topic Re: Xperia Z3 stuck in startup loop? in Z Series

Xperia Z3 stuck in startup loop?

manmix — Tue, 15 Dec 2015 20:33:16 GMT

Hi guys,

When I went to bed last night my Z3 was working fine. When I woke up, any app I opened closed with the "___________ has stopped" message, so I decided to reset my phone. Now it's stuck in a loop where it will turn on until it gets to the loading page with the blue wave background before turning off and starting this again and again until I hit the little reset square by the microsd with a paperclip.

I've tried connecting it to PC companion and the Mac version (I have a mac at home but can access PCs.) Once it gets to the part where I have to hold the power button and down key while plugging it into the computer, it does nothing and I can't move forward.

I can't seem to put it into flash mode, and I tried installing the EMMA flasher program but it wouldn't recognize that my phone was connected. After more googling seems that maybe unfortunately my phone needs to be in flash mode for this to work.

I haven't modded my phone, haven't installed many apps, and I actually know nothing about phone dealing with/ programming/ booting/ computer language words so some things I am reading online definitely go over my head. I am willing to try though!

My phone will still charge though! (Yayy.....)

I really have no idea what to do. My phone is important to my job and I've already budgeted to the max for this month so buying another isn't an option. It really **bleep** that this happened all of a sudden without warning.

Any help is appreciated, thanks.

Re: Xperia Z3 stuck in startup loop?

Uliwooly — Tue, 15 Dec 2015 21:04:00 GMT

@manmix

remove both SIM and SD cards and check again

Re: Xperia Z3 stuck in startup loop?

manmix — Tue, 15 Dec 2015 21:12:35 GMT

Thank-you for your reply!

Unfortunately, that is making no difference.

Re: Xperia Z3 stuck in startup loop?

Uliwooly — Tue, 15 Dec 2015 21:24:21 GMT

@manmix

charge your phone 100% and then try again with PCC, the phone has to be remain off.

Re: Xperia Z3 stuck in startup loop?

manmix — Tue, 15 Dec 2015 21:31:56 GMT

Thanks again @uliwooly !

However, the phone is at 100% and still won't connect to PCC, with or without the sim card.

Re: Xperia Z3 stuck in startup loop?

Uliwooly — Tue, 15 Dec 2015 21:45:43 GMT

@manmix

Does the phone charge when you connect the phone to the computer? try different USB ports.

Re: Xperia Z3 stuck in startup loop?

CameronT — Tue, 15 Dec 2015 22:43:58 GMT

Hi manmix,

Welcome to the community!

To elaborate on what uliwooly has been saying, make sure the phone is completely off by holding the power button and the volume down button to force it to completely shut down, and then run through the software repair process HERE.

The computer won't be able to detect a phone that isn't turned on, but double check that the charging LED is coming on when you connect it to your computer. Remember to unplug it when you start the software repair process though.

Re: Xperia Z3 stuck in startup loop?

manmix — Wed, 16 Dec 2015 00:53:44 GMT

@uliwooly Thanks again for your help! I can tell that the phone is charging when I plug it into my computer because the LED turns on.

and @CameronT woah! That's a really detailed guide, I like it! However I get stuck at step 10 (even when holding power + up until it vibrates 3 times to make sure it's off)

Re: Xperia Z3 stuck in startup loop?

CameronT — Wed, 16 Dec 2015 00:58:54 GMT

@manmix

On step 10 you only need to hold the volume down key as you connect it. You continue to hold it until the screen on PC companion changes.

When you do this, is PC Companion not detecting that you've connected anything (i.e nothing on screen is changing)? And is your phone completely off as you do this process?

Re: Xperia Z3 stuck in startup loop?

manmix — Wed, 16 Dec 2015 01:08:46 GMT

@ CameronT

It won't detect my phone at all when I hold the volume down as I plug it in. Even holding it for a few minutes. If I let go of the down button while it is plugged in, it still does not detect my phone/ no LED comes on. If I plug it in right after, the LED lights up saying it is charging, however it does not recognize that my phone is connected in Sony Bridge. (I am at home now and therefore am on a mac).

Thanks.

Re: Xperia Z3 stuck in startup loop?

CameronT — Wed, 16 Dec 2015 01:21:55 GMT

@manmix

Try these methods one after the other. Verify after each method whether the problem was solved, before trying the next one.

Make sure that the USB cable isn’t damaged. Try using another USB cable or another USB port on your computer.
Restart your computer.
Update the USB drivers on your computer. Start the PC Companion or Brigde for Mac application on your computer. The USB drivers are installed automatically.

Re: Xperia Z3 stuck in startup loop?

manmix — Wed, 16 Dec 2015 01:56:42 GMT

Hi @CameronT

It's definitely not the USB port or cord as I have tried both the ports as well as tried them with my tablet and they work fine. If I try and turn on my phone (sending it into the boot loop) PC companion will detect my phone and try to connect, but it will reboot once again before it has the chance.

As for the USB drivers, if I downloaded PC Companion today, would they be up to date or do I have to get them from somewhere else?

Thanks,

Sophie

Re: Xperia Z3 stuck in startup loop?

Uliwooly — Wed, 16 Dec 2015 02:08:07 GMT

@manmix

Do you have the latest JAVA on your computer also make sure to disable the firewall and antivirus.

Re: Xperia Z3 stuck in startup loop?

Uliwooly — Wed, 16 Dec 2015 02:11:40 GMT

@manmix

Something that has worked for my Xperia Z

Charge the phone for 1 hour > on your computer run PCC > follow all the steps to repair the Xperia Z3 > connect the phone to the computer > Press and hold power & volume up for few seconds so it'll turn off > as soon as it does (turn off) > release those buttons and press and hold the volume up key so it can't be detected by PCC

This might take few attempts and it might be frustrating but it could work.

Re: Xperia Z3 stuck in startup loop?

manmix — Wed, 16 Dec 2015 02:28:04 GMT

@uliwooly I am not sure about the java and firewall, as I have a macbook and have not added any of these things to it as far as I know. I have however tried this on two different PCs at work today.

As for the second reply, I can't follow all the steps to repair the z3 in Sony Bridge as I get stuck at step 10 - once I reconnect the phone while holding down the volume key, nothing happens and I can't move on.

Thanks again.

Re: Xperia Z3 stuck in startup loop?

Uliwooly — Wed, 16 Dec 2015 02:57:21 GMT

@manmix

if you can borrow a PC and give it a shot, also try different USB ports with your Mac, if nothing work you will have to contact your Local support

Re: Xperia Z3 stuck in startup loop?

Ctriebs — Fri, 09 Feb 2018 00:20:26 GMT

I’m having the same problem with my Z3v. I tried to click on the shared link, but it says access denied. Any way you could share it again, CameronT?

Re: Xperia Z3 stuck in startup loop?

Uliwooly — Fri, 09 Feb 2018 00:25:41 GMT

@Ctriebs

Which link are you referring to?

Also, keep in mind that you have the Verizon variant, which means that repairing the phone through XC its not possible, you have to contact big red for that.

Re: Xperia Z3 stuck in startup loop?

Ctriebs — Fri, 09 Feb 2018 00:34:07 GMT

@uliwooly

It was shared in message 7.

I thought I could give it a shot even though it’s a slightly different version of the phone. I’ll try to find out what Verizon has in the way of phone support.

Thank you!

Re: Xperia Z3 stuck in startup loop?

Popee — Tue, 09 Oct 2018 09:59:50 GMT

Follow these steps

1. Download and install Xperia companion

2. Hold the down volume button plus the power button to shut your phone off properly

3. Launch the xperia companion on yoyr pc and get it ready to receive your mobile

4. Connect your phone to your pc with the usb while holding the down volume button.

5. Follow the screen prompts until xperia companion finishes restoring your mobile.

Note. You will loose every content in your phone memory.