Develop Bugs

[Q] Unrooting Arc (LT15i) to stock firmware

Hi guys.
I'm having a little trouble finding out how to un-root and flash back to stock rom and kernel.
I have searched around for like one hour, and cant seem to find any threads that's answers my question. So therefore i need some help.
I want to re-lock and get back to stock (As i just bought the phone).
Information's about the phone (Kernel/firmware/etc.)
Android Version: 2.3.3
Baseband version: 7X30A-AAABQMAZM-1290_21-22
Kernel: 2.6.32.9-perf [email protected] #1
Version: 3.0.1.A.0.145
If there is more information you need, then just ask
Thanks in advance

For relocking your bootloader check this:
http://forum.xda-developers.com/showthread.php?t=1134335
And for unrooting this:
http://forum.xda-developers.com/showthread.php?p=18879974#post18879974
Or just flash a firmware using PCC or SEUS, then the root is also gone (after you relocked your BL!)

if you want fresh stock,
relock bootloader, flash any global fw,
and reflash using SEUS.

dp94 said:
For relocking your bootloader check this:
http://forum.xda-developers.com/showthread.php?t=1134335
And for unrooting this:
http://forum.xda-developers.com/showthread.php?p=18879974#post18879974
Or just flash a firmware using PCC or SEUS, then the root is also gone (after you relocked your BL!)
Click to expand...
Click to collapse
Where do i find one that fits my phone ? Im not sure which one to pick I read the two links you posted. Any i read it through, and i cant use them, beacuse i havent used "Easy Rooting Toolkit" :S

2hvybg3yb said:
Where do i find one that fits my phone ? Im not sure which one to pick I read the two links you posted. Any i read it through, and i cant use them, beacuse i havent used "Easy Rooting Toolkit" :S
Click to expand...
Click to collapse
Flash the relock *.ftf file with flashtool.
Then flash another firmware using PCC or SEUS.
You'll have a locked BL, stock firmware without root.
I think that's what you want.

dp94 said:
Flash the relock *.ftf file with flashtool.
Then flash another firmware using PCC or SEUS.
You'll have a locked BL, stock firmware without root.
I think that's what you want.
Click to expand...
Click to collapse
Exactly Want to use OTA Updates, because im trying to sell my phone. so i can buy a Nexus

[Q] How to Backup stock Kernel + ROM ?

Hello Guys !
I wanna try some custom ROM so before doing that want to backup my Kernel & ROM. If anything gone wrong so I can revert back to original ROM.
My Cell details:
Xperia Arc S
LT18i
Android Version 2.3.4
Baseband Version -64
Build number
4.0.2.a.0.62
Locked bootloader
& unrooted.
Please someone guide me....
Thanks in advance...

If your bootloader's locked then you can't back up. You can only reload(repair)it from PC companion.
sinkster©

Thanks sinkster !
Ok done unlocked bootloader.
Then advice the further steps...

XPERIA CWM AUTO INSTALLER
download this app and install CWM recovery on ur phone...
Then reboot ur phone into recovery mode...
TO DO THIS, LONG PRESS BACK BUTTON WHILE THE PHONE RE-BOOTS
(OR)
KEEP TAPPING VOLUME DOWN BUTTON...
After it boots into recovery, go to BACKUP & RESTORE and Select Backup...
This will create a NANDROID BACKUP on your phone exactly as it is...including apps n contacts n all other data..
you can find it in SDCARD/Clockworkmod/Backup/
Good day...

If you wanted to take a backup without installing CWM you can use fastboot to boot (not flash) a kernel that has CWM built in.

thanks amulbaby
I will try and get back here with comment ...
EDIT:
I tried that steps but it will works only on rooted phone ..., can not enter in to recovery mode by pressing any key, it normally boots up and appear home ...

smartarse93 said:
If you wanted to take a backup without installing CWM you can use fastboot to boot (not flash) a kernel that has CWM built in.
Click to expand...
Click to collapse
How to do so... any guide links pls .. .

ShresthasR said:
thanks amulbaby
I will try and get back here with comment ...
EDIT:
I tried that steps but it will works only on rooted phone ..., can not enter in to recovery mode by pressing any key, it normally boots up and appear home ...
Click to expand...
Click to collapse
Why don't you root it with flashtool then?
But for that u wud have to downgrade to .42, with flashtool before rooting

Hey I am also wondering about this. I have lt15i flashed with Official .562, locked bootloader and CWM installed via flashtool.
Which ICS roms will work with official .562 and locked bootloader? I have been searching all morning but not a lot of updates regarding this since the official .562 release.

djsneak1 said:
Hey I am also wondering about this. I have lt15i flashed with Official .562, locked bootloader and CWM installed via flashtool.
Which ICS roms will work with official .562 and locked bootloader? I have been searching all morning but not a lot of updates regarding this since the official .562 release.
Click to expand...
Click to collapse
PROBABLY THIS ..... NOT SURE ....
T.E.A.M. Stock Rom for 2011 Xperia devices

amulbaby said:
Why don't you root it with flashtool then?
But for that u wud have to downgrade to .42, with flashtool before rooting
Click to expand...
Click to collapse
Here is the point I was looking for these alternative . . .
I have STOCK ROM with 4.0.2.a.0.62, actually I want to backup these stuff, I read about that downgrading via flashtool and root, if I flashed via flashtool that STOCK ROM will wipe...
Anyway here what I did to make a copy of my stock firmware & upgraded to ICS firmware & rooted.
Repaired my phone using Sony update service to download and backup STOCK firmware
Flashed with flashtool official firmware LT18i 4.1.A.0.562 NCB Icecream Sandwich Official

First you need to download a kernel that has cwm built in, I would search for recoveryARC.IMG then you also need fastboot from the SDK.
All you would do is connect your phone I'm fastboot then run in a command prompt fastboot boot recoveryARC.IMG. Your phone would then boot using that kernel and you can enter cwm by pressing the vol down several times. This process wouldn't flash your kernel only load it temporarily.
I would try and find a guide about them but I'm on my phone.
Sorry just noticed you've already done it, congrats enjoy ics.
Sent from my LT18i using XDA

smartarse93 said:
First you need to download a kernel that has cwm built in, I would search for recoveryARC.IMG then you also need fastboot from the SDK.
All you would do is connect your phone I'm fastboot then run in a command prompt fastboot boot recoveryARC.IMG. Your phone would then boot using that kernel and you can enter cwm by pressing the vol down several times. This process wouldn't flash your kernel only load it temporarily.
I would try and find a guide about them but I'm on my phone.
Sorry just noticed you've already done it, congrats enjoy ics.
Sent from my LT18i using XDA
Click to expand...
Click to collapse
Thanks bro ...
I already upgraded, anyway I want to know the process, you mentioned here this process wouldn't flash kernel only load it temporarily, I am confused...
Could you describe in details .. ? Actual what happens if we flash recovery img...

Well you can use fastboot to install the kernel which overwrites the previous one, or you can use it boot the kernel which just sends the kernel to the phone which the boots and temporarily uses the kernel. However when the phone next shuts down it will return to normal use.
If you flash a kernel it writes the .IMG to the boot partition. So if I wanted to use a kernel that stayed between reboots I would use 'fastboot flash boot kernelname.IMG'
However if I was running stock I could use recoveryARC.IMG with cwm, and do fastboot boot recoveryARC.IMG then run update.zip as normal. Then all you have to do is reboot, you'll be back to stock but the update would still be installed.
Sorry if it's not cleat, the best I could do on my phone.
Sent from my LT18i using XDA

Please elaborate on backing up STOCK ROM
ShresthasR said:
Here is the point I was looking for these alternative . . .
I have STOCK ROM with 4.0.2.a.0.62, actually I want to backup these stuff, I read about that downgrading via flashtool and root, if I flashed via flashtool that STOCK ROM will wipe...
Anyway here what I did to make a copy of my stock firmware & upgraded to ICS firmware & rooted.
Repaired my phone using Sony update service to download and backup STOCK firmware
Flashed with flashtool official firmware LT18i 4.1.A.0.562 NCB Icecream Sandwich Official
Click to expand...
Click to collapse
Can you please give me details on you did this? It is precisely what I want to do (ie. Backup the stock carrier rom on my Xperia Arc before flashinging an old ROM in order to root it).
Did you use the "repair" option from "Sony PC Companion 2.1>Support Zone>Phone software update>repair phone"?
Or did you use the software from here: http: // w ww(dot)sonymobile(dot)com/gb/tools/update-service/
Can you please tell me the whole procedure on how you did the backup of the STOCK ROM? Thanks!

King of Procrastinators said:
Can you please give me details on you did this? It is precisely what I want to do (ie. Backup the stock carrier rom on my Xperia Arc before flashinging an old ROM in order to root it).
Did you use the "repair" option from "Sony PC Companion 2.1>Support Zone>Phone software update>repair phone"?
Or did you use the software from here: http: // w ww(dot)sonymobile(dot)com/gb/tools/update-service/
Can you please tell me the whole procedure on how you did the backup of the STOCK ROM? Thanks!
Click to expand...
Click to collapse
Actually what I did just followed this guide
http://forum.xda-developers.com/showthread.php?t=1304634
At this thread just follow the video tutorial under section
"How to backup your carrier firmware using Update Service"
Youtube link: http://youtu.be/bB77gWRUI_A
Thanks XperienceD for nice guide

just want to ask, does CWM backup also backups the kernel or firmware?
and how do i restore stock kernel with or without using ODIN?
how do i go on flashing custom firmware? i really do need explanation especially for the .img file that i have been seeing guys.
please help me out because i really want to learn more about software and stuff.
thank you very much and god bless you guys.

ROM backup OK; How to take backup of Kernel
I am using Sony Xperia Ray ST18i
used it for a year with stock kernel and ROM
rooted it long ago, but was afraid of custom ROMs
last month I unlocked bootloader, flashed ROM and custom ROM (beanstalk 4.3.075), enjoying it but obviously not so stable like stock
Now if I wish to move back to my stock kernel and ROM
what steps are required.
I suppose
1. flash the stock kernel
2. restore from backed up ROM (I do have nandroid backup of stock ROM)
but how to achieve the step 1, as I learnt nandroid backup doesn't backs up ROM.
My collegue is having same phone still on stock, Can I use his phone somehow to extract kernel. I searched and found a zip to be used through CWM which backs up kernel it was meant for some samsung phone I tried but failed.
Thanks in advance.
Do I need to supply some more information to get help?

Backup stock ROM
I used this backup guide, but dont know if it will work for you http://helpadude.com/how-to-backup-your-android-rom/
If it does plz give thanks

[Q] I want to reset Xperia S

So I have the Trinity Rom installed, unlocked bootloader, trinity x kernel and a rooted Xperia S. I want to go back to the beginning, to start everything from scratch. Can someone tell me a step by step procedure to revert to the old system because the PC Companion won't repair it because of the custom firmware.
Thanks!

Download and install Emma(the sony developers tool). That can reflash your phone to stock firmware. Or flash an ftf though Flashtool.
Also, there is a sop on the xda website regarding relocking the bootloader if you want to do that.
Sent from my LT26i using Tapatalk

Hey
o0 Matt 0o said:
Download and install Emma(the sony developers tool). That can reflash your phone to stock firmware. Or flash an ftf though Flashtool.
Also, there is a sop on the xda website regarding relocking the bootloader if you want to do that.
Sent from my LT26i using Tapatalk
Click to expand...
Click to collapse
I have flashed the stock kernel somehow and relocked the bootloader while still having the custom rom, I knew that my phone wouldn't go past the sony logo, because when I was installing the rom I chose bootloader unlocked so now I can't win either way. What should I do, still install emma?

ysnmue95 said:
I have flashed the stock kernel somehow and relocked the bootloader while still having the custom rom, I knew that my phone wouldn't go past the sony logo, because when I was installing the rom I chose bootloader unlocked so now I can't win either way. What should I do, still install emma?
Click to expand...
Click to collapse
I would try emma. Do some research first to understand it
Sent from my LT26i using Tapatalk

ysnmue95 said:
So I have the Trinity Rom installed, unlocked bootloader, trinity x kernel and a rooted Xperia S. I want to go back to the beginning, to start everything from scratch. Can someone tell me a step by step procedure to revert to the old system because the PC Companion won't repair it because of the custom firmware.
Thanks!
Click to expand...
Click to collapse
OMFG, what were you trying to accomplish by those actions? Why relock bootloader? Only thing you had to do is to flash prefered FW via Flashtool.

[Q] Can C6506 - 10.4.B.0.569 Be Unlocked And Rooted

I have an Xperia ZL C6506 - 10.4.B.0.569
I went into the service menu and it says my bootloader can't be unlocked
Is there anyway to work around this and unlock it anyway? If not can I still root my phone?
If so please advise as to how. I looked on the forums but most posts relate to unlocked bootloader or
a different model or build.
If you need more info please let me know.
Thanks

Endrith said:
I have an Xperia ZL C6506 - 10.4.B.0.569
I went into the service menu and it says my bootloader can't be unlocked
Is there anyway to work around this and unlock it anyway? If not can I still root my phone?
If so please advise as to how. I looked on the forums but most posts relate to unlocked bootloader or
a different model or build.
If you need more info please let me know.
Thanks
Click to expand...
Click to collapse
You can root it and install recovery. Unfortunately you cannot unlock the bootloader.
This means that you can only flash stock based Roms, not any AOSP Roms like cyanogenmod, aokp, omni, p.a.c, etc... More specifically, you can only flash stock kernels. The ROM is Dependant on the kernel you are using. Stock kernel for stock Roms. Aosp kernel for aosp based Roms.
With Sony's devices (as of late anyway), the kernel is baked into the boot.IMG. And you can only alter, change, or flash a custom boot.IMG if your bootloader is unlocked. Sucks, but that's how it is.
Sent from my C6503 using Tapatalk

Thanks for the info.
At least I can still root the phone which at this point was my primary interest.
As I mentioned I have not seen any rooting info for my particular build or model together. Am I missing something?
Did I not see it or has no one done it yet for this build/model setup.
Where would you suggest I go from here?

Endrith said:
Thanks for the info.
At least I can still root the phone which at this point was my primary interest.
As I mentioned I have not seen any rooting info for my particular build or model together. Am I missing something?
Did I not see it or has no one done it yet for this build/model setup.
Where would you suggest I go from here?
Click to expand...
Click to collapse
You need to downgrade to .423 stock kernel. Use Androxyde's Flashtool to flash that kernel.
Then use Doomlord's Rooting Toolkit to root your phone.
After that, flash the .569 kernel with Flashtool.
Now you can install NUT's dualrecovery.
Here are the steps:
http://forum.xda-developers.com/showthread.php?t=2388946
At point 11. you flash the .569 kernel..

I have successfully rooted my phone.
However I can't figure out how to get it back to .569
Do I need to use the Flash and Stripped version(This seems to be linked to rooting)
Or can I just use this
[FTF] Xperia ZL (C6506) 4.3 - 10.4.B.0.569 - Generic US
Found at this link
http://forum.xda-developers.com/showthread.php?t=2637847
Edit:
On a side note will I be able to update to 4.4 Kitkat when it is released for my phone by the normal download
or will I have to flash it to keep the root?
Edit:
So I tried flashing the Full FTF but ended up losing root. I tried to do the other option of using the flash/stripped version but it says I need TWRP and there
is no version for the ZL only the Z. Will the Z one work or am I going about this the wrong way.
Any advice would be greatly appreciated. Thanks.

Endrith said:
I have successfully rooted my phone.
However I can't figure out how to get it back to .569
Do I need to use the Flash and Stripped version(This seems to be linked to rooting)
Or can I just use this
[FTF] Xperia ZL (C6506) 4.3 - 10.4.B.0.569 - Generic US
Found at this link
http://forum.xda-developers.com/showthread.php?t=2637847
Edit:
On a side note will I be able to update to 4.4 Kitkat when it is released for my phone by the normal download
or will I have to flash it to keep the root?
Edit:
So I tried flashing the Full FTF but ended up losing root. I tried to do the other option of using the flash/stripped version but it says I need TWRP and there
is no version for the ZL only the Z. Will the Z one work or am I going about this the wrong way.
Any advice would be greatly appreciated. Thanks.
Click to expand...
Click to collapse
Hey,
There is recovery for the ZL, you can get it from Nut's site here http://nut.xperia-files.com/
Looks like his latest recovery is called "ZL-lockeddualrecovery2.7.95-BETA.installer.zip (9.35MB)" at the moment.
If you flash my build 569 and lost root then you used the untouched FTF from Sony and makes your phone completely stock.
What you wanna do is flash back to an old 4.1.2 that will let you obtain root with DoomLord's 1 click method.
Once root is on your phone, install Nut's DualRecovery from the link I just gave you.
Download my 2 files (stripped FTF and flashable zip) and copy the flashable zip on your SDCard.
Now reboot into recovery and flash the flashable zip, once it flashes successfully, power off your phone. DO NOT Reboot.
Use Flashtool and flash the stripped FTF and boot your phone.
You will be on rooted build 569 with root and dualrecovery already installed. :good:
-------
It was also suggested to me for my Xperia tablet that if you already had root and simply wanted to update, all you have to do is:
1) copy zip to SDcard
2) go into recovery and install zip (without wiping anything)
3) turn off phone
4) flash kernel via flashtool
But I haven't tested this way

Thanks Crash338 that worked
I now have a rooted phone with .569

[Q] [Newbie]Troubles reading ftf files

Hi,
I'm new to rooting and flashing custom ROMs, so any help will be greatly appreciated
I'm using an orange xperia lt15i, that I've decided to root and on which I want to run CyanogenMod 9.1
Here's what I've come up with :
flashing a generic ftf to debrand my phone, in orded to unlock the bootloader
install recovery
unlock boot loader
flash CM
The catch is, flashtool (0.9.16.1) can't read any of the ftf files I put in the firmware directory..any idea ?
Did I get the steps in the right order, is there any way to achieve this at all ?
Thanks

Deathtiny said:
Hi,
I'm new to rooting and flashing custom ROMs, so any help will be greatly appreciated
I'm using an orange xperia lt15i, that I've decided to root and on which I want to run CyanogenMod 9.1
Here's what I've come up with :
flashing a generic ftf to debrand my phone, in orded to unlock the bootloader
install recovery
unlock boot loader
flash CM
The catch is, flashtool (0.9.16.1) can't read any of the ftf files I put in the firmware directory..any idea ?
Did I get the steps in the right order, is there any way to achieve this at all ?
Thanks
Click to expand...
Click to collapse
maybe file is wrong download here a new one. this works 100% LINK
also use normal flashtool not 64bit.
install drives from flastool install dir/drivers for your phone
install android sdk (just leave all like it is & press install)
now to the process:
flashing a generic ftf to debrand my phone, in orded to unlock the bootloader i dont think this is need. on sony bl unlock site theres mentioned how to get in service menu & look if bootloader unlock allowed: yes or no. if yes just proceed. any way, CM requires flashng stock ics ftf b4 so do it after unlock...
install recovery no need if you flash CM's kernel later it was recovery built in (all custom)
unlock boot loader
flash cm kernel via fastboot
flash CM dont forget gapps! (google apps)

bejunk said:
maybe file is wrong download here a new one. this works 100%
also use normal flashtool not 64bit.
install drives from flastool install dir/drivers for your phone
install android sdk (just leave all like it is & press install)
now to the process:
flashing a generic ftf to debrand my phone, in orded to unlock the bootloader i dont think this is need. on sony bl unlock site theres mentioned how to get in service menu & look if bootloader unlock allowed: yes or no. if yes just proceed. any way, CM requires flashng stock ics ftf b4 so do it after unlock...
install recovery no need if you flash CM's kernel later it was recovery built in (all custom)
unlock boot loader
flash cm kernel via fastboot
flash CM dont forget gapps! (google apps)
Click to expand...
Click to collapse
Ok so I rechecked service info and status says no, eventhough I remenbered differently and got an unlocking code from sony..
Anyway, guess the best I can do is now limited to rooting...
Thanks

Deathtiny said:
Ok so I rechecked service info and status says no, eventhough I remenbered differently and got an unlocking code from sony..
Anyway, guess the best I can do is now limited to rooting...
Thanks
Click to expand...
Click to collapse
there are several methods of unlocking the bootloader such as testpoint...but its not that easy for newbe...
http://forum.xda-developers.com/showthread.php?t=2737846
look at this maybe it helps