I have since two years a Nokia N810. I bought it on ebay. Now, i have a problem. I locked the device yesterday evening, today morning it ask me about security code. I dont have it and the seller on ebay don't remember it anymore. The Standard Nokia Code '12345' dont work. What can i do? On my device are stored some important contacts. If i flash, i will lost all my data and files. Is there an option to calculate an 'mastercode' or something like this?

If there is no chance to restore the code, which is the correct *.bin file for reflashing my device? I have the RX-44

I found some files here in forum, but which should i use?
Latest Version or v51.3?

http://talk.maemo.org/showthread.php?t=25002