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[Help] Xperia doesn't stay in fastboot mode

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By felipevsw, Senior Member on 5th October 2012, 03:29 AM
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I'm trying to unlock the boot loader of my Xperia U. But I'm having some troubles...

When I try to enter fastboot mode (pressing Vol Up + plugging the data cable in), I get a blue light (as supposed to) and on the Device Manager appears "S1Boot Fastboot", but my device doesn't stay on fastboot mode...
The blue light turns off and the "S1Boot Fastboot" device on the Device Manager disappears... This happens after 3 seconds after I plug the data cable in... and the phone enters in charging mode...

Is this a hardware problem? Or am I doing something wrong?
5th October 2012, 03:37 AM |#2  
mrsatan's Avatar
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Driver on windows isn't installed correctly. Point it to the drivers directory.

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5th October 2012, 03:43 AM |#3  
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Quote:
Originally Posted by mrsatan

Driver on windows isn't installed correctly. Point it to the drivers directory.

Sent from my LT26i using Tapatalk 2

How can I point to something that is not there (on device manager)?
5th October 2012, 06:44 AM |#4  
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Thread moved to Q & A section, post in the relevant section next time.

Try re-installing the drivers after removing them and restarting your PC.
- If possible try to connect to a different system altogether so as to confirm if this error is not specific to your system.

Cheers !
5th October 2012, 06:49 AM |#5  
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Quote:
Originally Posted by felipevsw

How can I point to something that is not there (on device manager)?

Try download flashtool
Inside flashtool there a driver folder install that

Trust me its the easiest way to install fastboot driver
The free pain in the ass way

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5th October 2012, 07:45 AM |#6  
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Quote:
Originally Posted by Theonlyzii

Try download flashtool
Inside flashtool there a driver folder install that

Trust me its the easiest way to install fastboot driver
The free pain in the ass way

Sent from my LT26i using xda premium

That doesn't always work. Plug the phone in in fast boot mode. Should pop up New driver

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5th October 2012, 01:14 PM |#7  
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First, I'm sorry for the wrong section, cooleagle. Will be more careful next time.

I already have flashtool installed, and I already installed the drivers within it. What left for me is try to connect to another computer.

For me seems to be a hardware problem at first, not a software.. but I will try your suggestions.

BTW, on flashboot mode it stays.
5th October 2012, 01:43 PM |#8  
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As soon as the s1boot pops up in device manager right click and select update drivers. Normally Windows automatically installed the drivers provided it is connected to internet

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5th October 2012, 02:50 PM |#9  
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Fastboot driver is the android_winusb.inf file, right? I point to that, but Windows tells me it could not find the propper driver...

The thing is: no matter how fast I am on pointing to this driver, the device always vanish first on Device Manager... Is this normal?
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5th October 2012, 03:00 PM |#10  
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Did the same for me when i tried the first time but i was able to update the drivers just before it disappeared. Also one thing that happens on my phone is if i keep the volume button pressed for long it reboots, if i leave the button as soon as the blue light comes up it stays.

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5th October 2012, 03:08 PM |#11  
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Quote:
Originally Posted by felipevsw

Fastboot driver is the android_winusb.inf file, right? I point to that, but Windows tells me it could not find the propper driver...

The thing is: no matter how fast I am on pointing to this driver, the device always vanish first on Device Manager... Is this normal?


i had the same problem back then

But that flashtool method saved my day
I've tried that method that you have to be fast to install the driver
But it never works

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