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Guide - Method 2
1. MAKE A NANDROID BACKUP USING RECOVERY - (Completely switch off your phone, Press Volume down + Power button to get into bootloader, Volume down to recovery then press power button to get into Recovery. Volume down to "Backup and Restore" in recovery. Press Power to backup and your done!
(Make a backup in Titanium backup if you don't want to or can't nandroid backup. Menu > BAtch >Backup systems data + Apps with data)
2. Download PG58DIAG for the Sensation HERE or FROM MULTIUPLOAD
3. Copy the PG58DIAG file into the Root folder of your SD card (The main Folder of your Memory Card)
4. Turn off your phone Fully and reboot into the Bootloader/HBOOT screen (see post 2 on how to get to bootloader screen)
5. Press Volume Down to Enter DIAG - Place the phone horizontally when it asks you too. (Flat)
6. Press power button to select "Clean S58 Data
7. Press power again to "clean S58 Data".
8. POW - your unlocked! Try a SIM card from a different provider!
9. Delete the file from your SD Card (Delete PG58DIAG) and REBOOT!!
Your phone Will set up for the first time, go through it all till you get to your home screen
10. Go back into recovery and restore nandroid backup. same method as step 1 above. but instead of backup, you use restore feature
(Use Titanium Backup to restore if you used it to backup instead of Nandroid backup)(Menu > Batch > Restore System Data + Apps with user data)
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