dodgy conversion, icn 520

hi, a while ago i stupidly bought some software off ebay to convert my icn520 to a pda running windows CE, i have never been able to work out how to get the programs to run. when you click on the start icon it comes up with some message saying it cannot locate the file.
is there anyway i can convert it back?.. i did manage to do it at one point but then tryed to convert it back to a pda and since then i have had no joy with it. its basically useless to me..
if anyone can help me get it back to a standard navman it would be greatly appreciated.
p.s. i did use the search function but had no joy.
thanks, jamie.

[mikealder]

On the back of the device should be a switch to fully turn off the power, put this in the off position for around 60 seconds then switch it back on, depending upon what you have done by installing bogus software this power off/ on should re-load the normal Navman software to the device - Mike