yashsingh1/xdaforums huggingface dataset:
[Xperia Z1 General] redback_rsa:
Downgrade and use of the many rooting tools, see first post. Yes, you will get OTA when you have root but if you upgrade to 4.3 you will lose full root (system won't be accessible).
[Xperia Z1 General] hypergamer1231:
And all this can be done without unlocking the bootloader so i wont break bionz and other stuff right????
[Xperia Z1 General] redback_rsa:
Yes, it's currently working fine on mine.

Unlocking after updating to 4.3 won't break camera like it does on 4.2, Sony fixed that.
[Xperia Z1 General] hypergamer1231:
Thanks a ton so i will downgrade backup ta install recovery and install a custom rom later if needed i can restore. Ta and i.will have a complete stock device right..... After unlocking bl do you feel or miss bionz or bravia or anything
[Xperia Z1 General] omegahanggara:
Well it's a logic play. The facts are :

1. You are using .136 now that's why DoomKernel won't work (Currently there's no DoomKernel works on .136)

2. You have unlocked bootloader now, that's why you can't unlock your bootloader (again), it's kinda unlocking an already unlocked door.

Anyway, just flash .136 ftf again. You can untick wipe data, and your baby will work again. If you won't flash ftf, just repair it using Sony PC Companion.
[Xperia Z1 General] colors:
1, Doomkernel says it will work with .136, atleast v07 that i downloaded...

2. You missunderstod me, i ment when i relocked my bootloader to update thrue sonys software the unlocking after update failed. I got 0.5 in fastboot.exe getvar version commando. But when i typed my unlock key it first said failed, second attempt "you already rooted" third attempt, failed.. so i couldnt do it
[Xperia Z1 General] bossie1975:
Question:

I want to add Root to my Z1. I am currently on .290 firmware with locked bootloader. I have allready obtained the unlock code from Sony, but I am a bit worried. If I want to unlock I read that I have to do a TA backupfirst , but I need Root to do so. So, I thought okay first obtain Root and then TA and then unlock the Bootloader, but in the OP of this thread it says I need an unlocked bootlader to be able to root... :confused:

So I am in some kind of loop here. Anyone any idea or am I missing somthing:confused::confused::confused:
[Xperia Z1 General] Kyrius:
You don't need to unlock the bootloader. To get root you have to downgrade. Check http://xdaforums.com/showthread.php?t=2572988
[Xperia Z1 General] bossie1975:
Thanks! But that thread is named: "Update to 14.2.A.0.290 "and requires root to do so...but I am already on .290. So next question how do I downgrade?
[Xperia Z1 General] Kyrius:
Sorry. You have to flash 14.1.G.1.534 via flashtool, than root and later follow before mentioned thread to get back to 290
[Xperia Z1 General] bossie1975:
Thanx. Not sure if we are on the same page here... I am based in the netherlands and am not sure if we are running the same firmware region...But if I understand correct. I have to downgrade(to 14.1.G.1.534 ) than root and upgrade back to .290? And I will not loose root? and than I can do the TA backup and unlock the bootloader (in order to flash Omnirom)?

edit: And where can I find the ftf file for 14.1.G.1.534 ?
[Xperia Z1 General] Kyrius:
Flash central europe version. There shouldn't be any problems. The only thing you have to make sure is which version of Z1 you have. FW meant for 6902 will only work on 6902, FW meant for 6903 will only work in 6903 and so on. After you root 534 follow steps in http://xdaforums.com/showthread.php?t=2572988 to get back to rooted 290.
[Xperia Z1 General] bossie1975:
Thanx! Gonna give it a try!
[Xperia Z1 General] tragedyhk:
I have just lost TA with a accident. I have made a full backup somehow it was stored in internal storage. I wiped the internal storage on order to a new ROM.

Is it possible to recover TA using others backup??:rolleyes:
[Xperia Z1 General] Kyrius:
You can only use your own TA backup.
[Xperia Z1 General] tragedyhk:
Thx for quick response.

Does it mean there is no way for me to recover TA?? I now realize that X-reality seems to be not working. Although its not a big deal, I am afraid I might lose some other function bcoz of losing TA
[Xperia Z1 General] Kyrius:
well if you don't have a copy anywhere else, then there is nothing you can do now. Using a TA backup from another phone will hardbrick yours so don't do that.

EDIT: first backup should be in the TA backup tool folder on you PC. Have you deleted that?
[Xperia Z1 General] tragedyhk:
I didnt make a backup of TA on the computer at all. I thot it'd be fine unless I unlock bootloader.

Anyway, thank you very much!
[Xperia Z1 General] riki_22:
Root for 14.2.A.1.136 << Z1 without ta backup

hi, sorry for my bad english, i have a sony z1 C6903 with 14.2.A.1.136 and i would install the monxrom, but i have a difficult.

i try a downgrade to 14.1.G.1.534 but the sim not working after; For root my sony z1 with 14.2.A.1.136 i must have the bootloader unlocked, but i can not save TA partion and the DRM KEYS without root, essentialy to continue unlocking bootloader. :confused::confused::confused::confused:

I wanted to add that after the downgrade the imei code is 000000000 but, if i restoration with seus the imei come back original.

After i try the downgrade with unchecked basebend and TA but the imei change in 00000000000.

maybe something wrong in the downgrade?????

can someone help me?
[Xperia Z1 General] GeramanX:
Hi, Im new here but I can help you with this.

I had the same problem, no imei, also you probably will not have signal.

I got it fixed by flashing 534, then 290 root to 136 root and went back to normal(imei etc).

Good luck!

---------- Post added at 01:18 PM ---------- Previous post was at 01:14 PM ----------

I read somewhere it has to be in that order to get the imei issue fixed and it worked for me.
[Xperia Z1 General] riki_22:
Hi i'm solved flashed The 538 by nut And The downgrade is ok :) And after root And Now i have installed The moonfixrom :) :)

Inviato dal mio C6903 usando XDA Premium HD app
[Xperia Z1 General] nxkr:
SD Card will be wiped meaning External SD card or phone memory ?

and one last thing what if i got ahead of them and removed my External SD card nothing will be wiped i guess ?

am about to unlock my BL but before that im going to Backup TA just in case
[Xperia Z1 General] mikailmohammed:
I downgraded my phone to .534 and i used vroot and now i dont have an iemi no to unlock bootloader. Can someone help me?
[Xperia Z1 General] timberwolf60:
I used nut 534.ftf from this thread: http://xdaforums.com/showthread.php?t=2572988

Downgrading to a 4.2 ROM:

Download http://nut.xperia-files.com/?dlid=QzY5MDNfMTQuMS5HLjEuNTM0X1tOVVRdLmZ0Zg==

Send from my C6903 using TapatalkPro

my Sg device: Z1 rooted136 ROM by NUT with 2.7.86 dualrecovery, mod by GavityBox 2.9.6. Samsung S2 standby for Z1 when Z1 no power.
[Xperia Z1 General] thelast3lack:
Is there any tool to root this phone on Linux?

My firmware is 14.2.A.0.290, if it matters.

And device model is C6903.

BTW, what's the difference between different models?
[Xperia Z1 General] redback_rsa:
No tools for 290, you'll have to root the phone using NUT's Rom.

http://xdaforums.com/showthread.php?t=2628185

For device differences..

http://www.gsmarena.com/sony_xperia_z1-5596.php
[Xperia Z1 General] andyjrobinson:
Hi.

I have been having problems trying to unlock the boot loader on my Z1.

I followed the instructions provided by Sony to unlock. I had previously unlocked and relocked the device.

However now when following instructions again I am given the following errors:

FAILED (remote: Command did not succeed)

And after this,

FAILED (remote: Device is already rooted)

Even though it is not and service menu says,

Boot Loader Unlock Allowed: Yes

Any help is appreciated.

Thanks.
[Xperia Z1 General] f_u_006:
The easiest and safest way to unlock bootloader is to download Flashtool and unlock using Flashtool, i did the same.

check this out****** The link is located in this thread.

xdaforums.com/showthread.php?t=2335555

Hit thanks if this helped you.
[Xperia Z1 General] Oliviakrk:
Hi

Whats the way to root 14.2.A.1.136?
[Xperia Z1 General] andyjrobinson:
Tried this already gives the same message
[Xperia Z1 General] f_u_006:
Then there's a problem with your firmware or root!

Flash a new firmware, root it and then unlock your bootloader.

---------- Post added at 05:13 PM ---------- Previous post was at 05:07 PM ----------

Unlocking your BL will erase everything in your Internal and external memory.

And its extremely important to take a backup of your drm keys.

once lost, then forever lost. lol
[Xperia Z1 General] andyjrobinson:
Hi,

OK, I am not sure if I am explaining things properly or if some how I forgot to follow one of the steps while unlocking.

But here goes.

I first unlocked a non-branded firmware on my Z1 without having it rooted, following the instructions on the Sony Unlock site.

Then I relocked the bootloader later, using the Sony Mobile Flasher by Androxyde.

Now, when I try and unlock the bootloader using either the Sony instructions of through Flash Tool I get the same message from both.

Phone is now currently using my carrier branded firmware.

Any assistance is appreciated.
[Xperia Z1 General] ahter1981:
Thanks a lot
[Xperia Z1 General] Stealthy Hunter:
My Xperia Z1 (C6903) isnt being rooted at all using the vroot...I am on .290 firmware

it gives me rooting now then shows me X mark that rooting failed although i did the following:

- closed all adb softwares like flashtool , sony pc ....etc

- downloaded flashtool drivers

- of course adb enabled...

whats the problem plz help.......
[Xperia Z1 General] blueether:
read the instructions/threads, then downgrade and root...
[Xperia Z1 General] Myrzik:
Sony Xperia Z1

Hello, i tried all root programs and my phone still have no root. Why its happend? :(
[Xperia Z1 General] :
In all honesty the first posts and guides are outdated unless you are running an old firmware. This is the first thread people come to when looking for rooting information and the relevant up-to-date information is buried deep in the pages. This thread should either be updated or un-stickied to avoid further confusion.
[Xperia Z1 General] krabappel2548:
I updated the guide a little bit and added the part about downgrading before being able to root using a toolkit :)

I'll try to update guide some more, I'm having exams now so not really time for it :p
[Xperia Z1 General] :
Thanks Krab, don't take my comment the wrong way - I just think that because this thread is stickied it gets more attention than other threads and most people who begin their rooting process with the Z1 probably start here and run into problems if the information isn't updated :) Good luck with the exams!
[Xperia Z1 General] Stealthy Hunter:
I downgraded.....the rooted....then >>

IMEI 000000000000

So I flashed back my original ftf FW to fix thix problem

luckily that worked to fix but root was lost

any good way to root without using this stupid root tools(vroot,360rot....)??
[Xperia Z1 General] heahmad:
I have a question

can i use another TA backup, for example my friend TA backup
[Xperia Z1 General] timberwolf60:
No, your phone will bricked.

Send from my C6903 using TapatalkPro

my Sg device: Z1 rooted136 ROM by NUT with 2.7.94 dualrecovery, mod by GavityBox 2.9.7. Samsung S2 standby for Z1 when Z1 no power.
[Xperia Z1 General] omegahanggara:
Yes you can. But your phone can't take it, it will bricked.
[Xperia Z1 General] heahmad:
Oh ok, thank you for the advice, but there is no way to get drm key back
[Xperia Z1 General] omegahanggara:
No. Unless you have TA backup.

Well, I'm not backup my TA back then. I'm not regret anything. This is an adventure of development :)
[Xperia Z1 General] f_u_006:
No dear brother,

You will hardbrick your device!

It doesn't match the drm key stored very very secure at your phone bios.
[Xperia Z1 General] Stealthy Hunter:
every time I flash a stock ftf (but not the same regional customization) the imei turns 000000000000000...

how to fix..??
[Xperia Z1 General] MrSavage:
Guide is a bit outdated.

I used the guide yesterday, and while helpful, it is a bit outdated.

Can one of you guys send a message to krabappel2548 and ask him to update the guide?

(I'm still a forum-noob, so I can't pm him)
[Xperia Z1 General] Udonitron:
Just received my Sony Z1 SOL23.

Can these be rooted etc the same way without issues?

I would assume so...I guess I will lose the IR Blaster and TV functionality however but my SIM gets detected but doesn't want to work.

I have it set to UMTS LTE GSM international mode and it sees the TELUS, BELL, and Rogers towers but just will not connect so rooting etc might be my only option here.
[Xperia Z1 General] f_u_006:
Which firmware version are you using currently?

---------- Post added at 11:02 PM ---------- Previous post was at 10:57 PM ----------

Your phone is network locked!

Seek help from you bought this?
[Xperia Z1 General] MrSavage:
I ended up rooting my 14.1.G.1.534 firmware using vRoot.

(Afterwards I did a few more things, and today I'm using 14.2.A.1.136)
[Xperia Z1 General] f_u_006:
Keeping your root while OTA is not guaranteed!

---------- Post added at 10:18 AM ---------- Previous post was at 10:11 AM ----------

Keeping your root while OTA is not guaranteed!

Backup, Downgrade, Root, install recovery and then flash this prerooted

latest firmware with full root and dual recovery.

Keeping your root while OTA is not guaranteed

xdaforums.com/showthread.php?t=2628185

Hit thanks if this helped you.
[Xperia Z1 General] hypergamer1231:
Have a couple of questions guys please help

When do I restore TA backup

Do I first restore TA and then reloack bootloader using flashtool and then flash the latest .136 on my C6902

If I just relock the bootloader and install .136 from flashtool will the service center still void my warranty

Is there a way to have a locked bootloader and have .136 with a locked bootloader as I just need root for using folder mont

Thank you
[Xperia Z1 General] f_u_006:
Restoring TA will lock the bootloader automatically and your warranty is not void.
[Xperia Z1 General] hypergamer1231:
Thanks for the reply mate but in case the TA restore fails can use relock option in flashtool and after that can I flash .136 ftf. will this process save my warranty if i cannot restore TA
[Xperia Z1 General] f_u_006:
Losing your DRM Key will kill the Track ID, and relocking your bootloader will save the warranty,! cheers#
[Xperia Z1 General] hypergamer1231:
Thats awesome one last query so if i lock the bootloader and not restore TA will xreality bionz and bravia engine work and after locking the bootloader if I just need root is there a way. Thanks for your help!!!!!
[Xperia Z1 General] tsiftsism:
Some questions:

I found out from sonymobile that my brother's z1 can't have unlocked bootloader. Now it has a 14.2.A.1.136 software, so in order to root it (he doesn't care about flashing custom roms, he only wants root access in order to install some apps demands it), i need to downgrade it to 14.1.G.1.534 and then use one of the two root programs.

1) So as soon as i root it, then can i skip Part 2 (Backup TA) and Part 3 (Unlock your bootloader) and stay with the rooted device or i have to perform all the steps, so in my case (can't have unlocked bootloader) i shouldn't try anything?

2) If i can only root the device and skip Part 2 and Part 3, and if i understand what this post is saying

i shouldn't update to a new software because there is no guarantee that the root will remain. Is that right?

Thanks in advance for your answers.
[Xperia Z1 General] MrSavage:
f_u_006, thank you for your time, but if you would read my post again you will realize that I wasn't interested in keeping the root. I knew I would lose it before I begun (I temporarily rooted my phone for another reason).

So, can I ask you to send the private message to Krabappel? It will save other people some time, as the new version of "360 root" will not easily install on non-Chinese versions of Windows.
[Xperia Z1 General] f_u_006:
No, you will never lose it even if you try hard to lose it.

---------- Post added at 09:39 AM ---------- Previous post was at 09:21 AM ----------

There is no app for OTA survival for Android 4.3 yet, But you can only do this in SuperSU Pro version in Survival Mode.

Once you unlocked your bootloader, you will be able to root in any version by installing DoomKernel.

If you have locked bootloader with root, install recovery (CWM or TWRP), Do an OTA and then flash this in your recovery:

https://docs.google.com/file/d/0B-kq_h3_m8QvSkdvWjJ1cTNPR1E/preview
[Xperia Z1 General] coletrickle79:
Ive read through ,most of this, which is best way to root and does any one have any ROM recomendtions
[Xperia Z1 General] f_u_006:
Cyanogenmod, because it have a good support and updates its ROM bug and software very fast.

Go to download.cyanogenmod.org select honami from the list which is the codename for Xperia Z1.

Installing this ROM requires unlocked bootloader.

Hit thanks if this helped you.....
[Xperia Z1 General] algarues:
I followed the guide here and I could downgrade as well as root the phone (vroot method)

the root also remained after i did a firmware upgrade with the sony pc companion software

because i was getting all of these notifications in chinese

I thought that maybe at the level of 4.2.2 the device could be roote also using kingo

So I downgraded once again and rooted the 4.2.2 firmware with kingo, which worked

However in this case the supersu app gets deleted after the firmware update

the problem is that now even if i downgrade and re-root with vroot then the root is disabled after the firmware update

is it known whether the very latest updates can revert root in any case or do I have to apply any additional fixes?

thanks a lot
[Xperia Z1 General] f_u_006:
Downgrade, Root by anymethod you like, Install recovery and then visit this thread:

http://xdaforums.com/showthread.php?t=2628185

Then download the prerooted firmware with dualrecovery...

Hit thanks if this helped you.
[Xperia Z1 General] Stealthy Hunter:
after downgrade I successfully rooted my Xperia Z1 but....I can't update to latest fw..

according to what I read the ones who were able to update has lost the root..??

I have cwmbackup ,can I use it after flashing NUT ftf..(I backed up my device when I was on UB with root but now I relocked)..
[Xperia Z1 General] algarues:
Doing it

Thank you
[Xperia Z1 General] f_u_006:
No you can't, because it will restore the whole firmware, cache and..... anything else. (Waste of your update)

Just try to update your phone using NUT is flashable zip, which is prerooted and also have a dualrecovery.

xdaforums.com/showthread.php?t=2628185
[Xperia Z1 General] aimfire72:
Hi, just got my Z1 and while I'm experienced with rooting and unlocking bootloaders on other phones, I'm kind of new to Sony...

So, after scanning this giant thread, I'm still confused about which tool to use for root... Is vRoot still safe to use? Or is there something better?

Thanks!
[Xperia Z1 General] 301stSpartan:
vRoot and Kingo both collect your IMEI number, but no one really knows if they're doing anything bad with it. To be safe, you can use Bin4ry's method (here) or the tool which he got the source from the Z1 from (here).
[Xperia Z1 General] aimfire72:
Excellent, thank you much! I think I'll go with the Bin4ry method, just to be safe.

Aside from running custom kernels or AOSP/CM roms, is there any good reason to unlock the bootloader?
[Xperia Z1 General] 301stSpartan:
Nope. Only real advantage is flashing custom kernels (which is obviously a requirement of running AOSP). Definitely back up your TA partition before you unlock and keep that backup safe.

Ps.... I'm running Slimkat and it's pretty amazing on our device, so I'm definitely a fan of unlocking
[Xperia Z1 General] aimfire72:
Ok, cool - thanks again!

I may unlock the BL at some point, but for now, I'll probably hold off.
[Xperia Z1 General] AndroidInsanity:
Hi guys.

I am on iHackers ROM and I unlocked my BL successfully, after switched my device on it got stuck on boot logo and it now bootloops.

I can still access custom recovery so i re installed the ROM and it does the same :S what can i do guys :S
[Xperia Z1 General] f_u_006:
I didn't got what you said, You switched your device from what?

Do you mean you switched to stock? Before flashing a ROM be sure to wipe the system and cache first and then flash it.
[Xperia Z1 General] AndroidInsanity:
as it says... I switched my device ON....

Fixed now anyway by flashing stock ftf and doing whole process again.
[Xperia Z1 General] f_u_006:
I apology for my mischief!
[Xperia Z1 General] zvone9489:
Is there a way to somehow enable bootloader unlocking if it has been made unavailable by my provider (t-mobile). I was maybe thinking of sim unlocking my phone on all networks. Maybe that will work? Any help would be appreciated
[Xperia Z1 General] f_u_006:
Very well....!!! Go to your mobile dialpad and dial *#*#7378423#*#* which is the UAN number of "SERVICE", This will open a menu and select "Service Info, Then "Configuration", Now see if Bootloader Unlock Allowed = "Yes" then you can unlock if "No" then there is no way. But if you wanna lose your warranty and unlock bootloader then flash a new firmware from an unbranded country.

visit this site:

xdaforums.com/showthread.php?t=2469191

and pick a firmware then flash it using Flashtool, if you don't know how to flash then the above site have the best tutorial...

After flashing your firmware then check again for your allowance, if allowed then request a key from Sony at

unlockbootloader.sonymobile.com/

they will send an instant email to you containing the Unlocking Key and dont follow the guide from sony instead use the flashtool to unlock your bootloader at ease.

WARNING :Before unlocking your bootloader please take a TA Backup.

if you want your warranty back then restore the TA backup which will automatically relock your bootloader and flash the T-Mobile firmware which can be found on Google.

hit Thanks if this helped you.
[Xperia Z1 General] luisoman2000:
Bootloader unlocking is one thing(used mainly to install AOSP roms), sim unlocking is for networks, and unlocking the bootloader will not sim unlock your phone and vice versa.

DO NOT DO THIS if you have the T-mobile z1 variant. There are several differences between the t-mobile and international version z1. The t-mobile has 32 gigs internal storage and the international version only 16, if you flash the international version of the rom you will end up with a very nice and shiny BRICK!

Also, flashing different firmwares does not change the bootloader unlock allowed status. I had an xperia ion(for At&t) and flashed firmwares for the international version(all ions are the same so that wasn't an issue), bootloader unlock status never changed. As of now there is no way to root the t-mobile z1, but you might want to backup your TA partition anyway.
[Xperia Z1 General] Thechiller86:
thank you for this guide :) very helpful
[Xperia Z1 General] xtoad:
I just got a Bell Xperia Z1 with locked bootloader, which is fine because I just want root... I tried Bin4ry's method but it stops on 'daemon started successfully'. I have experience with samsung phones but this is all new to me... :p

Any ideas?
[Xperia Z1 General] maid:
De Brand

I wish to de brand my xperia z1 and flash to kitkat.

My software is 14.1.g.2.59

Which tutorial should I follow (newb)
[Xperia Z1 General] 301stSpartan:
Try using the other tool I linked. That's the one I used, so I'm not too familiar with Bin4ry's tool (though it should work).

That is unless you have the Z1S but if yours is from Bell it should be the 6906 and should work as far as I know.

Edit: It seems from the post below mine that Nut's method likely doesn't work on carrier locked devices. Sorry, never tried it on one before