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2014-02-16 10:30 AM
A similar problem to the other posters, my Sony Xperia Z won't start after a failed update attempt.
Following the support suggestions on the Sony website (http://www.sonymobile.com/sg/support/faq/w8-walkma
Solutions posted on this forum thread (http://talk.sonymobile.com/t5/Xperia-Z-ZL-ZR/My-So
When I plug the phone into the wall charger, the LED comes on red, the SONY logo appears on my screen, followed by a message indicating that "The Software update failed. Make sure that your phone is connected to the computer and try again.", and then the phone turns itself off. The cycle repeats itself with no indication that my phone's actually being charged.
Since it is unable to charge, plugging the phone into my computer does not trigger the update process to start, so I can't "try again", as the message so helpfully suggests.
The computer also does not recognise my phone as being connected despite following the PC Companion's instructions to 1) unplug the device, 2) remove and replace the battery (which I can't do, because the battery is built in), and 3) turn it back on (which, again, I can't do, because the phone won't charge in the first place), before 4) plugging it back into the computer.
Please help... Thank you.
2014-02-16 10:34 AM
Download sony update service,install on your computer.Repair your phone software with it.
2014-04-12 08:08 PM
Anyway to restore without deleting the data? I have the same problem, my phone keep reboot with the same error. The worst is I did not do any backup.
2014-04-12 09:22 PM
You cannot backup if the phone does not turn on.I am sorry.
2014-04-26 09:35 PM
Because of some reason, my Sony Z started to rebooting until the battery died. I've tried to reset it by pressing power and vol up. no use..
2014-04-26 09:45 PM
Power button+vol up until the phone vibrates 3 times.It should turn it off.Try to remove the SIM also.
2014-07-16 08:49 PM - edited 2014-07-16 09:17 PM
hi did a software update. but while the update was commencing i mistakenlt pulled the data cable out.
the phone just restarts non stop with the error"software update failed. this happens conitiuosly. i have tried to shut it down(powerbutton + volume) and thid did nothing.