Fastboot problems- Unlocking the bootloader

[Elnano26]

Good evening everyone I am writing to a problem with my phone (hoping to solve), as the title suggests I would like to unlock the bootloader of my phone but my phone does not go into fastboot mode.   As soon as I click the volume + button, the LED will light up blue for a few seconds, but then returns to red and the phone restarts, how can I fix it? Has anyone had the same problem? Thanks in advance for a possible answer!     :smileysmileywink:

[Thommo · Accepted solution]

Are you using Win 8 or 8.1 or a 64 bit based system - Also look in the Fastboot folder if you installed it for the alternative drivers

[Thommo]

Also are you able to unlock your Bootloader as the phone will not stay in Fastboot mode

[Elnano26]

Excuse the delay in response, for a few days I have had the internet, however, I resolved, at the beginning I wanted to unlock the bootloader with windows xp but with this software cellualre not connected in fastboot mode, then I tried it on my other computer with window7 64 bit and it works. Thank you also for the help! :smileysmileywink: 

[Fathy]

I have the same problem with my xperia p on windows 7 32 bit

[abumajid]

I have same problem, i can't unlock bootloader.  As soon as I click the volume + button, the LED will light up blue for a few seconds, but then returns to red and the phone restarts, how can I fix it? 

I am using win 7 64bit.

thanks in advance.

[Evocator19]

Hello, I have recently decided to try and root my phone to use certain apps such as titanium backup, and I have become stuck on step 3... I have installed the android sdk, I have Eclipse Juno, and downloaded the fastboot driver and replaced it, yet when I attempt to press the voume up button, at the same time as plugging in the usb nothing shows up and I have yet to find any answers that helps with this. If anyone could help me out I would appreciate it. I am using windows 7 OS and I do not know how to get past this section:

Connect to Fastboot

Turn off your Xperia™ T.

 Connect a USB-cable to your computer.

 On your Xperia™ T, press the Volume up button at the same time as you connect the other end of the USB-cable. For Windows users, when asked for a driver, point to the usb_driver folder where you placed the android_winusb.inf-file, and select the Android Boot loader Interface-file.

 When your device is connected, open a command window on your computer and go to the platform-tools folder within the Android SDK folder.

 Enter the following command: fastboot devices

 Verify that you get an answer back without any errors.

[RobbieD]

Same issue for me; Windows 7, 64-Bit.  My PC makes the double "bong" sound and in Device manager, it appears that I don't have the correct driver installed.   My Z2 light does stay blue, however.

[wiking76]

when i try to install drivers a windows message tell to me that i can't install it with me 64bit SO.. there's an alternative solution? I would install a rom but without unlocked bootloader i can't 

[T42]

How do you find the Fastboot folder? Sorry if this is a really dumb question, but I'm stuck at this point. I've downloaded the replacement file, no problem, but I can't find the original. The filepath specified on the developers website doesn't seem to exist!