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[Guide] Install Flashtool On Windows 8.1 [Fix] ~ Tanvir Hasan [28-03-2014]

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(Last edited by tmwky; 28th March 2014 at 08:15 AM.) Reason: Corrections
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Angry [Guide] Install Flashtool On Windows 8.1 [Fix] ~ Tanvir Hasan [28-03-2014]

Flashtool For Xperia Devices

Flashtool : It's a S1 flashing software that works for all Sony phones from X10 to Xperia Z Ultra. They all use the S1 protocol for flashing firmwares.

If you're having with Flashtool install or Fastboot ADB Driver installing issues on Windows 8.1 and Windows 8.1 (64bit), then you should take these steps to solve this.

All helpful Screenshots about this guide is here
Step 1

Download Flashtool From Flashtool Website Last Version :[/COLOR]
If links not work, dont worry they update their links.

Then Download This Windows Update

Step 2

Install Windows Update

Step 3

Install Flashtool

Step 4

Then Open CMD (Run as administrator) Then Paste this code and Press Enter.
bcdedit /set testsigning on
and Then Restart your PC.

Step 5

Install Flashtool Drivers (Run as administrator) from "C:\Flashtool\drivers"

Step 6

Then Open CMD (Run as administrator) Then Paste this code and Press Enter.
bcdedit /set testsigning off
and Then Restart your PC.

if this isnt work on your pc then try also this.

Step 1

Go to Settings (Charms Bar) > Change PC Settings > Update And Recovery > Recovery > Restart Now (Advanced Startup)
it will restart to Advance Startup automatically

Step 2

In Advance Startup

Troubleshoot > Advanced Settings > Start-up Settings > Restart

Step 3

After rebooted you will get this screen. Here to choose options we have to use function keys. Now press "F7" to select "Disable Driver Signature Enforcement" .
Now your PC will boot with Disabled Driver Signature Enforcement and you will be able to install Flashtool/Fastboot drivers.

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Latest flashtool working with Windows 8.1 without any problem. All you want to do is Disable Driver Signature Enforcement and install drivers (like Windows 8 ) that's all.

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