xperia z2 not detected by xperia companion during repairing - Xperia Z2 Q&A, Help & Troubleshooting

my z2 suddenly turned off.
and now always gets stuck at booting screen and then i have to reset it by using volume up+power key.
so i tried using the xperia companion but while using the repair service it as soon as the led light turns green on my phone my pc shows "usb device malfunctioned and cannot be recognised"
i dont know what to do now.
plzz help

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Ritesh07 said:
my z2 suddenly turned off.
and now always gets stuck at booting screen and then i have to reset it by using volume up+power key.
so i tried using the xperia companion but while using the repair service it as soon as the led light turns green on my phone my pc shows "usb device malfunctioned and cannot be recognised"
i dont know what to do now.
plzz help
Click to expand...
Click to collapse
and here is the screenshot of the error

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>> restart your PC first.
if it didn't work then..
>>just use flashtool,,, flash the ROM,, keeping data ..all safe.
>>it will be perfect!!

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jeoleo7 said:
>> restart your PC first.
if it didn't work then..
>>just use flashtool,,, flash the ROM,, keeping data ..all safe.
>>it will be perfect!!
Click to expand...
Click to collapse
but hte flashtool doesnt work either

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Ritesh07 said:
but hte flashtool doesnt work either
Click to expand...
Click to collapse
>>
does your phone stays switched off?
if not hold power and volume + until it vibrates 3 times
>>
check if you installed the drivers correctly
you may install it from C:/ flashtool/drivers
>>
open flashtool as administrator
>> disable windows defender or any anti virus.
>>
if it still persists uninstall flashtool and reinstall it.
let it sync for the first time as it asks.
>>
just prepare flashtool and be ready to flash in such a way that you will plug the USB connected to the switched off phone to PC only when it asks and keep holding the volume down key.

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jeoleo7 said:
>>
does your phone stays switched off?
if not hold power and volume + until it vibrates 3 times
>>
check if you installed the drivers correctly
you may install it from C:/ flashtool/drivers
>>
open flashtool as administrator
>> disable windows defender or any anti virus.
>>
if it still persists uninstall flashtool and reinstall it.
let it sync for the first time as it asks.
>>
just prepare flashtool and be ready to flash in such a way that you will plug the USB connected to the switched off phone to PC only when it asks and keep holding the volume down key.
Click to expand...
Click to collapse
still not working...

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You also need to disable driver verification to install the drivers properly! Look in advanced start up settings!
Sent from my D6503 using XDA-Developers mobile app

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Chronic2k13 said:
You also need to disable driver verification to install the drivers properly! Look in advanced start up settings!
Sent from my D6503 using XDA-Developers mobile app
Click to expand...
Click to collapse
actually in win 10 you need to need t change that in recovery screen and i already did it, but the problem is still there

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>> uninstall Flashtool
Remove the old folders also.
>>let Flashtool sync for the first time.
>>install everything properly.
>>this should work.
If not you may try this on other PC
Or may be friends Pc. ??
>> that will definitely help.
?

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Use sony pc companion, not xperia companion. I had the same problem and i repaired it using pc companion. For me xperia companion did nt work.

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Try an older version of Flashtool! I tried flashing an ftf using the latest version and encountered the same problem! But all was good when I installed version. 18
Sent from my D6503 using XDA-Developers mobile app

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Maybe flashtool doesnt succeed cause if firmware has file fw.info
Try to unpack firmware and delete thaf fw.info file if exist and you wiill succed with flashing.
I had same problem with Z5 and I did like am wrote now.
Sent via Xperia Z2

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I have the same problem....Did you manage somehow to solve it??