hey guys,
I'm looking to pick up this device hopefully tomorrow,
I plan on using it for 4-6 months only
I want to install a clean rom, something along the lines of cyanogenmod but I need to preserve the stock rom as when I return this device to IT they require that it be the same stock rom..
would it be relatively easy to install a recovery on this and backup the stock rom before I wipe it and install an aftermarket rom?
from the limited research I've done, looks like I need to have a specific kernel installed before I can install a root and recovery
I don't mind doing further research but I figured I might as someone that has been through this already...
thanks!
You need to root your device with a root tool (kingo root, vroot or anything like that), than backup your ta-partition (important for warranty) and after that you can unlock your bootloader for installing custom kernels and firmwares with Faltboot.
Just be sure to play your ta back and relock the phone before you give it back.
Gesendet von meinem C6903 mit Tapatalk
I should add that the IT dept won't take an indepth look at the device to see if it was flashed with a different rom
all they care about is the way the phone loads and if it's stock, they will just package it and return it to the carrier/auctions
therefore, I'm mainly concerned with the custom images that show up when installing aftermarket roms..
As long as your ta-partition is in tact you can use Sony updated service to restore to stock
Gesendet von meinem C6903 mit Tapatalk
Don't go for it loads of faults
Sent from my C6902 using XDA Premium 4 mobile app
To install Cyanogenmod you have to Unlock Bootlader because that Rom have Custom Kernel. Before Unlock it you have to Root your Device and Backup TA and DRM keys, if you do not do that you will never be able to Relock your Bootlader. You don't have to Backup your Stock Rom, just flash, with Flashtool v.0.9.13, one of this HERE, they are all Stock and use the one for you Model. Remember to do not relock your Bootlader on Custom Roms with Custom Kernels, you will brick your phone. First flash Stock FTF then Relock Bootlader.
To root your phone with Locked Bootlader you have to follow carefully this NUT Method, HERE
or you can use this method with Custom Rom for Locked Bootlader too, Step by Step Guide Page 2, Post #16 HERE
Good Luck.
thanks for the help guys,
turns out they were out of stock of the z1, my next option the lg g2 was also out of stock
alas, stuck with a note 3 now :/
Related
So I installed CM10.2 on my phone. For that I had to root and unlock my bootloader. I didn't really like it to be honest so I decided that I wanted to go back to stock rom, the problem however, is that i'm not sure how I should do this. I made a backup of my TA Partition so I also could get my DRM keys (Bravia Engine, etc) back. I don't know what I should do first and I was wondering if there is someone who could help me through this process. Do I first need to flash stock kernel, then flash stock ftf, and then install that TA backup in order to relock my bootloader? But I thought I needed root for this, if I flash a stock ftf then root will be gone right? So many questions
Thank you in advance
parfa10 said:
So I installed CM10.2 on my phone. For that I had to root and unlock my bootloader. I didn't really like it to be honest so I decided that I wanted to go back to stock rom, the problem however, is that i'm not sure how I should do this. I made a backup of my TA Partition so I also could get my DRM keys (Bravia Engine, etc) back. I don't know what I should do first and I was wondering if there is someone who could help me through this process. Do I first need to flash stock kernel, then flash stock ftf, and then install that TA backup in order to relock my bootloader? But I thought I needed root for this, if I flash a stock ftf then root will be gone right? So many questions
Thank you in advance
Click to expand...
Click to collapse
[Tutorial] Xperia Z & ZL Bootloader Unlocking/Relocking
:good:
hit thanks
x102x96x said:
[Tutorial] Xperia Z & ZL Bootloader Unlocking/Relocking
:good:
hit thanks
Click to expand...
Click to collapse
Thank you for your response but this is only relocking etc. My problem is that I don't know in what order I should do things. So far I think I should do it like this (but i'm not sure, so i'm asking for someone to tell me if it's wrong) : 1. Simply flash a stock ftf (with the ftf the stock kernel will be installed too, right?) 2. Relock bootloader 3. Then apply the TA Backup to get the DRM Keys back.
Is this the right order to do things? Will I make an expensive brick out of it if I do it like that?
Flash a stock FTF and root it (or flash a pre-rooted stock based ROM through recovery ). Then restore TA, which will automatcally lock bootloader and restore DRM keys
Sent from my C6603 using xda app-developers app
shoey63 said:
Flash a stock FTF and root it (or flash a pre-rooted stock based ROM through recovery ). Then restore TA, which will automatcally lock bootloader and restore DRM keys
Sent from my C6603 using xda app-developers app
Click to expand...
Click to collapse
Thank you very much, I tried this and it worked.
Alrighty some background info and where I'm at. I've got some dev (Android XML layout fixes) experience on a custom ROM on i9300 and I finally decided to upgrade my phone onto the beasty Xperia Z1.
My phone came factory shipped with .290. It's the C6903 model. I've been looking up videos and trying to find info about where to begin with getting my root, bootloader, cwm, and custom ROM install going. Then I found out about the TA partition and that even though my phone allows me to unlock the bootloader, it's a smart idea to first backup the TA partition before I unlock my bootloader via the $ony website. With the TA backed up I can revert my phone back to stock at some point and restore the TA so that my phone looks basically factory fresh. So I realised that I probably ought to back up my TA in case of any warranty issues. Which means I need to get my phone rooted before anything else. (I hope my assessment has been correct so far, it would be awesome if someone can verify the above paragraph)
Now this is where I am completely confused. I've attempted to use VRoot - and of course it does not support the .290 firmware.
Then I found out that it is possible to downgrade the firmware so that I can root and TA backup before bootloader unlock. This is the knowledge level I am up to. I have no idea which firmware to downgrade to or how to even actually perform a successful downgrade. (I've kinda gotten frustrated at the huge slab of info and I need some specific info from some users more experienced at this than I am at this point..)
I read how some people have flashed down to .534 and others have flashed down to .257. I would like to know exactly what steps I should take and which is the best firmware to downgrade to, just to do a root crack and TA backup. Can you even downgrade firmware without bootloader involved?
Basically the flow of what I need to do right now is this (I think):
1) Downgrade firmware to probably .534 from my current .290 (I need to flash the FTF using Flashtool, correct?)
2) Install Root with VRoot
3) TA Backup (http://forum.xda-developers.com/showthread.php?t=2292598&highlight=ta)
4) Upgrade back to .290 (Do I do this via OTA? I hope it is not difficult to do it via some command line tools if it comes to that..)
--- Above step also gets rid of most of Root access provided to the older firmware (this is what I've read.. Is this correct?)
5) Unlock bootloader (must do this in version .290 to avoid the camera bug), via guide on Sony website
6) Go crazy with all the custom things I want to install - CWMRecovery, CM11, etc
7) ???
8) Profit
Can someone please tell me if the above list is the order I need to proceed with?
:good: Thanks for any help you guys can give me. I am truly frustrated by this 290 firmware version! And reading all the topics about people who bricked after attempting similar things without knowing exactly what they needed to do and which order to do it in..
tl;dr - On .290 firmware, I want to backup TA before I unlock bootloader, which firmware version do I downgrade to?
SleepinDevil said:
Alrighty some background info and where I'm at. I've got some dev (Android XML layout fixes) experience on a custom ROM on i9300 and I finally decided to upgrade my phone onto the beasty Xperia Z1.
My phone came factory shipped with .290. It's the C6903 model. I've been looking up videos and trying to find info about where to begin with getting my root, bootloader, cwm, and custom ROM install going. Then I found out about the TA partition and that even though my phone allows me to unlock the bootloader, it's a smart idea to first backup the TA partition before I unlock my bootloader via the $ony website. With the TA backed up I can revert my phone back to stock at some point and restore the TA so that my phone looks basically factory fresh. So I realised that I probably ought to back up my TA in case of any warranty issues. Which means I need to get my phone rooted before anything else. (I hope my assessment has been correct so far, it would be awesome if someone can verify the above paragraph)
Now this is where I am completely confused. I've attempted to use VRoot - and of course it does not support the .290 firmware.
Then I found out that it is possible to downgrade the firmware so that I can root and TA backup before bootloader unlock. This is the knowledge level I am up to. I have no idea which firmware to downgrade to or how to even actually perform a successful downgrade. (I've kinda gotten frustrated at the huge slab of info and I need some specific info from some users more experienced at this than I am at this point..)
I read how some people have flashed down to .534 and others have flashed down to .257. I would like to know exactly what steps I should take and which is the best firmware to downgrade to, just to do a root crack and TA backup. Can you even downgrade firmware without bootloader involved?
Basically the flow of what I need to do right now is this (I think):
1) Downgrade firmware to probably .534 from my current .290 (I need to flash the FTF using Flashtool, correct?)
2) Install Root with VRoot
3) TA Backup (http://forum.xda-developers.com/showthread.php?t=2292598&highlight=ta)
4) Upgrade back to .290 (Do I do this via OTA? I hope it is not difficult to do it via some command line tools if it comes to that..)
--- Above step also gets rid of most of Root access provided to the older firmware (this is what I've read.. Is this correct?)
5) Unlock bootloader (must do this in version .290 to avoid the camera bug), via guide on Sony website
6) Go crazy with all the custom things I want to install - CWMRecovery, CM11, etc
7) ???
8) Profit
Can someone please tell me if the above list is the order I need to proceed with?
:good: Thanks for any help you guys can give me. I am truly frustrated by this 290 firmware version! And reading all the topics about people who bricked after attempting similar things without knowing exactly what they needed to do and which order to do it in..
tl;dr - On .290 firmware, I want to backup TA before I unlock bootloader, which firmware version do I downgrade to?
Click to expand...
Click to collapse
Yes, you need to downgrade to .534 and root before you can backup your TA
Here is a guide on how to achieve that
If you follow the video guide you will end up with rooted .290
Then backup you TA:
and go to Sony's website to unlock the bootloader. An unlocked bootloader will let you flash custom kernels to your phone and thus you will be able to use roms such as CM, AOSP etc.
NEXT TIME PLEASE READ BEFORE CREATING A NEW THREAD. THIS HAS BEEN COVERED 100's OF TIMES
in general you have to do these steps:
downgrade to an early firmware that can be rooted and root it.
then install dual recovery.
in dual recovery wipe your phone, flash rom, flash again superuser and again dual recovery.
power off phone.
power on and direct flash kernel,baseband, bootbundle. for this i would recommend using NUTs stripped FTF files. also from his site you get recovery and superuser/supersu.
you only loose TA when you unlock your bootloader. unlocking is only neccessary if you plan to flash a custom kernel too.
when you are on rooted firmware backup TA, you never know if you need it later.
a good step by step tutorial is iHackers 2.1 thread.
also be prepared that actually there is a chance to brick your device. many can be restored using Sony Update Service or by flashing a full stock FTF, but some devices need a new mainboard. things are a litte bit tricky at the moment
shem2409 said:
Yes, you need to downgrade to .534 and root before you can backup your TA
Here is a guide on how to achieve that
If you follow the video guide you will end up with rooted .290
Then backup you TA:
and go to Sony's website to unlock the bootloader. An unlocked bootloader will let you flash custom kernels to your phone and thus you will be able to use roms such as CM, AOSP etc.
NEXT TIME PLEASE READ BEFORE CREATING A NEW THREAD. THIS HAS BEEN COVERED 100's OF TIMES
Click to expand...
Click to collapse
When on 4.3 and I tried many time still can't downgraded to 534. How to do it? Thank!
Lukily my TA had been backup.
Send from GT-I9506 using Tapatalk
Devices: Samsung GT-I9506 and Sony Z1 C6903
timberwolf60 said:
When on 4.3 and I tried many time still can't downgraded to 534. How to do it? Thank!
Lukily my TA had been backup.
Send from GT-I9506 using Tapatalk
Devices: Samsung GT-I9506 and Sony Z1 C6903
Click to expand...
Click to collapse
Here is a video on how to use flashtool
The previous video that I have sent you shows you step by step how to do everything
i know what you're thinking.. if youre asking for help you probably shouldn't be playing around with this stuff.. well, it's just that i've only recently switch from iDevices, to the Xperia Z1, i've only ever had apple products until 5 months ago.
i've searched for hours yet can not find "simple" enough guides for "noobs". i'm not stupid, its just confusing being linked to site after site after site just to find step one.
i'm stock, 14.2.A.1.136, ive read i must root to do TA Backup, i've tried downgrading (to a rootable FW) using flashtool etc, but i just kept getting bootloop (unchecked all boxed and check the "dont verify"?). i cannot flash a rooted 1.136 because you must have unlocked bootloader, & if i do it without ta backup, ill lose my keys..
i guess what i'm asking is if someone can provide the correct way to downgrade to a rootable firmware. what steps do i take in doing it all correctly, as in, downgrading, rooting, flashing cwm, kernals, cyanogenmod etc.
Downgrade to 543 via flashtool, root your device and upgrade it with the method provided by nut
Gesendet von meinem C6903 mit Tapatalk
Use .534 FW provided by NUT from Post #3 HERE, then Root with Bin4ry and Install Dual Recovery, then Follow the instruction from HERE to Update directly to .136. When you got Rooted your Phone you can Backup TA First then Unlock Bootloader and then think to install CM. Watch Video Tutorial Hot to Root too.
eclyptos said:
Use .534 FW provided by NUT from Post #3 HERE, then Root with Bin4ry and Install Dual Recovery, then Follow the instruction from HERE to Update directly to .136. When you got Rooted your Phone you can Backup TA First then Unlock Bootloader and then think to install CM. Watch Video Tutorial Hot to Root too.
Click to expand...
Click to collapse
thanks guys.
if i was wanting to just install cwm & cyanogenmod, is there any need to updated from the rooted .534 to 1.136? or can i just flash them both while on the rooted .534?
i've no access to a computer atm, but will downgrade when i can & click thanks.
EDIT; bootloader unloack bug exists with 4.2, which is why i have to update to 1.136, just remebered that. Aha
Ok, it's not like I didn't had search how to do it, it's just that so far my search has been very frustrating.
First, my phone has stock rom, v. 12.1.A.1.201 with JB 4.3. And I just want to flash a stock rom (maybe a little tweak to make it smooth and faster) + root.
So I searched (maybe not too good) how to do it, and I found this: to install any rom, you need to have an unlocked bootloader, so far so good, but then when you search on how to unlock it, surprise! you need to be root to backup drm keys ... Ok then, I tried another aproach, maybe flashing from custom recovery, but then again to install a custom recovery you need to be rooted ... back to the begining.
So if anyone can enlighten on how to fulfill my very reasonable request, I would be sooo happy.
No need to unlock bootloader in order to flash stock based ROMs or for rooting. But for flashing custom kernels/ROMs that need a custom kernel, unlocked BL is a must.
There are many guides. Check through this index.
http://forum.xda-developers.com/showthread.php?t=2618222
It's sticky btw
Basically you have to (because you're locked BL),
1. Downgrade to 4.1.2
2. Root with DoomLord method.
3. Install recovery.
4. Flash a pre-rooted 4.3 ROM (.201) through recovery. Flash SuperSU update at the same time. Shutdown phone (NOT reboot).
5. Flash stock 4.3 kernel (.201) via flashtool.
6. Done. On rooted .201. Then install a recovery (because previous recovery got erased with ROM flashing).
#Details in guides. Good one here: http://forum.xda-developers.com/showthread.php?t=2727143
**Optional: Do a TA partition backup and keep it safe. Someday you can unlock the BL
You can follow mrhnet's post that helped me solve my dilemma! You can downgrade your phone, exploit root, flash recovery, flash SuperSU and then backup TA. Once TA backed up, the freedom is finally yours!
Here's a link: http://forum.xda-developers.com/showpost.php?p=51005416&postcount=10
Can someone please help me..
I have an Xperia SP currently running 4.1.2 rooted, bootloader locked.
My aim is to upgrade to 4.3.3 and root, for which i will have to unlock the bootloader. To do so I need a TA partition backup , for which again, root is required.
So, my question is that is it okay if I take a TA Backup now [in 4.1.2] and then upgrade OTA and unlock bootloader, root and then restore the 4.1.2 TA backup onto 4.3.3 in order to restore DRM keys and Relock the bootloader?
Has anyone done this?
is it safe?
Sent from my C5302 using Tapatalk
Why don't you install a recovery and after that flash a pre-rooted 201???
Sent from my C5303 using XDA Free mobile app
Vforvanadium said:
Can someone please help me..
I have an Xperia SP currently running 4.1.2 rooted, bootloader locked.
My aim is to upgrade to 4.3.3 and root, for which i will have to unlock the bootloader. To do so I need a TA partition backup , for which again, root is required.
So, my question is that is it okay if I take a TA Backup now [in 4.1.2] and then upgrade OTA and unlock bootloader, root and then restore the 4.1.2 TA backup onto 4.3.3 in order to restore DRM keys and Relock the bootloader?
Has anyone done this?
is it safe?
Sent from my C5302 using Tapatalk
Click to expand...
Click to collapse
You don't have to unlock bootloader. You can flash a prerooted rom with built in 201 stock kernel
Verstuurd vanaf mijn C5303 met Tapatalk
Nanostray said:
You don't have to unlock bootloader. You can flash a prerooted rom with built in 201 stock kernel
Verstuurd vanaf mijn C5303 met Tapatalk
Click to expand...
Click to collapse
How ? Link please.
Sent from my C5302 using Tapatalk
Vforvanadium said:
How ? Link please.
Sent from my C5302 using Tapatalk
Click to expand...
Click to collapse
Just go to the Android development section, and you'll find plenty. You can also choose to flash a stock based rom. I went from 254 to existenz 3.3.0 (which is 201)
Verstuurd vanaf mijn C5303 met Tapatalk
For downgrading see my tutorial in link below (flashing with flashtool)
For rooting that 4.1.2 see: http://forum.xda-developers.com/showthread.php?t=2440375
and for CWM installation see: http://forum.xda-developers.com/showthread.php?t=2649923
I'd love to see you guys use search a bit more! This question has been asked a lot
Hi All!
First of all I just want to get before any haters and say yes I'm an ass who should have read more about rooting and flashing but here I am..:angel:
I wanted to update my custom rom and to start fresh I decided to try to flash Format Data And wipe all on my phone.
Now the trouble i'm having is: no matter which version of twrp I use or how many times I flash my device with fastboot the error always comes when trying to flash a Rom onto the phone with twrp.
I can flash with flashtool so my phone is working for now but I've tried several times to go back to twrp but with no luck.
In twrp I've tried changing file systems wiping everything again factory reset. But no matter what I do the error still comes back with unable to mount system.
Any suggestions?
I do not have experience with custom Roms, but I know that these only work on unlocked bootloaders (exept this was overcome in the meantime) Have you unlocked it? Note: if you do you loose DRM keys. So backup before.
Gesendet von meinem D5803 mit Tapatalk
I've unlocked my bootloader via sonys website so I guess my DRM keys is long gone,
I have been flashing roms on it before so shouldnt be a problem really.
I guess I'm stuck with installing ftf files for now, got to have it for work tomorrow.
GeScha said:
I do not have experience with custom Roms, but I know that these only work on unlocked bootloaders (exept this was overcome in the meantime) Have you unlocked it? Note: if you do you loose DRM keys. So backup before.
Gesendet von meinem D5803 mit Tapatalk
Click to expand...
Click to collapse
i got this problem too, when i flash another stock 6.0.1 rom (for SO-02G) on a Z3C (SO-02G) had installed 6.0.1 stock rom (D5833) using TWRP 3.0.2-0.
Then i need to flash back to stock 4.4.4 rom, and install new rom using TWRP 2.x.x, all work well.
So i guess u should flash back KK version before flash your custom rom. Goodluck
xtbtvd12399 said:
i got this problem too, when i flash another stock 6.0.1 rom (for SO-02G) on a Z3C (SO-02G) had installed 6.0.1 stock rom (D5833) using TWRP 3.0.2-0.
Then i need to flash back to stock 4.4.4 rom, and install new rom using TWRP 2.x.x, all work well.
So i guess u should flash back KK version before flash your custom rom. Goodluck
Click to expand...
Click to collapse
Well sir,
Thank you very much! Solved my problems!
Barilla86 said:
Well sir,
Thank you very much! Solved my problems!
Click to expand...
Click to collapse
You are welcome