Bought a blackberry 8520 on ebay and it is blocked

Hi to which network it is blocked to?you can unlock your mobile by unlock codes..the safe and best way of unlocking is by unlock codes and my personal request is that don't go for software unlocking because sometimes the software might get corrupted and may your data will be lost due to that,its my bad experience so I went for unlocking by codes from here mobileunlocksolutions and unlocked.you can too try but see to that whether your country and provider is listed..because for some service only codes are available..check with that and if your country's provider is listed then get codes and unlock your blackberry..before unlocking your mobile you can get clear instructions about how to unlock your mobile for that you can visit mobileunlockguide to get step by step instructions..

Hello,
You Can Unlock Your BlackBerry 8250. Call Your Network Provider To Ask Your BlackBerry Unlock Code. But your Network Provider Takes Time To Give You Unlock Code.
If You Want Your Imei Unlock Code Instantly. Buy BlackBerry Imei Unlock Code From Third Party. Many Site Available Online To Provide Imei Unlock Code.
I Hope This Will Help You.
Thank's

Hello,
You can easily unlock your Blackberry cell phone,Simply enter unlock code through mobile keypad.You can get unlock code by BLACKBERRY 8520 UNLOCK CODE provider with Instructions.
THANKS ! ! !