Downloading the wrong tool can brick your Xperia or install malware. Here are the for a “extra quality” bootloader unlock tool.
If says "Yes" , you can proceed. If it says "No" , the device cannot be unlocked through official means. sony xperia bootloader unlock tool download extra quality
: Unlocking is a prerequisite for Sony’s Open Devices program , which provides resources for building and running Android from the Android Open Source Project (AOSP) on Xperia hardware . Downloading the wrong tool can brick your Xperia