Nokia 73 themes - help please

[Zinskia]

Hi - l have downloaded some free themes i.e. sis files but every time l try to install them in comes back with error message saying that the certificate has expired, anyone able to help me please?

thanks Zin

[petrib]

Cange the phone date back (a few months) for the duration of the installation (and then back).

[borodin]

your can SWITCH OFF certificate check, if it does not help you can get certificate online to sign your theme