Secure Connection in j2me !!!

[Van Vu]

Dear all,

I have signed my midlet with a certificate from Thawte to make a ssl secure connection. Unfortunately, this certificate already expires, so I changed the date of my PC and run it successfully on the emulator. However, when I put it on the real device, my phone cannot connect to server, the server said that the connection failed during the handshakde. I tried changing my date on the phone, but it also does not work.

Do you have any clues, please help me out.