Develop Bugs

[Q] how to update with unlocked bootloader?

Is there a way to update to the latest version 4 with unlocked bootloader? I dont really care if I loose the root or not. The last time I tried to switch to stock from my rooted .145 and update from the phone, my phone "brick" on me. Luckily there is a way to fix the problem.

kuailan said:
Is there a way to update to the latest version 4 with unlocked bootloader? I dont really care if I loose the root or not. The last time I tried to switch to stock from my rooted .145 and update from the phone, my phone "brick" on me. Luckily there is a way to fix the problem.
Click to expand...
Click to collapse
Maybe like this: Rooted .img 4.0.A.2.368 LT15i Generic Global

bukest said:
Maybe like this: Rooted .img 4.0.A.2.368 LT15i Generic Global
Click to expand...
Click to collapse
So just flash this using the fastboot?? have you tried it? will it work? anyway, will download and see...thanks.

kuailan said:
So just flash this using the fastboot?? have you tried it? will it work? anyway, will download and see...thanks.
Click to expand...
Click to collapse
No, I haven't. I have locked bootloader(yet). But read about it in some threads. Is this just an offer from me... Read the comments.

Ok finally after several research and try I find the following are the easiest method of getting root on the latest version (for people with unlock bootloader).
1. Flash using Flashtool any unrooted version 4 ROM
I used the following: http://forum.xda-developers.com/showthread.php?t=1209237
2. Switch off your phone, and boot into fastboot mode. How? When the phone is off, hold the menu button and connect the USB cable to the PC.
3. Using fastboot command, flash the boot image created by Doomlord. Here is the link: http://forum.xda-developers.com/showthread.php?t=1172885
4. Boot your phone, and enjoy the rooted ARC

Yes kuailan thats the same method I used. Its not just a rooted arc now, with setcpu app you can under/overclock it, and i dunno if any other addons.
Anyway, remind yourself and everyone that once its in that state, never do OTA update as doing that on a bootloader unlocked phone will result in bricked phone. Its recoverable, but requires additional effort. So there's the warning.

[Q] How to back up app data & settings without root and Ultimate Backup Tool?

Hi, everyone. I can't seem to find the solution for my prob, so I've to ask for ur knowledge on this.
Problem:
I'm using Xperia Arc with latest stock firmware without root. And I want to back up my app data & settings before resetting or flashing it.
Attempt:
I've tried Ultimate Backup Tool, but to no avail, just as mentioned in the Ultimate Backup Tool thread that there are known problem with Xperia Arc as one of the Sony 2011 devices.
I've looked through all the rooting methods for Xperia Arc, and I can't seem to find or perform a working root on the phone without flashing it. Naturally, Titanium Backup can't work as well.
Question:
So, what options do I have to back up the app data & settings now? And I'm looking that whether will a flash necessarily wipe the data on ur phone? Can I retain the data even after flashing the phone?
Really appreciate for ur help. Thx~ =)

SCC2002 said:
Hi, everyone. I can't seem to find the solution for my prob, so I've to ask for ur knowledge on this.
Problem:
I'm using Xperia Arc with latest stock firmware without root. And I want to back up my app data & settings before resetting or flashing it.
Attempt:
I've tried Ultimate Backup Tool, but to no avail, just as mentioned in the Ultimate Backup Tool thread that there are known problem with Xperia Arc as one of the Sony 2011 devices.
I've looked through all the rooting methods for Xperia Arc, and I can't seem to find or perform a working root on the phone without flashing it. Naturally, Titanium Backup can't work as well.
Question:
So, what options do I have to back up the app data & settings now? And I'm looking that whether will a flash necessarily wipe the data on ur phone? Can I retain the data even after flashing the phone?
Really appreciate for ur help. Thx~ =)
Click to expand...
Click to collapse
You can't, it's not possible to access and backup app data while your phone is not rooted. Are you on GB or ICS?
BTW, you don't have to flash your phone to root unless you have to downgrade. In the instance for ICS .587, I only need to flash the kernel of .562, root it via adb, then flash back the .587 kernel. This should not wipe your data.
http://forum.xda-developers.com/showthread.php?t=1061338
僕のLT18iから送られてきた

popthosegaskets said:
You can't, it's not possible to access and backup app data while your phone is not rooted. Are you on GB or ICS?
BTW, you don't have to flash your phone to root unless you have to downgrade. In the instance for ICS .587, I only need to flash the kernel of .562, root it via adb, then flash back the .587 kernel. This should not wipe your data.
http://forum.xda-developers.com/showthread.php?t=1061338
僕のLT18iから送られてきた
Click to expand...
Click to collapse
Thx a lot for ur reply. I'm on ICS .587 too. I was just afraid that flashing would wipe the data. And now this is clear.
Seems like this is the only option that I have, right? Btw, won't flashing it back to the latest firmware lose the root? Bcuz I used to have root, but I lost it when I updated my phone through official update methods. Or is that why I lost root?

SCC2002 said:
Thx a lot for ur reply. I'm on ICS .587 too. I was just afraid that flashing would wipe the data. And now this is clear.
Seems like this is the only option that I have, right? Btw, won't flashing it back to the latest firmware lose the root? Bcuz I used to have root, but I lost it when I updated my phone through official update methods. Or is that why I lost root?
Click to expand...
Click to collapse
You lose root from both flashing stock firmware and updating through official updating methods.... at least for locked boot loaders

SCC2002 said:
Thx a lot for ur reply. I'm on ICS .587 too. I was just afraid that flashing would wipe the data. And now this is clear.
Seems like this is the only option that I have, right? Btw, won't flashing it back to the latest firmware lose the root? Bcuz I used to have root, but I lost it when I updated my phone through official update methods. Or is that why I lost root?
Click to expand...
Click to collapse
Yes, flashing will lose your root, so does updating it via the official method. Flashing the entire ROM would wipe the data, but flashing the kernel does not.
僕のLT18iから送られてきた

jman2131 said:
You lose root from both flashing stock firmware and updating through official updating methods.... at least for locked boot loaders
Click to expand...
Click to collapse
popthosegaskets said:
Yes, flashing will lose your root, so does updating it via the official method. Flashing the entire ROM would wipe the data, but flashing the kernel does not.
僕のLT18iから送られてきた
Click to expand...
Click to collapse
Really? Then, what's the point of downgrade the firmware then upgrade again? Lol~
So, does that mean that with unlocked bootloader, I can keep root even after upgraded?

SCC2002 said:
Really? Then, what's the point of downgrade the firmware then upgrade again? Lol~
So, does that mean that with unlocked bootloader, I can keep root even after upgraded?
Click to expand...
Click to collapse
You can't root the latest firmware so you have to downgrade to root. You then upgrade by flashing the latest firmware's kernel which upgrades the firmware to the latest version and also keeps root status.
As for unlocked bootloaders, I can't comment because I have no experience with them
Sent from the work tab using Tapatalk

jman2131 said:
You can't root the latest firmware so you have to downgrade to root. You then upgrade by flashing the latest firmware's kernel which upgrades the firmware to the latest version and also keeps root status.
As for unlocked bootloaders, I can't comment because I have no experience with them
Sent from the work tab using Tapatalk
Click to expand...
Click to collapse
I think I got u wrongly before this. Lol. Bcuz you said that flashing it to the latest firmware will lose root. Or do you mean just stock firmware?
While for unlocked bootloader, can popthosegaskets or anyone else share the insight? Thx.

yep i meant flashing any stock ftf will make you lose root on locked bootloader

jman2131 said:
yep i meant flashing any stock ftf will make you lose root on locked bootloader
Click to expand...
Click to collapse
So that means that if I want to upgrade to a later firmware without losing root, I've to use a custom firmware?

SCC2002 said:
So that means that if I want to upgrade to a later firmware without losing root, I've to use a custom firmware?
Click to expand...
Click to collapse
Nope. You flash the kernel of the latest version of stock firmware. Here's an example
Sent from Xperia Arc S

ごめん~ごめん~
Sorry for the late reply
Anyways, I tried flashing the .587 kernel on my .562 stock. My firmware version still read .562, so I don't think flashing kernel will update firmware on unlocked bootloader.
As for rooting the latest firmware, you can update first, downgrade the kernel and root. You can keep data this way and get root.
僕のLT18iから送られてきた

popthosegaskets said:
ごめん~ごめん~
Sorry for the late reply
Anyways, I tried flashing the .587 kernel on my .562 stock. My firmware version still read .562, so I don't think flashing kernel will update firmware on unlocked bootloader.
僕のLT18iから送られてきた
Click to expand...
Click to collapse
it works for locked...at least for me lol

jman2131 said:
it works for locked...at least for me lol
Click to expand...
Click to collapse
Yeah, when you unlock bootloader, you also remove DRM keys that connect to Sony servers. So Track ID, Playnow and other Sony services won't work anymore. You also cannot use OTA updates as it will brick your phone.
僕のLT18iから送られてきた

jman2131 said:
Nope. You flash the kernel of the latest version of stock firmware. Here's an example
Sent from Xperia Arc S
Click to expand...
Click to collapse
But the one that u provided is Arc S kernel, mine is Arc. Not sure whether are they compatible...
popthosegaskets said:
ごめん~ごめん~
Sorry for the late reply
Anyways, I tried flashing the .587 kernel on my .562 stock. My firmware version still read .562, so I don't think flashing kernel will update firmware on unlocked bootloader.
As for rooting the latest firmware, you can update first, downgrade the kernel and root. You can keep data this way and get root.
僕のLT18iから送られてきた
Click to expand...
Click to collapse
Oh, it's alright~ Are u a Japanese? Lol. =P I see I see. Didn't know that firmware & kernel are different. Will try & see. Thx a lot~ ^^
jman2131 said:
it works for locked...at least for me lol
Click to expand...
Click to collapse
Alright~ Will try. Thx a bunch. ^^
popthosegaskets said:
Yeah, when you unlock bootloader, you also remove DRM keys that connect to Sony servers. So Track ID, Playnow and other Sony services won't work anymore. You also cannot use OTA updates as it will brick your phone.
僕のLT18iから送られてきた
Click to expand...
Click to collapse
Hmm~ I'm aware of that. But from first impression, it seems like they're not that important, since apps like Playnow are not useful. The only one that I use is TrackID, which I saw Sony published it on Play Store for public download. Sounds like it's fine to lose the DRM key too. Lol.

Arc S kernel and Arc kernel is different. Don't flash or it may cause problems.
I am Japanese but studying abroad.
僕のLT18iから送られてきた

popthosegaskets said:
Arc S kernel and Arc kernel is different. Don't flash or it may cause problems.
I am Japanese but studying abroad.
僕のLT18iから送られてきた
Click to expand...
Click to collapse
Wow, cool.

Is there any guide for me to flash the kernel? Is flashing custom kernel the same?

SCC2002 said:
Is there any guide for me to flash the kernel? Is flashing custom kernel the same?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1683957
Just follow the instructions and you should get root for latest firmware.
僕のLT18iから送られてきた
---------- Post added at 11:55 PM ---------- Previous post was at 11:52 PM ----------
SCC2002 said:
Is there any guide for me to flash the kernel? Is flashing custom kernel the same?
Click to expand...
Click to collapse
For flashing custom kernel, you need to unlock bootloader.
僕のLT18iから送られてきた

how to root .253 firmware?

hi I just flash new firmware .253 (c6506)
now how to root .253 ?same way like .434?

paullu said:
hi I just flash new firmware .253 (c6506)
now how to root .253 ?same way like .434?
Click to expand...
Click to collapse
Ur bootloader lock or unlock? Can u flash doomkernel v7? It has root feature for .253.
Sent from my BlackBerry 9900 using Tapatalk

If you want to keep drm and bravia backup TA partition before flashing that kernel. You can restore TA after that and get rooted 253 with bravia and drm.
At least that's what I read somewhere on.xda....

butatx said:
Ur bootloader lock or unlock? Can u flash doomkernel v7? It has root feature for .253.
Sent from my BlackBerry 9900 using Tapatalk
Click to expand...
Click to collapse
I have unloccked BL
can u show me link?

If u have unlocked ur bootloader just download kernel from this link http://forum.xda-developers.com/showthread.php?t=2230826 follow instruction as stated. Boot ur phone to recovery then select reboot, then it will request u to root.
Sent from my C6502 using Tapatalk 2

butatx said:
If u have unlocked ur bootloader just download kernel from this link http://forum.xda-developers.com/showthread.php?t=2230826 follow instruction as stated. Boot ur phone to recovery then select reboot, then it will request u to root.
Sent from my C6502 using Tapatalk 2
Click to expand...
Click to collapse
thank you for reply
but I still confused the link u show me is for kernel
is that include root and recovery in the zip?

Yes, I dont how doomlord do that. Here my story, I have flash .253 stock ftf and booted fine without root gain, then because of my hand itchy to try doomkernel, I flash the boot.img via flashtool (becoz stock kernel dont have recovery) then I enter recovery to ensure I successfully flash the boot.img file, upon rebooting it request to root ur phone.
But when I enter the recovery there are some error can not mount cache blablabla, I solve it by reflashing the stock. 253 xcluding kernel.
Sent from my C6502 using Tapatalk 2

paullu said:
thank you for reply
but I still confused the link u show me is for kernel
is that include root and recovery in the zip?
Click to expand...
Click to collapse
Yup, it includes both CMW recovery and root. The first time you put the boot.img using fastboot, during boot you need to enter recovery by pressing volume up button when DooMLoRD logo shows up, when you exit it will ask to root and just select yes. You should be rooted then

sturmtruppler said:
If you want to keep drm and bravia backup TA partition before flashing that kernel. You can restore TA after that and get rooted 253 with bravia and drm.
At least that's what I read somewhere on.xda....
Click to expand...
Click to collapse
How do I do that back up. I was running 253 rooted, but I losted drm and Bravia, so I moved back to 453.
I read something about that backup too, but did not said how to do that.
Do you know how?
Thanks a lot.
Ok. Founded how to backup TA.
http://forum.xda-developers.com/showthread.php?t=2234627

nX3NTY said:
Yup, it includes both CMW recovery and root. The first time you put the boot.img using fastboot, during boot you need to enter recovery by pressing volume up button when DooMLoRD logo shows up, when you exit it will ask to root and just select yes. You should be rooted then
Click to expand...
Click to collapse
I try to enter flashBoot model
I press volume up and connect usb with pc
but phone led light just got red and gone then no green light or some other color appear(I think when u in flashboot model there should be green light).
I think there is something wrong with it I can't enter fastboot model
edit:done I rooted using doomlord kernel
strange is don't need supersu any more??

paullu said:
I try to enter flashBoot model
I press volume up and connect usb with pc
but phone led light just got red and gone then no green light or some other color appear(I think when u in flashboot model there should be green light).
I think there is something wrong with it I can't enter fastboot model
edit:done I rooted using doomlord kernel
strange is don't need supersu any more??
Click to expand...
Click to collapse
Did you unlocked your bootloader?

Rodrigo Vilhena said:
Did you unlocked your bootloader?
Click to expand...
Click to collapse
Yes

paullu said:
Yes
Click to expand...
Click to collapse
Have you backup the TA partition?
Because I was reading and the method I founded, you need to be rooted to backup, and on FW 253, need to unolck BL to root.
So I don't think will be possible to do the Backup.
Here in Brazil, we did not have the 253 released, but I'll use the MEA 253 released.
I backup my TA from 434, and I'm thinking to restore that bckup on 253, what do you think?
Thanks a lot.
Edit:
One more question, you received update OTA, or get it on XDA like me?
I'd like to know if rootkeeper works here.
Some one have tested that?
Thanks.

Rodrigo Vilhena said:
Have you backup the TA partition?
Because I was reading and the method I founded, you need to be rooted to backup, and on FW 253, need to unolck BL to root.
So I don't think will be possible to do the Backup.
Here in Brazil, we did not have the 253 released, but I'll use the MEA 253 released.
I backup my TA from 434, and I'm thinking to restore that bckup on 253, what do you think?
Thanks a lot.
Edit:
One more question, you received update OTA, or get it on XDA like me?
I'd like to know if rootkeeper works here.
Some one have tested that?
Thanks.
Click to expand...
Click to collapse
I unlocked my BL first time when I got my phone c6506 usa version
I didn't backup my TA.and as I said I unlock bl so I can't get ota or via pc
I got .253 file from xda using flashtool .

Root the .434 using bin4ry's method and then download app called OTA Rootkeeper and do the OTA update. Should retain Root with no Issue and with the stock firmware.

Bricked X1C

Managed to brick my phone. It is now stuck on Sony logo and would not boot any further or go to recovery.
Would somebody be kind to help me resolve the issue?
Much appreciated!

kiza40 said:
Managed to brick my phone. It is now stuck on Sony logo and would not boot any further or go to recovery.
Would somebody be kind to help me resolve the issue?
Much appreciated!
Click to expand...
Click to collapse
Hold on Power & Up Volume button .. The phone will vibrate 3 times & shutdown.
Use Sony Update Service to Repair your firmware or Download any FTF & flash it via Flashtool
Good Luck!

shysparrow said:
Hold on Power & Up Volume button .. The phone will vibrate 3 times & shutdown.
Use Sony Update Service to Repair your firmware or Download any FTF & flash it via Flashtool
Thanks. What will happen to TA partition (DRM keys) if I use either option.
My phone was rooted, but with locked bootloader.
Click to expand...
Click to collapse

kiza40 said:
Thanks. What will happen to TA partition (DRM keys) if I use either option.
My phone was rooted, but with locked bootloader.
Click to expand...
Click to collapse
Don't worry abt it. Just restore using any one of the mentioned options.
Device will be fine.

shysparrow said:
Don't worry abt it. Just restore using any one of the mentioned options.
Device will be fine.
Click to expand...
Click to collapse
Thanks! Will try with SEUS first.

kiza40 said:
Thanks! Will try with SEUS first.
Click to expand...
Click to collapse
It is working after SEUS updae, but now I am stuck with unrooted KK. Can unrooting be done in KK or I will have to downgrade to JB first?
Thanks!

kiza40 said:
It is working after SEUS updae, but now I am stuck with unrooted KK. Can unrooting be done in KK or I will have to downgrade to JB first?
Thanks!
Click to expand...
Click to collapse
Better Downgrade to 4.3 if u need Root enabled mostly bug free device, Read this thread [Z1C-KK_4.4.2] 14.3.A.0.681 Update Changes/ Visible Bugs
or
to obtain Root on KK follow this thread :- [GUIDE] Update to KitKat with locked bootloader & root
Thanks @zxz0O0

shysparrow said:
Better Downgrade to 4.3 if u need Root enabled mostly bug free device, Read this thread [Z1C-KK_4.4.2] 14.3.A.0.681 Update Changes/ Visible Bugs
or
to obtain Root on KK follow this thread :- [GUIDE] Update to KitKat with locked bootloader & root
Thanks @zxz0O0
Click to expand...
Click to collapse
Thanks Shysparrow ! I am back to stock JB firmware and ready to root again.

shysparrow said:
Hold on Power & Up Volume button .. The phone will vibrate 3 times & shutdown.
Use Sony Update Service to Repair your firmware or Download any FTF & flash it via Flashtool
Good Luck!
Click to expand...
Click to collapse
Hi Sparrow, I was trying to get my Z1C back onto a stock ROM and I managed to that with the Sony PC Companion. Then I tried to flash KK (from http://www.mediafire.com/download/g1mahcm5y8cax2q/D5503_14.3.A.0.681_Generic+UK-nosystem.ftf) with flashtool but now my Z1C is stuck in a boot loop. I tried to use the Sony PC Companion to get it back to stock but now it says "There is no software available for your phone/tablet."
Do you have any suggestions?

Use Sony Update Service (SUS) to restore.

shysparrow said:
Use Sony Update Service (SUS) to restore.
Click to expand...
Click to collapse
Thanks for your reply. I managed to get it to work after flashing the file from http://forum.xda-developers.com/showthread.php?t=2687324 using flashtool. Cheers!

32.3.A.2.33 DRM Backup

With my last xperia cellphones (xperia Z1 and Xperia Z5) I didn´t mind about TA partition, but this time with the E6833 Dual, I´d like to have the chance of storing this partition. When I bought it it came with Marshmallow version but inmediatelly it began updating to 7.0.
I suppose I´m not the only one waiting for the new way of making a temporary root in order to save DRM.

Download flashtool and try to make a TA backup with that. If you cannot, you can always downgrade to MM again with it and then use the TA-backup at that time.

Hello downgrade to 5.1.1 with flasthool look my signature for link https://forum.xda-developers.com/crossdevice-dev/sony/iovyroot-temp-root-tool-t3349597

xrenoix said:
Hello downgrade to 5.1.1 with flasthool look my signature for link https://forum.xda-developers.com/crossdevice-dev/sony/iovyroot-temp-root-tool-t3349597
Click to expand...
Click to collapse
Hi there mate, just wanna ask....after i downgrade it then backup TA, unlock bl, then upgrade back to newest firmware,then root.after rooting,can i restore TA??? Sorry for the noob question,this is my 1st time doing this TA thing

@RyanVIII yes you can restore TA on 7.0 with root but if you restore stock firmware after the root not working for this moment on locked bootloader

Zur75 said:
With my last xperia cellphones (xperia Z1 and Xperia Z5) I didn´t mind about TA partition, but this time with the E6833 Dual, I´d like to have the chance of storing this partition. When I bought it it came with Marshmallow version but inmediatelly it began updating to 7.0.
I suppose I´m not the only one waiting for the new way of making a temporary root in order to save DRM.
Click to expand...
Click to collapse
Downgrade your device to Android 6.01 using CORRECT FIRMWARE
use FLASHTOOL
once your are on android 6.x.x
use DIRTYCOW SCRIPT to EXTRACT TA.IMG (drmkeys / TAimg)
https://forum.xda-developers.com/crossdevice-dev/sony/universal-dirtycow-based-ta-backup-t3514236

xrenoix said:
@RyanVIII yes you can restore TA on 7.0 with root but if you restore stock firmware after the root not working for this moment on locked bootloader
Click to expand...
Click to collapse
ooooo...ok thanks for the info...

YasuHamed said:
Downgrade your device to Android 6.01 using CORRECT FIRMWARE
use FLASHTOOL
once your are on android 6.x.x
use DIRTYCOW SCRIPT to EXTRACT TA.IMG (drmkeys / TAimg)
https://forum.xda-developers.com/crossdevice-dev/sony/universal-dirtycow-based-ta-backup-t3514236
Click to expand...
Click to collapse
How can I downgrade without loosing DRM keys? Thanks anyway!

Zur75 said:
How can I downgrade without loosing DRM keys? Thanks anyway!
Click to expand...
Click to collapse
only unlocking bootloader will make your keys lost,
use flashtool Xperifirm , select xperia X F512x, SUZU and select the android verison "store front" / this one is android 6.01 when the device left factory.
flash it
use dirtycow script to xtract TA.img
now can upgrade to 7.1.1 (again use xperifirm/flashtool)
NOW you can unlock your bootloader and flash kernel to have root access

YasuHamed said:
only unlocking bootloader will make your keys lost,
use flashtool Xperifirm , select xperia X F512x, SUZU and select the android verison "store front" / this one is android 6.01 when the device left factory.
flash it
use dirtycow script to xtract TA.img
now can upgrade to 7.1.1 (again use xperifirm/flashtool)
NOW you can unlock your bootloader and flash kernel to have root access
Click to expand...
Click to collapse
Thank you, YasuHamed, I'm sorry but I'm an ignorant about this topic, my question is: is it possible to downgrade my firmware without unlocking the bootloader, won't that brick the device?

Zur75 said:
Thank you, YasuHamed, I'm sorry but I'm an ignorant about this topic, my question is: is it possible to downgrade my firmware without unlocking the bootloader, won't that brick the device?
Click to expand...
Click to collapse
no it wont.
if you have CORRECT STOCK FIRMWARE of the device at hand (EVEN OUTDATED) and you flash it with FLASHTOOL
it wont brick!
but make sure to use FSC script for anytype of FLASHING , you can downgrade your SUZU to android 6 from 7 and then extract drm keys!