Solved! Go to Solution.
If it is the C5-03 firmware that is different enough so that Polarbit games do not work, then:
a) users (like your or me) cannot do anything about it
b) Nokia might be able to do something about it, but is unlikely to do so
c) Polarbit might be able to do so, and is more likely to do so than anyone else
So, if you like their games and want them, try contacting Polarbit: