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help unlocking bootloader

hey guys,
hopefully someone can help me, i'm trying to unlock my bootloader to install custom kernels.
here is when i think it goes wrong:
i'm using sony's official method but when i connect the phone in fastboot mode the computer doesn't ask for drivers like it should (says in instructions).
so i can't choose the modified driver that i've downloaded from the instructions.
thanks in advance!

you may already have it installed if you have installed flashtool.
I suggest deleting all sony/adb/phone applications on your computer, rebooting, and starting again

gregbradley said:
you may already have it installed if you have installed flashtool.
I suggest deleting all sony/adb/phone applications on your computer, rebooting, and starting again
Click to expand...
Click to collapse
that's correct indeed,
damnit.. i'm going to try it..

gregbradley said:
you may already have it installed if you have installed flashtool.
I suggest deleting all sony/adb/phone applications on your computer, rebooting, and starting again
Click to expand...
Click to collapse
even after a fresh install of my computer i can't get it to work.
i searched on google and found out that there are some issues with windows 8.
but after following specific instructions on windows 8 it still isn't working.
then i took an old windows vista computer from the attic and tried it with that.
it atleast asks for drivers but when i get the option to select the drivers myself it instantly disappears because the phone only stays in fastboot for about 10 seconds.
only thing i can think of is installing XP on my old system but is it normal it stays in fastboot for only 10 seconds? then it switches to charging mode.
unlock bootloader allowed is yes!

Download and install flash tool.
Run drivers.exe from the install folder.
Choose fastboot, flashmode and TX drivers.
Then try again for unlocking
Sent from my LT30p using xda premium
EDIT
W8 is a known problem with drivers. That's why is was failing before. Vista or W7 should work fine.

gregbradley said:
Download and install flash tool.
Run drivers.exe from the install folder.
Choose fastboot, flashmode and TX drivers.
Then try again for unlocking
Sent from my LT30p using xda premium
EDIT
W8 is a known problem with drivers. That's why is was failing before. Vista or W7 should work fine.
Click to expand...
Click to collapse
in the mean time i've read somewhere to use flashtool indeed.
got the drivers installed on my w8 system with flashtool, now the phone stays in fastboot (blue light)
then my next problem :laugh:
Open a command window and go to the tools folder within the Android SDK folder.
Enter fastboot.exe -i 0x0fce getvar version, and verify that you get a response back (for example "0.3"). This means your device is connected properly.
there is no fastboot.exe in the tools folder of sdk..
there is one in some folder of flashtool, can i use that one to complete the last point of the instruction?

Make sure you are running Google USB Driver package revision 4 or higher in your Android SDK
Click to expand...
Click to collapse
That is from step 8.
Did you download the google bit of the sdk?
EDIT
You could try this as well
minimal_adb_fastboot_v1.1.3_setup.exe - 2.12 MB

gregbradley said:
That is from step 8.
Did you download the google bit of the sdk?
EDIT
You could try this as well
minimal_adb_fastboot_v1.1.3_setup.exe - 2.12 MB
Click to expand...
Click to collapse
i finally found it.. it's not in tools folder anymore but platform tools.
i'm going to try again now..

Pollie81 said:
i finally found it.. it's not in tools folder anymore but platform tools.
i'm going to try again now..
Click to expand...
Click to collapse
yes..it has been moved. I forgot that myself

gregbradley said:
yes..it has been moved. I forgot that myself
Click to expand...
Click to collapse
it took a while and some extra grey hair but it's done..
i guess... it restarts and the phone went back to stock.
first i'm going to watch LA Ink on tv and then going to try to restore my backup and flash a custom kernel.
many thanks for your help! we got it working!
:good:

[Q] Fastboot problum with 64-bit Windows8.1

Hi, I updated my PC to 64-bit Windows 8.1 today and install htc driver 4.8.0.002, MTP/USB Debugging(ADB) is OK, but when I turn my one to fastboot mode and connect to my PC it just not go into "fastboot usb" mode, my computer show me that "Unknown USB device (device failed enumeration)"
What can I do?

zyy757 said:
Hi, I updated my PC to 64-bit Windows 8.1 today and install htc driver 4.8.0.002, MTP/USB Debugging(ADB) is OK, but when I turn my one to fastboot mode and connect to my PC it just not go into "fastboot usb" mode, my computer show me that "Unknown USB device (device failed enumeration)"
What can I do?
Click to expand...
Click to collapse
It's a known problem..... we need updated drivers

Update your HTC Sync Manager to the new version
Update to the new version 2.3.32.0 everything works well with Windows 8.1
Good luck

imurg said:
Update to the new version 2.3.32.0 everything works well with Windows 8.1
Good luck
Click to expand...
Click to collapse
do you know the driver version of it?

rider5512 said:
It's a known problem..... we need updated drivers
Click to expand...
Click to collapse
sad news..but still thanks for the info

zyy757 said:
do you know the driver version of it?
Click to expand...
Click to collapse
New driver version is 4.8.0.002.
Also make sure you have updated adb and fastboot to the latest versions

imurg said:
Update to the new version 2.3.32.0 everything works well with Windows 8.1
Good luck
Click to expand...
Click to collapse
Check the changelog, the latest version of HTC sync manager does not include any drivers for windows 8.1

rider5512 said:
Check the changelog, the latest version of HTC sync manager does not include any drivers for windows 8.1
Click to expand...
Click to collapse
I have the phone connected just now. I run "adb devices" and works.. "adb reboot-bootloader" and connects fastboot usb.
On device manager I open My HTC and see a driver from HTC Corp dated 09/23/13 and driver version is2.0.7.22
As a portable device driver is also dated 09/23/13 and is version 1.0.0.14
Can issue commands in fastboot or adb without any problems.

imurg said:
New driver version is 4.8.0.002.
Also make sure you have updated adb and fastboot to the latest versions
Click to expand...
Click to collapse
my driver is already 4.8.0.002, but the computer just not recognition my phone in fastboot mode

Have the same problem. I really need a solution !

MICH_** said:
Have the same problem. I really need a solution !
Click to expand...
Click to collapse
If your not having any luck, make sure to completely DELETE your old drivers, then download htc sync (from htc.com support), install it, and then just delete the sync application. Reboot win 8.1, try again.

zaphodbeeb said:
If your not having any luck, make sure to completely DELETE your old drivers, then download htc sync (from htc.com support), install it, and then just delete the sync application. Reboot win 8.1, try again.
Click to expand...
Click to collapse
Does not work

Hi,
This is how I got my HTC One to show Fastboot Usb when i plug it in to my PC.
First I downloaded and installed the latest java se development kit both 32 bit and 64 bit versions as I read somewere that we also need the 32 bit version for it to succeed on 64 bit. Next I installed the android sdk making sure that I had the latest available. After this I downloaded and installed the most up to date HTCDrivers 4.8.0.002.
I just rebooted my phone into bootloader unpluged to the computer then i pluged it in to show up as Fastboot USB.

I tried many different suggestions for getting fastboot to work with Win 8.1 x64 Usb 3.0, including those above in this thread.
Only one thing worked,
http://plugable.com/2012/12/01/windows-8-and-intel-usb-3-0-host-controllers

Windows 8.1 fastboot drivers

Hey there,
After upgrading windows 8 to 8.1, I cannot get my phone into fastboot. It seems that previously installed drivers on W8 are now gone.
Any idea how to fix this?

jimilegolas said:
Hey there,
After upgrading windows 8 to 8.1, I cannot get my phone into fastboot. It seems that previously installed drivers on W8 are now gone.
Any idea how to fix this?
Click to expand...
Click to collapse
Install the drivers again.

I've had the same problem in windows 8.1... Fastboot device cannot be recognized by the system, but i don't know why; the problem was "Error enumerating device id". If you see hardware id, it doesn't exists and the driver won't be found. I returned to windows 7.

gregbradley said:
Install the drivers again.
Click to expand...
Click to collapse
Mind if you shared a way of doing that?
Installing the official sony flashtool with its drivers didn't help + every other way I tried (that worked when I had 8) also resulted in failure.
PS:When I connect it in fastboot, windows says that "drivers malfunctioned, unknown USB device"

jimilegolas said:
Mind if you shared a way of doing that?
Installing the official sony flashtool with its drivers didn't help + every other way I tried (that worked when I had 8) also resulted in failure.
PS:When I connect it in fastboot, windows says that "drivers malfunctioned, unknown USB device"
Click to expand...
Click to collapse
Have you tried the drivers from flashtool (Not the sony one, the one by androxyde here on xda)

gregbradley said:
Have you tried the drivers from flashtool (Not the sony one, the one by androxyde here on xda)
Click to expand...
Click to collapse
Yes, but I cannot install them.
Sent from my Xperia T using xda app-developers app

jimilegolas said:
Yes, but I cannot install them.
Sent from my Xperia T using xda app-developers app
Click to expand...
Click to collapse
You have to do it safe mode or something similar
read this from flashtool.net
http://www.flashtool.net/disabledrivers.php

gregbradley said:
You have to do it safe mode or something similar
read this from flashtool.net
http://www.flashtool.net/disabledrivers.php
Click to expand...
Click to collapse
I've done that, but I still get the same windows usb error :/

jimilegolas said:
I've done that, but I still get the same windows usb error :/
Click to expand...
Click to collapse
OK, not sure what the issue is then, can you get access to a win7 machine? There are no issues with drivers on win7

gregbradley said:
OK, not sure what the issue is then, can you get access to a win7 machine? There are no issues with drivers on win7
Click to expand...
Click to collapse
Guess this is the only option now.
Anyway, thanks.

jimilegolas said:
Guess this is the only option now.
Anyway, thanks.
Click to expand...
Click to collapse
Same problem here. See my post: http://forum.xda-developers.com/showpost.php?p=46645468&postcount=129
No solution found... Yet

fastboot for windows 8.1 over linux and this is my option to work fastboot on win 8.1
pietrucci said:
Hi,
Seems my usb drivers don't work anymore in Windows 8.1. Tried every version of usb-drivers, removed existing drivers, disabled digital signing again but no succes.
Anyone with a solution already?
Click to expand...
Click to collapse
load wubi (windows ubuntu installer) over the link http://wiki.ubuntuusers.de/Wubi
than install ubuntu, on harddrive C:// and reboot your Pc
Now you have a linux in your current system, you can remove ubuntu (linux) in Programms & feautures list in windows.
now reboot reboot the system and isntall in ubuntu fastboot.
you musst give in the terminal sudo apt-get fastboot
and now you can flash your bootloader in linux.
but you musst sudo bevor you type fastboot flash type sudo fastboot flash boot boot.img
you say it is easy
gooogle wubi (windows ubuntu installer)

im here.. me too facing the same weird problem.
in 8.1 os it worked at first but then it didnt recognizing my device. reinstalled the 8.1 os and tested and same result. worked at first then fu**ed up again.
hope someone will get ride of this prob in 8.1ois :/

Same..
Exactly the same problem here. On windows 8, no issue. After updating to 8.1, "Error enumerating device id". I've tried everything, but nothing.
I had my xperia without kernel, and I REALLY needed Fastboot, so I had to go to a W7 pc, and no issue then.
Ohh, and I can't disable driver verification on W8.1 . When i'm in advanced boot menu, I just can't press any key. The keyboard doesn't work, and I have to Hard Reboot. Any idea?
EDITED
This worked for me : http://www.droid-now.com/2013/10/fix-working-fastboot-drivers-windows-8-1-x64/
So now I can use fastboot/ flashmode, but only if I connect the phone to an usb 3.0 port. On 2.0 the issue is still there.

fedemyth said:
Exactly the same problem here. On windows 8, no issue. After updating to 8.1, "Error enumerating device id". I've tried everything, but nothing.
I had my xperia without kernel, and I REALLY needed Fastboot, so I had to go to a W7 pc, and no issue then.
Ohh, and I can't disable driver verification on W8.1 . When i'm in advanced boot menu, I just can't press any key. The keyboard doesn't work, and I have to Hard Reboot. Any idea?
EDITED
This worked for me : http://www.droid-now.com/2013/10/fix...ndows-8-1-x64/
So now I can use fastboot/ flashmode, but only if I connect the phone to an usb 3.0 port. On 2.0 the issue is still there.
Click to expand...
Click to collapse
Nice share brotha.
I want to make it work for x32 bit
Sent from my LT25i using XDA Premium 4 mobile app

As I see the only way to get access to fastboot and flash mode is to use windows 8 or lower.
Here is the cause of our problem and there is no solution so far: http://blogs.msdn.com/b/usbcoreblog...8-0-but-fail-on-windows-8-1-with-code-43.aspx
EDIT: I used the old XP machine of my parents to unlock the bootloader and everything worked fine

well w8.1 certainly cannot use fastboot if you plug it into USB 2.0 port..as microsoft has change it usb policies in w8.1, the only way to use fastboot in w8.1 is to plug into a USB 3.0 hub, and install your driver the same way before..

[Q] Cant get into Flash or FastBoot Mode

Hi all,
i have got a strange problem.. i m using deodexed .145 rom in my xperia T and Cwm is also installed luckily... today i want to flash an ftf but when i connect my phone to computer it says usb device not recognized so i thought it is my windows 8.1 installed on my laptop so i went to my old computer running window xp fyi all drivers , sony pc companion and flashtool was already installed in both computers ok so when i connected my phone in flash mode it says in Flashtool Box that drivers are not installed for the connected device....so i installed flashtool , fastboot and other xperia t drivers from flashtool-drivers.exe but again same problem when i connect my phone it cant be connected to flash mode or fastboot mode and rather it reboots my phone again and again and my whole system freezes.... i dont know what is wrong.. all drivers are installed but i cant get in to fast as well as flash mode....i am fimiliar of all these processes and have flashed different roms 1000 of times... any idea what to do??
i also have tried different Cables in different ports but problem exits

n70shan said:
Hi all,
i have got a strange problem.. i m using deodexed .145 rom in my xperia T and Cwm is also installed luckily... today i want to flash an ftf but when i connect my phone to computer it says usb device not recognized so i thought it is my windows 8.1 installed on my laptop so i went to my old computer running window xp fyi all drivers , sony pc companion and flashtool was already installed in both computers ok so when i connected my phone in flash mode it says in Flashtool Box that drivers are not installed for the connected device....so i installed flashtool , fastboot and other xperia t drivers from flashtool-drivers.exe but again same problem when i connect my phone it cant be connected to flash mode or fastboot mode and rather it reboots my phone again and again and my whole system freezes.... i dont know what is wrong.. all drivers are installed but i cant get in to fast as well as flash mode....i am fimiliar of all these processes and have flashed different roms 1000 of times... any idea what to do??
i also have tried different Cables in different ports but problem exits
Click to expand...
Click to collapse
Umm that's odd..... You could try this method:
http://forum.xda-developers.com/showthread.php?t=2608770
I haven't had that problem and so I didn't try it. I hope it works for you and helps.

St.Jimmy90 said:
Umm that's odd..... You could try this method:
http://forum.xda-developers.com/showthread.php?t=2608770
I haven't had that problem and so I didn't try it. I hope it works for you and helps.
Click to expand...
Click to collapse
there is no solution to my problem in the thread you pointed out ...

I had same problem
I tried on
win 8
win 8.1
xp sp2 and sp3 and nothing happened
My only solution was windows 7
i tried flashing in win 7 and it worked : D
sounds strange but give it a shot
wish you luck

drn57 said:
I had same problem
I tried on
win 8
win 8.1
xp sp2 and sp3 and nothing happened
My only solution was windows 7
i tried flashing in win 7 and it worked : D
sounds strange but give it a shot
wish you luck
Click to expand...
Click to collapse
Thanks Windows 7 32 bit and usb drivers installed worked for me... thanks alot

Can't flash stock S5570 rom

As the title says I can't flash it (2.3.6 gb). Everytime I connect the phone in download mode I get 'USB Not Recognized' error, I've updated KIES drivers already and nothing happened.

Sorry, but I don't know how to help you. I got the same problem when I used my Windows 8 PC.
On my WinXP PC, it's worked.

I'll give a try on XP , too. I tried on Win 8.1 and 7 and didn't worked.

fordawin said:
As the title says I can't flash it (2.3.6 gb). Everytime I connect the phone in download mode I get 'USB Not Recognized' error, I've updated KIES drivers already and nothing happened.
Click to expand...
Click to collapse
tomi456 said:
Sorry, but I don't know how to help you. I got the same problem when I used my Windows 8 PC.
On my WinXP PC, it's worked.
Click to expand...
Click to collapse
fordawin said:
I'll give a try on XP , too. I tried on Win 8.1 and 7 and didn't worked.
Click to expand...
Click to collapse
First, you have to install SAMSUNG USB Driver into your PC
Then only you can Flash your firmware with Odin
USB Driver: http://www.mediafire.com/download/7srv709j7nkivj0/SAMSUNG_USB_Driver_for_Mobile_Phones.exe
Odin Multi downloader: http://d-h.st/6Rx
Samsung usb drivers works only with Win7, xp, and older than these
Whole discription about "how to" is here: http://forum.xda-developers.com/showthread.php?t=1255305
Enjoy and press thanks button

Also enable USB debugging in phone's settings(if not done yet)