topic Re: Downgrading firmware without unlocking. in XPERIA archive

Downgrading firmware without unlocking.

vladius — Fri, 08 Nov 2013 19:32:13 GMT

Hello,

1. How can I downgrade the firmware version _without_ unlocking the device?
2. Does it break the warranty if I unlock my phone only to downgrade the firmware?
3. How can I relock the device once it is unlocked? Does Emma have this feature?

Thank you

Re: Downgrading firmware without unlocking.

Uliwooly — Fri, 08 Nov 2013 20:22:54 GMT

Why do you want to downgrade your phone? You can use flashtool, as for the warranty, it could this is how

How to manually update, downgrade, root 2013 Xperias

http://talk.sonymobile.com/thread/124152

Re: Downgrading firmware without unlocking.

Uliwooly — Fri, 08 Nov 2013 20:25:54 GMT

If you unlock the booltoader you will void your warranty and there are more repercussions, your camera no longer work, you will lose your DRM keys and they can't be restored.

Re: Downgrading firmware without unlocking.

vladius — Fri, 08 Nov 2013 20:26:14 GMT

"Why do you want to downgrade your phone?"
To compare camera performance.

I'm looking for the safest and "officialest" way to downgrade firmware without using warranty and unlocking phone (cause, as far as I understand, it will disable the camera, which I need).

Re: Downgrading firmware without unlocking.

Uliwooly — Fri, 08 Nov 2013 20:41:43 GMT

There isn't a way unless you take it to a Sony repair center, they might be able to help you, I don't think its worth it, but the latest update did enhance the camera

Re: Downgrading firmware without unlocking.

PeloQuinones — Wed, 29 Jan 2014 16:05:09 GMT

Why to downgrade? Because overheats, the bluetooth signal is cut off, because it takes more than it gives. So I want to go back to 4.2, at least until 4.4 "kitkat" comes.