Sony 65W850C Android TV in endless bootloop

[andrewc]

Hi

I have a Sony TV, model 65W850C, I didn't update the firmware or messing with the firmware when the fault occurred, it just happened when I turned on the TV the screen was flashing under the option to select what I wanted to watch, HDMI devices, TV or Netflix. I restarted the TV trying to fix it but when the TV rebooted, it was showing the four circles and then reboot endlessly.

I have tried factory reset by pressing power and volume down buttons and plugged in the power, that didn't work.

I read online there were many people having the same issue but there was no solution to it. I wonder whether this is due to the firmware corrupted and whether I can rewrite the firmware to the eeprom? Have anyone tried that or know how to fix this?

Thanks
Andrew

[Davi.p]

Re: Sony Android TV in endless bootloop

the only way i know is to connect it to a pc through serial port and going mad trying to access the famous Android shell, but this depends how are hard the protections made by Sony if there are..

[andrewc]

Re: Sony Android TV in endless bootloop

What is the best way to fix this, is the only option to replace the main board?

[vinceroger69]

Re: Sony Android TV in endless bootloop

What is the best way to fix this, is the only option to replace the main board?

Maybe try calling sony they may provide you with the firmware on a usb stick etc its worth a try nothing to loose.

[Davi.p]

Re: Sony Android TV in endless bootloop

The first method is to learn by Sony or other sources if there is a key combination to let the upgrade to digest or in other sing try all combinations that comes in head, then if it doesn't work mainboard change..

[CapLeaker]

Re: Sony Android TV in endless bootloop

Could very well be that the firmware is corrupted. You could also see if the main board has a place to hook up a TTL. Then you could maybe see why she freaks out. I am guessing due to a kernel panic. The TV should have an EMMC. I don't think the EMMC is faulty, because it still starts the TV. In any of my cases if the EMMC was bad, there was no boot, period.

[alfatv]

Re: Sony Android TV in endless bootloop

I am not familiar with this model, but typically you can download firmware from Sony, copy it to USB, plug USB into TV, then force firmware upgrade. You can google for more details and watch youtube videos.

[andrewc]

Re: Sony Android TV in endless bootloop

I am not familiar with this model, but typically you can download firmware from Sony, copy it to USB, plug USB into TV, then force firmware upgrade. You can google for more details and watch youtube videos.

I have tried to hook up a usb key with the firmware, press the power and volume down buttons and then turn on the power, but the tv didn't boot far enough to be able to load the usb.

[Davi.p]

Re: Sony Android TV in endless bootloop

There's a discussion driven to top recently where the user brucetv have solved with a procedure..

[andrewc]

Re: Sony Android TV in endless bootloop

There's a discussion driven to top recently where the user brucetv have solved with a procedure..

I tried finding the thread you are talking about but couldn't find it under Brucetv posts or any posts he commented. Do you have the link?

[vinceroger69]

Re: Sony Android TV in endless bootloop

I tried finding the thread you are talking about but couldn't find it under Brucetv posts or any posts he commented. Do you have the link?

Post 13 in this thread https://www.badcaps.net/forum/showth...+tv+usb+update

[andrewc]

Re: Sony Android TV in endless bootloop

Post 13 in this thread https://www.badcaps.net/forum/showth...+tv+usb+update

Tried that, I got green light, and then it keeps reboots, sometimes after seeing the 4 animation circles, sometimes just black screen.

[Davi.p]

Re: Sony Android TV in endless bootloop

Just to clarify, recently you've done a sw update? This is maybe why it doesn't accept it..

[andrewc]

Re: Sony Android TV in endless bootloop

Just to clarify, recently you've done a sw update? This is maybe why it doesn't accept it..

No software or firmware update has been done. It just happened when I turned in the TV oneday.

[Davi.p]

Re: Sony 65W850C Android TV in endless bootloop

I was asking if the SW version is already the last..

[andrewc]

Re: Sony 65W850C Android TV in endless bootloop

I don't know, I never checked

[andrewc]

Re: Sony 65W850C Android TV in endless bootloop

I was asking if the SW version is already the last..

I don't know, I never checked.

[Davi.p]

Re: Sony 65W850C Android TV in endless bootloop

if you take notice of the actual upgrade version maybe with the next version the method will work, unless you haven't found a new board.

[andrewc]

Re: Sony 65W850C Android TV in endless bootloop

Any other idea? So far I still have no luck getting it to work.

[Davi.p]

Re: Sony 65W850C Android TV in endless bootloop

Try to contact Sony to ask methods to restore sw memory, it is possible that Sony would consider some maneuvers of property of his assistance centers , the other solutions the reprogram directly on the flash mrm and system access through pc but are both problematic and not for novice users..