HTC Sensation users can now expand the horizons of their smartphone’s limitations. Yes you can now unlock your smartphone to make the most out of your precious device. It is to be noted that unlocking the device will void its warranty. Unlocking your Sensation smartphone would enable you to install various custom ROMs such as ICS, Cyanogen Mod and so on. We wont be responsible for any harm caused to your device during the updation procedure that is unlikely to happen if you follow the instructions carefully. The updation procedure is only applicable to HTC Sensation smartphones that are network unlocked so do not try it in any other devices as it might not be reversible and will harm the device by blocking it. Pre-Requisites: You must backup all the user data present in your phone since chances of data loss or corruption are there. Having a backup will enable you to replace the lost data if any damage occurs. Follow the link posted below to backup and restore all your data easily Pre Upgrade Instructions for Rooting and Firmware Update Must Have:
Steps to Unlock HTC Sensation: Step-1: Download PG58DIAG from the Must Have section to your computer and connect your phone to the computer via original USB cable obtained at purchase time. Copy the downloaded file to the root folder of your phone’s SD
Card. Step-2: Disconnect the USB Cable and enable USB debugging in your phone from the path “Settings > Applications > Development > USB debugging”. Make sure to tick the option of USB Debugging. Step-3: Power off the phone to enter into Boot loader or Hboot mode by pressing the Volume down and Power button simultaneously. Next press Volume down button to enter DIAG. Here you will be prompted to place the phone horizontally so do it then select the option of “Clean S58 Data” by pressing the Power button. Step-4: Now you can check whether your device has been unlocked successfully or not by entering the SIM card of any other operator. Delete the “PG58DIA” file and reboot your phone. In case the process gets stuck somewhere in the middle then, you have to re-apply the entire procedure again from the beginning. You can now restore the back up of all the data created and aslo re-configure the APN, Internet and other Settings. Thus you can easily unlock your HTC Sensation smartphone by following the steps mentioned above carefully.