Enter code for unlocking sim card

i saw this option in the menu of the SETTINGS of my n900 since i update its firmware. i enter the pin code of my my sim but it says wrong code.i also tried the lock code but its wrong also. i am just worried coz i will travel to other country next week,and would not be able to use another sim card for my n900. i didnt tried to put the new sim card yet because it will automatically overwrite my prepaid internet settings.
i just want to know if i can still use other sim card without asking for a code. is my phone locked now since i update the firmware?
 thanks!

I'm not 100% sure but I think it's for any future simlocked handsets where you'd enter the unlock code from your network.
Also I wouldn't worry about your internet settings when switching simcards because when you switch back, your handset should reset all of your internet setting back to normal again
Message Edited by foxmeister on 23-Jan-2010 01:59 PM
If this Post is helpful. A click on the White Kudos star is always Appreciated
Last Nokia: Nokia Lumia 800
Current Phone: A Non Nokia Device
Previous Phones:Don't Ask ;-)

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