Develop Bugs

[Q] How to backup my stock rom

I just got my Arc S, and i want to check out few different custom roms. I was planing on rooting the device with Easy rooting toolkit, so the question is, how can i backup my stock rom and reflash it, if i ever need it for warranty issues? (Also maybe to get the official 4.0 update next year )
On my previous phone (HTC Desire) it was pretty easy, by restoring the Nandroid backup that i created after rooting the device. How about the Xperia? Is there something similar?
And while we are here, any suggestion for some stable custom roms for the Arc S? Thanks

If you only want to root your device, you can simply unroot the device.
But you don't really have to, when you update your device using PCC or SEUS, the root is gone.
http://forum.xda-developers.com/showthread.php?p=18879974#post18879974
If you decide to unlock your bootloader to flash custom kernels/ROMs, you have to relock it, when you want to update your firmware using PCC or SEUS.
http://forum.xda-developers.com/showthread.php?t=1134335
And which custom ROM you like is your decision, but I'm still a CM7 fan.

I have root, if I want to return to stock ROM (without root) I can just use SEUS to update my phone and the root is gone?

hdplsa said:
I have root, if I want to return to stock ROM (without root) I can just use SEUS to update my phone and the root is gone?
Click to expand...
Click to collapse
If your bootloader is locked yes.

I rooted my arc with EasyRooting toolkit,
How do I know if my bootloader is locked or not?
Edit: I checked by the service info, it says
Rooting status:
Bootloader unlock allowed: No
I am guessing that means my bootloader is locked?

Aiceball said:
I am guessing that means my bootloader is locked?
Click to expand...
Click to collapse
Yes, it is.
And if you root, it doesn't, mean you've a unlocked BL.
Btw, you can't unlock your BL using the official method.
If you still want to unlock your BL, contact Jinx13.

[Q] nandroid custom rom unlock BL to Backup locked Bootloader

Hi guys,
at the moment i use my xperia s with the xtx7 rom on locked bootloader because i want to have the bravia engine back.
Now i want to flash an other rom using an unlocked bootloader. But before i have backed up my xtx7 rom using online nandroid backup.
My question is now. Is there any way to use the backup when i am on the rom with the unlocked bootloader to get back to my xtx rom with locked bootloader?
Sorry for my bad english
Okay i cant do a backup with locked bootloader ... the app cannot acquire root permission... but the pop up from supersu for granting root access works ...

Moved to Q&A

Updating a rooted phone 4.2.2

Hello guys,
Just have a quick question I am on stock sony android 4.2.2 rooted with a locked bootloader,
I was wondering now that 4.3 is out and I use flash tool to flash the new 4.3 would that cause any issues? I know I would lose my root (is there any way to save it) or can i just flash the new update with no issues.

jafferman said:
Hello guys,
Just have a quick question I am on stock sony android 4.2.2 rooted with a locked bootloader,
I was wondering now that 4.3 is out and I use flash tool to flash the new 4.3 would that cause any issues? I know I would lose my root (is there any way to save it) or can i just flash the new update with no issues.
Click to expand...
Click to collapse
If you flash the FTF using flashtool it will wipe the phone completely and obviously root will be gone. AFAIK the only way to root 4.3 right now is with an unlocked bootloader. You may want to try to update without wiping, it might preserve root. The update still hasn't rolled for the C6506 so I'm unable to try anything.

Can i update to lillipop while i'm rooted

I Rooted My T2 Ultra Dual Using This Thread
http://forum.xda-developers.com/t2-ultra/general/root-t2882924
and everything is okay
Now I'm Receiving The New Lollipop Update On My Phone
Can I Update From Kitkat 4.4.3 To Lollipop While I'm Still Rooted
Or Do I have To Unroot First
If I Have To Unroot First Please I Need help about Unrooting My Device
and I think the way i rooted didn't unlock my bootloader and i have a locked boot loader
Thanks In Advance

[Q] [Help] Root lollipop & backup TA [Z1c]

hello guys. i just got these beautiful Z1 Compact last week. it's on lollipop 5.0.2, build number 14.5.A.0.270 and i want to root it, backup my drm keys, and keep X-Reality, camera quality, and all the other Sony stuff.
i've been reading the xda xperia forums, and it seems there exists a paradox when it comes to making a TA backup on lollipop (but correct me if i am wrong):
you need to unlock the bootloader in order to root the phone, in order to backup TA. But since by then i will have already unlocked the BL, my drm keys will be already deleted, because unlocking the BL causes that. kitkat users can root without BLU, though. So i've come here with the following questions:
1) is there a way to safely root a Z1c on 5.0.2, without BLU?
2)if not then, it has occured to me that i could first downgrade to KK, then root, backup TA , and finally flash a 5.0.2 PRF on top of rooted KK. is all this actually possible? how can i downgrade to KK (it is the only step i dont know how to do)??
3) is it possible to dirty flash the same firmware on top of one another, maintaining the bootloader unlocked? ( create a .270 prf and flash it on top of a non-rooted .270 fw?)

tenjou_89 said:
hello guys. i just got these beautiful Z1 Compact last week. it's on lollipop 5.0.2, build number 14.5.A.0.270 and i want to root it, backup my drm keys, and keep X-Reality, camera quality, and all the other Sony stuff.
i've been reading the xda xperia forums, and it seems there exists a paradox when it comes to making a TA backup on lollipop (but correct me if i am wrong):
you need to unlock the bootloader in order to root the phone, in order to backup TA. But since by then i will have already unlocked the BL, my drm keys will be already deleted, because unlocking the BL causes that. kitkat users can root without BLU, though. So i've come here with the following questions:
1) is there a way to safely root a Z1c on 5.0.2, without BLU?
2)if not then, it has occured to me that i could first downgrade to KK, then root, backup TA , and finally flash a 5.0.2 PRF on top of rooted KK. is all this actually possible? how can i downgrade to KK (it is the only step i dont know how to do)??
3) is it possible to dirty flash the same firmware on top of one another, maintaining the bootloader unlocked? ( create a .270 prf and flash it on top of a non-rooted .270 fw?)
Click to expand...
Click to collapse
The step number 2 is the only method for now for rooting with locked bootloader. To downgrade, You simply flash a Kitkat .108 FTF via flashtool. Do take backup first though.
As for third step, it is possible to do dirty flash, but to flash You need recovery and for recovery You need root, so in a way You cannot flash PRF on non-rooted .270 FW.