[Q] TA Partition and root

No headache, at the current time there's no root workaround. It's a catch 22 scenario you can't do 1 step without screwing up the next 1.

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nocomp said:

Hi @SwiftSmoke so it means you can t root z1 or z2?

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The whole deal is a bit confusing, yes

The so called TA partition holds your DRM keys which give you access to DRM content. These are unique for each phone and a restore of the TA partition from a different phone would permanently brick your phone. If you restore your own TA partition however, the phone is locked again and your completely back to stock again, Sony won't be able to see that you've rooted it.

Now, in order to backup the TA partition, you need to have root access. In the past this was accomplished by an exploit, which gave you root access without wiping the TA partition. Therefore you could get root access, backup TA, flash a custom recovery, flash a custom ROM and if need be, flash your phone back to stock completely.

Hope that made things a bit clearer.

nocomp said:

I just need to have root in the safest way once i have my z2, is the exploit still up?

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There is no exploit for the Z2 (yet) and no guarantee that there ever will be one. Right now, your only choice is to use this recovery which will wipe your TA partition permanently.

http://xdaforums.com/showthread.php?t=2702001

Is it possible to downgrade the android OS to 4.2 or 4.3, root it and get back to the latest version?

There may or may not be an exploit but if there is, according to what i know is that still your bootloader status should be either unloocked or unlockable. If the status is unlockable or unlock allowed no then there is nothing you can do.... Is this correct?

For instance if my bootloader is locked cuz most carrier locked phones on contracts come with a locked bootloader, if i get my phone unlocked will my bootloader status change? If not is there a way to boot such a phone.

I have a few questions on this

1. Is there a way to know if ure buying a phone with unlocked or locked bootloader ( obviously i cant open all boxes and check one by one by the command) ?

2. If the carrier locked phone have locked bootloaders and vice versa what if we unlock a carrier locked phone will the status change then?

3. Have anyone using previous xperia models with a locked bootloader been able to root so far?

Havent got one yet but as much as I am looking forward to get one these are all ofsetters.

Sathron said:

Is it possible to downgrade the android OS to 4.2 or 4.3, root it and get back to the latest version?

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There is no Andoid 4.2 or 4.3 to downgrade to.
The Z2 begins with 4.4 so there is no older version...

RRSoftware said:

There is no Andoid 4.2 or 4.3 to downgrade to.
The Z2 begins with 4.4 so there is no older version...

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Ah, I see... Sorry for the obvious question, didn't know that's how it works ;_;