Problem simulating a key press on Python for Symbian platform on a Nokia 5th ed phone

I am developing an app for Nokia 5800 Music Express (S60 5th edition) using PyS60 (Python for S60) ,I want to simulate a KeyPress say if a message comes,I detect a message and Press a Key.

There does exi开发者_如何学Gost a Keypress module for PyS60 for 2nd edition phones which allows this. However I have not been able to install it on my 5th ed phone. Is this module portable? If yes then how do I install it (I get certificate error) and If no then any alternatives for simulating a key press on a 5th edition touch phone?

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There are compatibility breaks between 2nd and 3rd editions so binaries developed on one won't work on the other.

There's also a keypress module for 3rd edition. It should also work on 5th edition but I haven't tested it myself.