HELP! No Mobile Network Connection

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http://androidforums.com – I am the proud owner of a Sensation 4G. I tried unlocking it by clearing the "S58 Data". Since then when I put in any sime I get the following errors when I search for a mobile network: Your SIM card does not allow a connection to this network This happens with all the SIM Cards I have tested from various providers. I have also tried to connect to a network manually and this is the error i get: Unable to connect to the specified network. Please help me because its stranged my phone is T-Mobile Branded I got it unlocked and it worked with a Simple chip, now I am in (General)