What sometimes works is to leave the radio switched on (undisturbed) for over 11 hours (overnight) and it might reset itself automatically.
Failing that, it will have to be taken in to be unlocked + recoded. The entry instructions can be found here http://www.davidsonelectronics.co.uk/code_entry.htm
Please post back here whether this was successful or not
RegWorts
May 2008
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