How can I unlock my Blackberry Tour for international?

You will have to buy the code to unlock first then :Once you have received your BlackBerry Tour unlocking code, it is very simple to enter it:

1) Ensure there’s a SIM card in your device. The card can be the one you wish to employ or any other SIM.

BlackBerry Manage Connections Icon

2) Turn off all wireless connections via your BlackBerry Manage Connections icon.

3) Open your BlackBerry Options menu and click Advanced Options. Scroll down to and click SIM Card

4) On the SIM Card screen, type the letters M, E, P, D. You’ll see your display flash briefly, and a new screen with information like ID, Personalization, SIM, Network, etc., appears.

BlackBerry SIM Card Information Screen

5) Next, type M, E, P, 2, and a dialogue box requesting a network code appears. Enter in your unlock code, click your trackball to confirm it, and voila, your Tour’s unlocked.

6) Remove your device battery, insert the appropriate SIM card and then restart your handheld. Next, open up your Manage Connections options again. Select Mobile Network Options and then change the Network Technology from 1XEV to GSM/UMTS. (Remember, if you want to go back to CDMA, you need to switch back the network technology option.)
http://www.unlocking.com/BlackBerry-Tour-Unlocking.html

You may try this site http://www.theunlockarena.com/blackberry-tour/rs13wp9/ .This is the unlocking site .If your mobile is GSM means, try this site.

good one, thanks for this questions and answers given by the users too..

i too tried this site rocker… thanks.

you can get it done from online