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Please read this if you considering unlocking the boot loader or rooting your phone.

Important information

Please note that you may void the warranty of your phone and/or any warranty from your operator if you unlock the boot loader. You should only unlock the boot loader of your phone if you are an advanced user with good knowledge of the technology and risks involved.

For more information go here http://unlockbootloader.sonymobile.com/

Please also note

The Sony Xperia support team will not be able provide any support, related to unlocking the boot loader or rooting your phone.

We also recommend you to read the below blogposts.

http://developer.sonymobile.com/wp/2011/03/29/unlocking-the-boot-loader-in-the-new-xperia%e2%84%a2-smartphones/

http://developer.sonymobile.com/wp/2011/04/14/option-to-unlock-the-boot-loader-now-available-for-advanced-developers/

http://developer.sonymobile.com/wp/2011/09/28/sony-ericsson-supports-independent-developers/

Best regards
Sony Xperia support team

How to downgrade from oreo

Adept
Message 11 of 43
7,542 Views
Message 11 of 43

How to downgrade from oreo

Please help 

Emperor
Message 12 of 43
7,537 Views
Message 12 of 43

Re: How to downgrade from oreo

@mel22

 

You will have to use flashtool or xperifirm, why do you want to downgrade?




"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)

Regular
Message 13 of 43
7,502 Views
Message 13 of 43

Re: How to downgrade from oreo

I want downgrade too. Oreo on XZs does not stay connected to my apartment wifi (TP-Link) and I cannot change the router as it is built in with the accommodation.

The process is :

Root phone

InstallIFlashtool to PC 

Use XperiForm to download the ftf

Connect phone and Flash ROM

Adept
Message 14 of 43
7,481 Views
Message 14 of 43

Re: How to downgrade from oreo

Oreo update it's terrible very laggy and my phone drain the battery very fast too ,I'm very disappointed Sony make terrible updates ,everything became worst with the update ,I hate Oreo 

Talent
Message 15 of 43
7,427 Views
Message 15 of 43

How do i downgrade from Oreo to Nougat again?

Please anyone knows how do i downgrade my Operating system OREO to go back to Nougat OS again? Because i really don't like this latest OS. I facing a lot of bug. And the battery battery life is quicker than before. Please helped me what should i do???😫😫😟🙏

Emperor
Message 16 of 43
7,422 Views
Message 16 of 43

Re: How do i downgrade from Oreo to Nougat again?

@nacionmclen

 

you can use either Xperifirm or flashtool, but before you do that, reinstall Oreo and report back 




"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)

Talent
Message 17 of 43
7,420 Views
Message 17 of 43

Re: How do i downgrade from Oreo to Nougat again?

Hello,  where can get that thing?  And how do i reinstall Oreo to report back? Sorry im noob on this thing i have no idea what should i do step by step. 🙁☹️

Emperor
Message 18 of 43
7,419 Views
Message 18 of 43

Re: How do i downgrade from Oreo to Nougat again?

@nacionmclen

 

Here you go 

 

Xperia Companion (XC)

 

 

Software Repair Guide

 

 

Alternatives on How to backup Xperias

 

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




"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)

Talent
Message 19 of 43
7,414 Views
Message 19 of 43

Re: How do i downgrade from Oreo to Nougat again?

Hello i already done that thing. I already software repair my xz in sony pc companion. And nothing changed all want to do i want to go back to NOUGAT operating system? I dont like this OREO os.😣

Highlighted
Emperor
Message 20 of 43
7,407 Views
Message 20 of 43

Re: How do i downgrade from Oreo to Nougat again?

@nacionmclen

 

Take a look at this

 

https://talk.sonymobile.com/t5/Xperia-Z2/How-to-manually-update-downgrade-root-2014-Xperias/td-p/593...




"I'd rather be hated for who I am, than loved for who I am not." Kurt Cobain (1967-1994)