Database Develop

efs folder

Hi all,
Just trying to find out where the efs folder is on xperia z c6602. I used root explorer but do not see it. I just want to make a back up of it. Thanks

This is a folder created by the rooting method. At the end it is deleted automatically. You don't need it.
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Dreiundachzig said:
This is a folder created by the rooting method. At the end it is deleted automatically. You don't need it.
Sent from my Xperia Z using XDA premium.
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So I don't have to worry about losing my imei number flashing roms?

That info is contained in the TA partition. For a backup go here http://forum.xda-developers.com/showthread.php?p=41763438
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shoey63 said:
That info is contained in the TA partition. For a backup go here http://forum.xda-developers.com/showthread.php?p=41763438
Sent from my C6603 using xda app-developers app
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So just to be clear, I already did a back up of my ta partition so my era folder/imei number is saved? If any problems,just do a restore of my ta partition?

Yes your vital information is now safe. If you performed TA back up before unlocking bootloader your DRM keys (needed for Bravia engine) are also backed up. So you can now unlock bootloader and flash ROMs, safe in the knowledge that you can go back to stock and restore TA (which will also relock bootloader), so it will be as it was originally.
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shoey63 said:
Yes your vital information is now safe. If you performed TA back up before unlocking bootloader your DRM keys (needed for Bravia engine) are also backed up. So you can now unlock bootloader and flash ROMs, safe in the knowledge that you can go back to stock and restore TA (which will also relock bootloader), so it will be as it was originally.
I'mSent from my C6603 using xda app-developers app
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Thanks. I just wanted to be sure cuz I flashed a Rom on my gsm nexus s and lost my imei number. Don't want that problem again.

[Q] Relocking Bootloader on Stock Rom with TA Restore

Hi guys
I'm pretty new to the XZ and just wanted to clarify something before I go ahead and flash a ROM.
I have backed up my TA Partition using TA-Backup Tool and have rooted my device.
I am about to install Recovery and Unlock the bootloader, all pretty straight forward from what I've read so far :laugh:
My only question so far is, if / when I want to relock the bootloader can I simply do this using the "restore" option within TA-Backup Tool (providing I am on a Stock ROM), or do I need to Relock using Flashtool and then restore the TA partition?
Thanks
G

Just use ta backup to relock that will flash the ta partition you have backed up to a unlocked status with drm keys
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Maddhouse said:
Just use ta backup to relock that will flash the ta partition you have backed up to a unlocked status with drm keys
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Brilliant!! I'm assuming I can still do this even if the stock ROM has a Recovery such as CWM on it?

Yes but you need to remember what state you backed your phone's ta up with otherwise m5 key won't match
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xperia z
Maddhouse said:
Yes but you need to remember what state you backed your phone's ta up with otherwise m5 key won't match
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hello what is a m5 key also im wondering how to get back to stock as i have unlocked bootloader on cyanogenmod 11 but i do wish to go back to stock only if the bravia engine and all features work. i have backed up my drm keys just need to figure out how do i restore and what process cant find anything on it
thanks

[Q] Anyway to Unlock Bootloader and keep all data?

Hey all, I am having an Xperia Z C6603. Wondering if there is anyway of unlocking the bootloader and keeping all the data I currently have.
I have already rooted my phone and installed TWRP. Still using stock ROM
Any help or advice is appreciated.
Thank you.

Follow sonys unlock guide where you get you unlock code from using the command prompt way, just remember to take ta backup
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First time you unlock, no. It is not posible to keep your DATA partition.
Subsequents tries using flashtools, it will not erase anything.
So the solution is to make a NANDROID backup, unlock the bootloader, and then restore back
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[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.
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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.
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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.
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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:
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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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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

Relock help

Hello. I bricked my devices while installing 4.3 fw (not official way) and than repaired using official Sony tool. It gave me 4.3 fw and I unlocked bootloader to install root and CWM. Now when I try to relock bl phone doesn't boot, works only with unlocked bl. How to relock device to restore TA partition from backup. Please provide step by step
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