Database Develop

[Q] Reverting from CM

Hi,
I have the latest stable CM installed on my XZ, but I miss the Sony ROM, so I thought I'd revert back, though I'm a little unsure about how to so it. Before unlocking the boot loader and installing CM, I rooted the phone and made a backup. My question is;
Can I revert back by doing this:
1. Booting into flashmode, wiping the cache
2. Choose to reinstall my back-up file
3. Relock boot loader in flashtool (if necessary, it was locked when I backed up)
4. "Repair phone" in Sony update service
And then be back to how it was before?

Seek and you shall find. Or look at the stickies!
http://forum.xda-developers.com/showthread.php?t=2275632

Thank you!
But that doesn't really answer my question(s), and as they were very specific in nature, a simple "yes" would be sufficient, or a "no"m, accompanied by the aforementioned links. ^^
I'm new at this, so that post has a lot of information... That's why I asked in a separate post.

You can just flash stock rom with flashtool. You don't need to relock unless u backed up your ta partition and you want to have bravia engine and updates.
Sent from my Xperia Z using XDA Premium 4 mobile app.

Thanks, but can I do it the way I wrote above? Because if so, I will.

You can just flash stock rom with flashtool. You don't need to relock unless u backed up your ta partition and you want to have bravia engine and updates.
Sent from my Xperia Z using XDA Premium 4 mobile app.
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I was wondering if it was possible somehow. I backed up the TA-Partition and I defenitly want Bravia Engine back. How should i do this?

Dreiundachzig said:
You can just flash stock rom with flashtool. You don't need to relock unless u backed up your ta partition and you want to have bravia engine and updates.
Sent from my Xperia Z using XDA Premium 4 mobile app.
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Since it's so hard to get a reply regarding my original post, I'll ask it like this;
Can I flash an official sony rom (.ftf) over my CM10.2? If so, can I just relock the bootloader through flashtool as well to get back BE2?

The key to get BE 2 working again and have fully restored DRM keys is to restore the backup of the TA partition that you should have taken before unlocking the bootloader. Flashing stock FTF and just relocking bootloader won't do the job
Neither will a CWM restore.
Sent from my C6603 using xda app-developers app

I made the backup in cwm before I unlocked the bootloader, is that not usable to get it back? Is there any other way?

Unfortunately, CWM doesn't backup Trim Area (TA).In your case it seems Sony DRM keys are lost forever :thumbdown:
Sent from my C6603 using xda app-developers app

I see. Oh well. BTW, I unlocked the boot loader once before, but then I relocked it without making any changes. Did I lose BE then, or not before I installed CM? And what other than BE will I have lost? :/

roanmy said:
I see. Oh well. BTW, I unlocked the boot loader once before, but then I relocked it without making any changes. Did I lose BE then, or not before I installed CM? And what other than BE will I have lost? :/
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Click to collapse
Yes you loosed it. If you unlock you booloader you loose the keys. That is the reason why you have to make a TA backup before unlocking.
Your warranty you loose also but I think you should know that

[Q] Unlocked Bootloader, Unrooted OTA Update?

Heyy guys I have a XperiaSP which have unlocked bootloader and unrooted phone (just unrooted it a while ago). I would REALLY like to update my phone because there's too many bug here on Xperia SP. However, when the phone was still rooted I tried to update and it failed. Now after unroot I was going to update but then the fact that I unlocked the bootloader I am really worried about wiping/bricking the phone through OTA update. Any help pls?
P.S - My phone is barely Unlocked. It is nearly as stock and no custom recovery nor root is installed.:laugh:
Edit : By the way, is the Xperia SP really got Wi-Fi issues? My iPod got full signal on home's wifi and my SP got barely 1-2..

hmmm
dhisonnn said:
Heyy guys I have a XperiaSP which have unlocked bootloader and unrooted phone (just unrooted it a while ago). I would REALLY like to update my phone because there's too many bug here on Xperia SP. However, when the phone was still rooted I tried to update and it failed. Now after unroot I was going to update but then the fact that I unlocked the bootloader I am really worried about wiping/bricking the phone through OTA update. Any help pls?
P.S - My phone is barely Unlocked. It is nearly as stock and no custom recovery nor root is installed.:laugh:
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Click to collapse
did u try using PC companion? Is It ok there?
Or else I think you know that Sony's 4.3 update is on the corner. that may will solve your issue

madhukarmohan said:
did u try using PC companion? Is It ok there?
Or else I think you know that Sony's 4.3 update is on the corner. that may will solve your issue
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Ahh yeah gonna try that ASAP. but I just forgot to mention that my primary laptop is now on service center (Got a bit problem there) so I can't really update my SP through that.
I tried updating just now through OTA. After the reboot a popup message appeared :
"Could not install new software version. Try again."
Is that because of my unlocked bootloader? Cos I unrooted my phone completely through SuperSU.
If so how to relock the bootloader??

If you want to relock the bootloader just use FlashTool. In your case because you don't have any custom Firmware on your phone this should be quite easy.
But I always thought when updating with having root access you can update but lose root. Maybe it didn't work (the update) because of a complete diffenent reason. Did you try it a second time?
Sent from my C5303 using xda app-developers app

Schokonuss said:
If you want to relock the bootloader just use FlashTool. In your case because you don't have any custom Firmware on your phone this should be quite easy.
But I always thought when updating with having root access you can update but lose root. Maybe it didn't work (the update) because of a complete diffenent reason. Did you try it a second time?
Sent from my C5303 using xda app-developers app
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When I got my laptop back, I'm definitely going to relock the bootloader. But if I do something wrong, will it hard brick or something? (sorry for my parranoidness) and relocking is not much difference from unlocking right?
I tried installing the software update the second time. Unlocked BL, fully unrooted (No Super SU). Still fails gonna try at PCCompanion

dhisonnn said:
When I got my laptop back, I'm definitely going to relock the bootloader. But if I do something wrong, will it hard brick or something? (sorry for my parranoidness) and relocking is not much difference from unlocking right?
I tried installing the software update the second time. Unlocked BL, fully unrooted (No Super SU). Still fails gonna try at PCCompanion
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You should flash stock ROM using flashtool, relock the bootloader, and then restore the TA partition
Sent from My XSP

Pulsa said:
You should flash stock ROM using flashtool, relock the bootloader, and then restore the TA partition
Sent from My XSP
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Click to collapse
I'm on my stock ROM now (Default Sony ROM right? But I've updated it before, does it count as stock?)
What's TA partition?
Sorry for noob Qs

I never do this before.So can I update my phone via pc companion via unlocked bootloader?On stock rom without root and recovery?
Sent from my C5303 using xda app-developers app

If you didn't flash anything on your device you can relock your bootloader without any problems. If you had a custom recovery, kernel or ROM and you relock your bootloader while having this custom recovery, kernel or ROM this should brick your phone (I think this could even be a hard brick) but if everything is stock (like I already said) there shouldn't be any problems with relocking
TA partition contains the working bravia engine (2) which gets lost if you unlock bootloader. If you had made a backup of the TA partition you could restore this and get the bravia engine back
Sent from my C5303 using xda app-developers app

Schokonuss said:
If you didn't flash anything on your device you can relock your bootloader without any problems. If you had a custom recovery, kernel or ROM and you relock your bootloader while having this custom recovery, kernel or ROM this should brick your phone (I think this could even be a hard brick) but if everything is stock (like I already said) there shouldn't be any problems with relocking
TA partition contains the working bravia engine (2) which gets lost if you unlock bootloader. If you had made a backup of the TA partition you could restore this and get the bravia engine back
Sent from my C5303 using xda app-developers app
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if i didnt make backup (because no one told me to ) i cant install 4.3 update from Sony if comes out ?

Yes, you'll be able to get the 4.3 update without the TA partition. But, as everyone else here said, make sure you're on a stock ROM, with a locked bootloader.

Locked bootloader ----> You can use PC Companion or Flashtool to update your phone
Unlocked bootloader ------> Flashtool only
Also, don't try to update your phone via OTA while having your bootlader unlocked, because it will brick your device.

Schokonuss said:
If you didn't flash anything on your device you can relock your bootloader without any problems. If you had a custom recovery, kernel or ROM and you relock your bootloader while having this custom recovery, kernel or ROM this should brick your phone (I think this could even be a hard brick) but if everything is stock (like I already said) there shouldn't be any problems with relocking
TA partition contains the working bravia engine (2) which gets lost if you unlock bootloader. If you had made a backup of the TA partition you could restore this and get the bravia engine back
Sent from my C5303 using xda app-developers app
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Click to collapse
My original Stock Rom had been flashed to CM 10, but now I have flashed it back to stock rom that I tried to search online from this site. Is it counted as original stock rom or not? My phone is unlocked bootloader, and I got ota update but cannot install, I don't know why; maybe it has been changed or maybe of unlock bootloader?

Unlock bootloader 4.3 290

Hey guys is it safe to unlock the bootloader running 4.3 build #290
I dont quite understand the TA backup
Its my first time to own a non nexus device so im a little scared to unlock my bootloader with other things to do
Anyhelp will be much appreciated! Thank you!
Sent from my C6903 using xda app-developers app

You need to backup your ta partition for warranty reason and some xperia features to work.
First root your device then backup your ta-partition and then you can safely unlock your bootloader.
To root your device Out most likely have to downgrade your firmware, then root, then backup and then you can go ahead and unlock your bootloader with the latest version of flashtool
Gesendet von meinem C6903 mit Tapatalk

whisper13 said:
Hey guys is it safe to unlock the bootloader running 4.3 build #290
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Click to collapse
Yes.
whisper13 said:
I dont quite understand the TA backup
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If you don't backup TA and DRM keys and you Unlock Bootlader you will never Relock your bootlader again, you will lost warranty forever and features like X-Reality, Bionz Processing and Bravia Engine.
whisper13 said:
Its my first time to own a non nexus device so im a little scared to unlock my bootloader with other things to do
Click to expand...
Click to collapse
Don't be, I remind you that Unlock Bootlader is necessary if you want to flash Custom Roms with Custom Kernels Only, if you will not do that, you easily can Root, Install Recovery and Custom Roms on Locked Bootlader.

Hi guys thanks for the quick response imma try the thing without unlocking thw bootloader and installing dual recovery
Sent from my C6903 using xda app-developers app

Unlocking bootloader allowed, why not root?

If sony is completely fine with us unlocking hte bootloader, as shown here: http://unlockbootloader.sonymobile.com/unlocking-boot-loader
Why did they make it so difficult to root the device?

Supish said:
If sony is completely fine with us unlocking hte bootloader, as shown here: http://unlockbootloader.sonymobile.com/unlocking-boot-loader
Why did they make it so difficult to root the device?
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Click to collapse
If you can unlock the bootloader it is a very easy 2 second job to root.

But id have to downgrade my firmware. And my data would be erased. Seems so needless
Sent from my C6906 using XDA Premium 4 mobile app

Supish said:
But id have to downgrade my firmware. And my data would be erased. Seems so needless
Sent from my C6906 using XDA Premium 4 mobile app
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That's only to back up TA upgrading with root from 4.2.2 is to 4.3 or 4.4 is not supported.
Upgrade to stock then unlock
Also I think losing all data is a sacrifice worth it besidesvyou can back up data Sony provides you with the tools or just copy SD card to desktop and restore when done.
OOORRRRRRRR.....
You can get pre-rooted firmware here http://forum.xda-developers.com/showthread.php?t=2711982
Backup TA and unlock(if you want but I'm getting the sense that you just want root)
The last option is the preferred one no downgrade pain nonsense.
And finally to answer your Question: Sony is gonna Sony they say they don't mind you unlocking boot loader but the remove the good stuff like BIONZ. Now just imagine with root in which they never claimed to not mind about.
yup owns Z1 and stuff.

RealiableCandy4 said:
That's only to back up TA upgrading with root from 4.2.2 is to 4.3 or 4.4 is not supported.
Upgrade to stock then unlock
Also I think losing all data is a sacrifice worth it besidesvyou can back up data Sony provides you with the tools or just copy SD card to desktop and restore when done.
OOORRRRRRRR.....
You can get pre-rooted firmware here http://forum.xda-developers.com/showthread.php?t=2711982
Backup TA and unlock(if you want but I'm getting the sense that you just want root)
The last option is the preferred one no downgrade pain nonsense.
And finally to answer your Question: Sony is gonna Sony they say they don't mind you unlocking boot loader but the remove the good stuff like BIONZ. Now just imagine with root in which they never claimed to not mind about.
yup owns Z1 and stuff.
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Ive checked my phone on *#*#SERVICE#*#* and it says bootloader unlock allowed: no. What do you recommend I do?

Supish said:
Ive checked my phone on *#*#SERVICE#*#* and it says bootloader unlock allowed: no. What do you recommend I do?
Click to expand...
Click to collapse
As for unlocking bootloader there's no hope. But you can still get root by flashing pre-rooted firmware in the link I provided in previous post. Just follow the locked bootloader instructions.
yup owns Z1 and stuff. Also if I've helped you don't forget to hit THANKS - actions speak louder that words.

I did not thought that the first question of the OP was to root the phone ....

Some [Q] about Bootloader Unlock [Xperia T]

So I want to unlock my phone Bootloader and install a fresh AOSP 4.4
Mine current android version is 4.3 Jellybean ( 9.2.A.1.199) and on the sony bootloader unlock site when I insert the dial number it says "Root status ...... Allowed "
I rooted it today ( havent installed recovery buy I can do it later)
My questions :
Can my phone brick while trying to unlock the bootloader?
Do I need to download the latest version or the 4.1 version of android ?
All this I'm doing 'cus my 1 year warrantly has ended today so Why not ? :good:

Don't think the bootloader unlock procedure has much risk of bricking your phone... especially if you use the official Sony Bootloader Unlock method. But you may want to read up on backing up your TA before unlocking the bootloader.

LaZiODROID said:
Don't think the bootloader unlock procedure has much risk of bricking your phone... especially if you use the official Sony Bootloader Unlock method. But you may want to read up on backing up your TA before unlocking the bootloader.
Click to expand...
Click to collapse
Can you help me a bit I'm like new to Xperia T developer world ( I have some skills from Xperia X8 but that is like a another world)

CS Fan 991 said:
Can you help me a bit I'm like new to Xperia T developer world ( I have some skills from Xperia X8 but that is like a another world)
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I'd also suggest backing up your TA first. It's all in here: http://forum.xda-developers.com/showthread.php?t=2292598
If you unlock your bootloader, you lose your Bravia Engine. You can get it back when you lock bootloader, but only if you restore your TA. If you don't have this backup, BE is most likely lost forever.

LaZiODROID said:
Don't think the bootloader unlock procedure has much risk of bricking your phone... especially if you use the official Sony Bootloader Unlock method. But you may want to read up on backing up your TA before unlocking the bootloader.
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Click to collapse
ArtDC said:
I'd also suggest backing up your TA first. It's all in here: http://forum.xda-developers.com/showthread.php?t=2292598
If you unlock your bootloader, you lose your Bravia Engine. You can get it back when you lock bootloader, but only if you restore your TA. If you don't have this backup, BE is most likely lost forever.
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I've done backing up my TA keys ( done the dry restore to make sure )
So Now I only need to unlock my bootloader ?
Still one question :
Can I use my current version of android 4.3
EDIT : Unlocked the bootloader , put rom , gapps , wipped WORKING AS A CHARM
Thanks for the help !
And if I would like to restore to stock do I need to relock the bootloader ?

CS Fan 991 said:
Thanks for the help !
And if I would like to restore to stock do I need to relock the bootloader ?
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Click to collapse
Nice!
If you want to get your phone back to stock, just flash a stock FTF. Flashtool does not require the bootloader to be relocked for that.
Unless you mean "stock" for warranty purposes, or selling the phone... then I guess I'd say yes to relocking the bootloader, after flashing a stock FTF (and also restoring the TA, of course)

Thanks 4 The Info )))