Certificate expired?

[Brutto777]

hi
Trying go friendly with my new 5500, but it seems not loving me
i have tried to install new themes, but its always sertificated expired or unable to install messages? What am I doing wrong?
Thx

[N/A]

You're trying to install a file signed with an expired certificate. Change the phone time back (to last year, for example), install, and change the time back.

[krapiks]

Originally Posted by N/A

You're trying to install a file signed with an expired certificate. Change the phone time back (to last year, for example), install, and change the time back.

I tried, but it says that time is wrong !