Be patient and wait until it completes.

Furthermore, press Next to initiate the Device driver installation.

Now the Device Driver installation wizard will popup.

Depending upon your PC configuration, it’ll start the installation of 32-bit or 64-bit drivers.

So type Y and press the enter key to continue.

Moreover, it’ll ask whether to install device drivers or not.

These files are ADB, AdbWinApi.dll, AdbWinUsbApi.dll, and fast boot.

Just within few seconds 4 files will be copied.

As your press the enter key, the installation will begin.

So again type Y from your keyboard and press the enter key to continue.As your press enter, it’ll ask to install Android ADB driver System-wide which contains the fast boot files.So type Y from your keyboard and press the enter key to continue. It’ll ask to install ADB and Fastboot.As you launch it, a blue screen will appear.Right-click and Run it as Administrator.Download and Extract 15 seconds ADB Installer on your computer.It installed a generic Android driver and in the list of devices it does not say 'SONY' But Android under 'Universal Serial Bus Controllers'.ADB Installer v1.4.3 – Latest Steps to install ADB Installer on Windows OS NB! It did not install the Sony driver as specified by Jolla. Zadig installed the driver and then it worked. I chose WinUSB.sys in the automatic driver list. Zadig recognizes that the connection to the phone is broken. I installed Zadig and started it up with the phone connected in fastboot mode (fastboot mode is reached on an Xperia XA2 Ultra if you turn it on while gently pressing volume down as it is connected with USB to the computer - this information is in the installation 'manual' that you read when installing Sailfish X). I cannot be sure that it will work for you, but I did this: I was able to use Zadig to install a USB-driver that made it possible for me to subsequently install Sailfish X on my XA2 Ultra. Disclaimer: I do not take any responsibility if you follow what I write below.

Htc fastboot driver windows 10