I need to unlock the bootloader of my Sony Xperia M2 dual. It's currently in stock. As soon as I connected my device in fastboot mode by pressing the volume up button and connecting the USB cable to Lenovo IdeaPad 300 with Windows 10 64-bit, my device illuminates with blue light which indicates that the device is connected in fastboot mode.

When I tried to update the fastboot driver by right-clicking the S1Boot Fastboot, clicking the update driver option, selecting the browse my computer option, and selecting the usb-driver from google folder, it's showing an error that Windows found the driver but encountered an error while installing the driver. It's also showing an error that the hash for the file is not presented at the specified location or the file is appear to be a victim of tampering.

How can I update the fastboot driver for my Sony Xperia device?

2 Answers 2


Use the fastboot drivers bundled with Flashtool.

Additionally, those drivers aren't properly signed. Disable Windows driver signature enforcement as shown here, reboot, then install the driver. Note that you are also advised to turn it back on after you're done.

  • Thanks Andy. Will it creates any other problem to my laptop?
    – Arun
    Aug 27, 2017 at 2:16
  • @Arun It shouldn't as long as you turn it off after.
    – Andy Yan
    Aug 27, 2017 at 7:01

Had the same problem with my XZ2Compact -- the device would work unter Win7 properly, would be available for adb devices, but would not show up via fastboot.

As I learned in Sergey's comment in the according thread:

"...phone presents different device identifiers to the computer in these modes..."

The Google USB driver would not work for me. But on Sony's drivers listing you'll find the Fastboot driver. It's a tiny android_winusb.inf file (in fact, just a modified *.inf file that enables Fastboot support), copy it to the Google ...\usb_driver\ folder, replace the one in there.

Then, update the device's driver in Windows Device Manager as you did, picking the modified driver folder. You should be able to pick devices like Android ADB Interface or Android Bootloader Interface then.

As this driver combination isn't signed, Windows will warn you several times or ask for permission -- but as it's the files from the official Sony and Google site, you should still be fine. Worked for me!

  • I don't think replacing the file on Google's usb_driver folder is necessary. Browse directly to the fastboot driver file to update it instead.
    – Andrew T.
    Jan 3 at 11:10

Not the answer you're looking for? Browse other questions tagged .