Xperia Z keeps rebooting on 'Sony'

[kaykaa5]

Hi,

Recently my Sony Xperia Z device is showing some issues. One of them (to start with) is that the battery is dropping really hard from for example 40 percent to 13 percent. The strange thing is that it also goes up from (for example) 43 percent to 50 percent. These issues started when my phone got really warm from lying in the sun for a short period. It also doesn't charge properly when it is on the charger.

Now the real problem is that yesterday my phone got out of battery and it wont start up anymore. When I try to start up by holding the power button I don't get any response from it. When I put it on the charger it keeps restarting/rebooting on the 'Sony' logo. The device keeps doing this without doing anything else.

I've tried to flash the device with the Sony Update Service, without any luck.

I am really out of ideas and I'm hoping that you guys could help me.


Greetings,

Kay.

 

[androidtweaker1]

Hi,

Recently my Sony Xperia Z device is showing some issues. One of them (to start with) is that the battery is dropping really hard from for example 40 percent to 13 percent. The strange thing is that it also goes up from (for example) 43 percent to 50 percent. These issues started when my phone got really warm from lying in the sun for a short period. It also doesn't charge properly when it is on the charger.

Now the real problem is that yesterday my phone got out of battery and it wont start up anymore. When I try to start up by holding the power button I don't get any response from it. When I put it on the charger it keeps restarting/rebooting on the 'Sony' logo. The device keeps doing this without doing anything else.

I've tried to flash the device with the Sony Update Service, without any luck.

I am really out of ideas and I'm hoping that you guys could help me.


Greetings,

Kay.

Try flashing the firmware using flashtool
Whats the model of your phone?

 

[kaykaa5]

Try flashing the firmware using flashtool
Whats the model of your phone?

It's a Sony Xperia Z

 

[androidtweaker1]

It's a Sony Xperia Z

Which variant of Xperia Z: C6603 or C6602 or C6606 or C6616

 

[kaykaa5]

Which variant of Xperia Z: C6603 or C6602 or C6606 or C6616

Oh, sorry... I actually have no idea. Is there a way to check this without getting the phone one?

 

[androidtweaker1]

Oh, sorry... I actually have no idea. Is there a way to check this without getting the phone one?

The variant is written at the bottom of the phone, check and let me know

 

[kaykaa5]

The variant is written at the bottom of the phone, check and let me know

It's a C6603.

 

[androidtweaker1]

It's a C6603.

.
You can download kitkat stock firmware for 6603 from here
Download flashtool to flash firmware from here

How to flash instructions are given below

Download and install the Flashtool
Go to the flashtool folder in c drive, keep the firmware ie the ftf file in the firmware folder of flashtool
Next go to where you installed flashtool folder in C drive and then to the drivers folder.
Run the Flashtool-drivers.exe file.
Xperia Z drivers, flashmode drivers and fastboot drivers.
Accept all the prompts and once finished load flashtool
Click the thunder button on top left
Now select flashmode
Select the firmware you want to flash
Turn off phone(Hold power and both the volume keys till you feel 3 vibrations)
When it tells you to connect hold down the volume button and connect usb to phone
Flashing will start
After flashing is complete boot the phone

 

[kaykaa5]

.
You can download kitkat stock firmware for 6603 from here
Download flashtool to flash firmware from here

How to flash instructions are given below

Download and install the Flashtool
Go to the flashtool folder in c drive, keep the firmware ie the ftf file in the firmware folder of flashtool
Next go to where you installed flashtool folder in C drive and then to the drivers folder.
Run the Flashtool-drivers.exe file.
Xperia Z drivers, flashmode drivers and fastboot drivers.
Accept all the prompts and once finished load flashtool
Click the thunder button on top left
Now select flashmode
Select the firmware you want to flash
Turn off phone(Hold power and both the volume keys till you feel 3 vibrations)
When it tells you to connect hold down the volume button and connect usb to phone
Flashing will start
After flashing is complete boot the phone

When I unplug the phone it doesn't do anything while powering on. When I connect it on the charger it begins booting with 'Sony' again

 

[androidfreak70]

When I unplug the phone it doesn't do anything while powering on. When I connect it on the charger it begins booting with 'Sony' again

Do the phone vibrate???? Do you get the led (shiny small dote on the right of sony logo!) light??
If the both are NO! so take your phone to service center to replace the battery!!!

 

[Tush21]

M facing d same problem wt my c6602 ,i tried to connect it to pc companion but it seems it doesnt.. Wen i plug usb it only gives a red light once n den nothing... What should i do

 

[phone_wiz]

i have a xperia z pm 0520 keeps rebooting

It's a C6603.

i have a xperia z pm 0520 keeps rebooting an flashing red led on the screen any help with that???

 

[Farahhh]

Hi,

Recently my Sony Xperia Z device is showing some issues. One of them (to start with) is that the battery is dropping really hard from for example 40 percent to 13 percent. The strange thing is that it also goes up from (for example) 43 percent to 50 percent. These issues started when my phone got really warm from lying in the sun for a short period. It also doesn't charge properly when it is on the charger.

Now the real problem is that yesterday my phone got out of battery and it wont start up anymore. When I try to start up by holding the power button I don't get any response from it. When I put it on the charger it keeps restarting/rebooting on the 'Sony' logo. The device keeps doing this without doing anything else.

I've tried to flash the device with the Sony Update Service, without any luck.

I am really out of ideas and I'm hoping that you guys could help me.


Greetings,

Kay.

Hi. I have the same issue. I left my Xperia Z in the sun for a while and well now it just keeps rebooting. Did you ever finda solution to this?

 

[Dkwbsn]

Do the phone vibrate???? Do you get the led (shiny small dote on the right of sony logo!) light??
If the both are NO! so take your phone to service center to replace the battery!!!

I have the same problem, my device get a red light at the top right corner, and it vibrates.
What should I do, if flashing the phone is not working?

 

[androidfreak70]

I have the same problem, my device get a red light at the top right corner, and it vibrates.
What should I do, if flashing the phone is not working?

Maybe get your battery replaced, it's not expensive to do so and it improves the battery life as well since the used batteries get worse overtime.