I am trying to unlock the bootloader of my Sony Xperia P mobile. I am trying to do it in the official way through Sony website. Once I agree to their terms and conditions and enter my IMEI no details, I get the unlock key. Then I am following their procedures. But instead of installing android studio to go into fastboot mode, I installed only the Minimal ADB setup.
They have given a 2kb size inf file (ADB interface file). I also downloaded an app called quick boot (reboot) to get into fastboot mode. When I enter fastboot mode, the notification light in the phone will turn into violet color, at the same time, I will have Device manager opened in my windows 7 system. There it will show S1 fastboot and I have to right click and update the driver by pointing it to the 2kb size interface file. Then I will execute two fastboot commands to unlock the bootloader fo my phone. This is what my understanding about the procedure.
But while pointing it to the inf file, it says windows found the driver software for your device but encountered an error while attempting to install it and system cannot find the specified file.
I don't know how to solve this. I have read many online forum threads on this still no understanding of how to resolve this. Please help me with this.