The mobile phone QQ1.0 (s60v5) beta2 _ build0402 cannot be installed on Sony Ericsson U 1i mobile phone. The system has been upgraded to the latest with us, and the certificate signature has been downloaded. You met the certificate door.

The basic feature of the certificate gate is that the installation software shows that the certificate has expired, and the time adjustment will show that the certificate has not taken effect.

The certificate door can't be solved. Some engine oils have tried to brush and adjust the time, but they all ended in failure.

The certificate door may be caused by JS brushing machine, changing IMEI and clearing the call time.

Certificate door has certificate time difference (time difference between certificate time and mobile phone display time)

For example, the time difference is 1 month, 10.0 1, and the applied certificate must be 1 1 to take effect.

PS: The time difference between applying for a certificate ranges from 2 days to half a year. Never brush the cup door oil at will.

Otherwise, the time will be attributed to the date of firmware update, and you will never wait for the certificate to take effect.

In addition: original licensed goods, Hong Kong banks do not have a certificate door, and friends can buy oil in Hong Kong with confidence.