Certificate Problem S60 3rd Edition: Certificate Expired

Certificate Expired

Certificate is the important thing in Symbian OS, especially in 3rd edition. When you install a software from sis or sisx file (not jar java file), phone will try to verify the certificate.

For example, sisx file has 01 January 2011 to 01 September 2011. It means that you are allowed to install it between that day. How about installing that software on 17 December 2011 (for example)? It's easy. Just set back your phone date! But be careful. If you set your phone date too far, certificate will error too. Try to find the right time

See: Hack Symbian without Any Certificate - work on my E75