Reboot with red led

[Aldred82]

Hi all

I brought my z5c on dicember with 5.1.1 stock, never have a problem since i updated to marshmellow 1 month ago, now even after the second update released for bugfix (!?), i have random reboot where the led flash red 4-5 times.... it's a problem of this version of marshmerllow??

thanks

[Uliwooly]

@Aldred82

Your phone it's out of battery, connect the phone to a wall charger > press and hold power & volume up for 10 seconds > let it charge for 2-3 hours. 

[Aldred82]

mmmm the last time telephone rebooted it was at 70% of battery!

[Uliwooly]

@Aldred82

Just try it 

[chandre16]

@Alred82

I have exactly the same issue.  I get a reboot on average once a day, much more if the phone is working hard (eg navigation).

Nobody seems to have a solution, although I have not yet had formal contact with support.  I have the latest update to Marshmallow, and have tried a software repair.

@uliwooly

Thanks for your suggestion, but it's not associated with low battery, and in fact happens often when the charge is high and connected to a power supply (eg when driving).

[Aldred82]

i can try, but when happen the problem the phone freeze for few seconds...and then reboot.... so i think is not connected with low battery or a battery problem...

there is a (safe) way to return to 5.1.1 ?

[Uliwooly]

@Aldred82

Contact your Local support but you should repair the phone with PCC to narrow down the issue.

PC Companion (PCC)

Bridge (for Mac)

Xperia Companion (XC)

Software Repair Guide

Alternatives on How to backup Xperias

http://talk.sonymobile.com/thread/36355

[Aldred82]

Thank you i will try

but what the repair do in detail? Only a factory reset?

[Uliwooly]

@Aldred82

Factory reset it's not the same as repairing the phone with PCC as the later will reinstall android.

[Sensination]

I'm having the same problems. Oddily enough 90% of the time when I watch YouTube 1080p clips for longer than 7 minutes. Anybody experienced the same problem with YouTube? It did happen once before while just browsing the internet using Chrome as well.