set it back to the correct time after installation.

Error Tip 5: The required program access rights are not granted.

Problem description: 1. Due to the security problems of the third edition of Saipan system, the permissions of some programs are prohibited. A program without this permission cannot be installed, or the program has been signed. 2. Error in the certificate.

Solution: 1: Re-sign with unsigned software before installation;

2. Delete the mobile phone certificate authority restriction -XX mobile phone.

Error 6: The certificate is restricted.

Problem description: 1: It is caused by wrong software signature or multiple software signatures. 2. A high-authority program signed by a low-authority certificate.

Solution: 1: Re-sign with unsigned software before installation.

2. Certification authority required for the verification program, which should match the program issuing authority. (At present, the certificate authority generated by this forum is 17, and this problem may occur when signing a program with 19 authority. )

Error 7: A protected application provided by an untrusted provider 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).

Error 8: The file is corrupted.

Problem Description: The installer file is damaged or incomplete, which may be caused by file damage when downloading or solving the program.

Solution: Please make sure that the downloaded program file is good. Recommend to download again (from other posts) or decompress the program and try again.

Error prompt 9: No prompt.

Problem description: After the program is installed, clicking its icon can't run, which usually happens in JAR programs with Chinese file names.

Solution: Delete the installed JAR program, change the file name of JAR program to full English, and then try again.

Error prompt 10: Mobile phone failed to start.

Description of the problem: This problem usually occurs when the mobile phone is restarted after the program installation fails, partly because of the failure to upgrade the machine.

Solution: If a program fails to install, just take out the memory card and restart it. And delete the wrong program. If it appears after the upgrade of the mobile phone, it will be repaired again. It should be noted that some booted and memory-resident software cannot be solved by formatting. So these softwares need to be shut down or deleted before the soft grid.

Error prompt 1 1: This application is for development only. Continuing the installation may cause serious problems with the equipment.

Problem description: This is a disclaimer of the software.

Solution: Ignore it and continue the installation!

Error prompt 12: The validity of the certificate cannot be checked online. Please check the settings.

Problem description: Mobile phone setting problem

Solution: Settings-Phone Settings-Applications-Program Management: Software Installation-Select All, Online Certificate Check-Select Close.

I hope it helps you. . . . . .