Develop Bugs

How can I root and flash a custom ROM?

My bootloader status says I can unlock it but my phone is on version 4.0.2.A.0.62 can someone give me a full guide on what I need to do please?
Thanks

cined said:
My bootloader status says I can unlock it but my phone is on version 4.0.2.A.0.62 can someone give me a full guide on what I need to do please?
Thanks
Click to expand...
Click to collapse
Unlock with normal method or testpoint (drm data keept)
Get root/cwm
Find your rom and fitting kernel
Flash.
If you just go first to general selection theres a lot fully made threads about unlocking and getting CWM. (on top, the pinned ones)
Then go to dev. selection so find your rom and follow the guide to flash
From my sexy LT15i

TheHaso said:
Unlock with normal method or testpoint (drm data keept)
Get root/cwm
Find your rom and fitting kernel
Flash.
If you just go first to general selection theres a lot fully made threads about unlocking and getting CWM. (on top, the pinned ones)
Then go to dev. selection so find your rom and follow the guide to flash
From my sexy LT15i
Click to expand...
Click to collapse
I'm struggling to find any guides. I only want to flash so I can get a ROM that has auto brightness turned off as on the stock ROM it's really annoying. Do I NEED to unlock my bootloader first?

Please could you break it down for me?
I'm so confused

You guys can't search? It's on stickies :/
Unlock bootloader:
http://forum.xda-developers.com/showthread.php?t=1551494
.42 downgrade .ftf img and then use zergrush exploit or pre-rooted ones
http://forum.xda-developers.com/showthread.php?t=1330314
Flash Custom Kernels and Roms:
http://forum.xda-developers.com/showthread.php?t=1508585

Here is a link where everything is explained:
http://www.theandroidsoul.com/how-to-root-xperia-arc/
If someone could verify that everything is correct, I'm French and I watch French tutorial
(Like this one: http://www.forummobiles.com/topic/241960-xperia-arc-arc-s-debrand-root-et-flash-de-baseband/)
EDIT : Retrosid is faster than me

no need to root dude if u want to install a custom ROM...just unlock the bootloader..flash a custom kernel and then flash the ROM..thats all..ROM will be pre-rooted..

In my phone settings it says my phone is LT18i does this matter for anything?

no tats just model number for arc s...
follow the method..
unlock
flash custom kernel
flash ROM
u r done!

cined said:
In my phone settings it says my phone is LT18i does this matter for anything?
Click to expand...
Click to collapse
You can change it back by editing build.prop if I remember well. It's nothing
Sent from my Xperia Arc

Retrosid said:
You can change it back by editing build.prop if I remember well. It's nothing
Sent from my Xperia Arc
Click to expand...
Click to collapse
I was just looking how to ... thank you!

arpith.fbi said:
no tats just model number for arc s...
follow the method..
unlock
flash custom kernel
flash ROM
u r done!
Click to expand...
Click to collapse
So I don't need to downgrade anything??
In those steps where do I flash CWM?

nope not required..this is the best short cut and time saving + safe...try it and let us know..
CWM is in custom kernel..u dont need to flash it seperately...

Just flash a kernel & you can use CWM to flash a rom

Thanks,
Do I just follow the steps in this link
http://unlockbootloader.sonymobile.com/
To unlock the bootloader?

yea..follow that..
All the best

I have now unlocked the bootloader
I now want to flash a custom ICS ROM, I now need to find a kernal to flash?
Thanks

yea...either stock ICS kernel or doom kernel for ICS beta..

arpith.fbi said:
yea...either stock ICS kernel or doom kernel for ICS beta..
Click to expand...
Click to collapse
Which ICS ROM Would you suggest? I just downloaded the Doom Kernel + Modules.
Thanks

I'm trying to flash the doomKernels boot.img in fastboot, I have put the ARC-DooMKernel-ICS-BETA-v04-lower-boot.img file in the platform-tools folder, I'm using the command fastboot flash boot ARC-DooMKernel-ICS-BETA-v04-lower-boot and it's saying it cannot load.
Any help please?
actually it says
'[ requirements ]
stock SE ICS Beta FW* (i havent tested on other ROMs so i cannot guarantee that it will work on them!)'
so I need to install stock firmware first?

[Help][UPDATE2]CWM and returning to stock

Hello everyone at XDA.
I currently have Cyanogenmod 7.2 on my Xperia Play. I used CWM to install Cyanogenmod. I installed CWM using the apk here. My Xperia Play is an r800a with unlocked bootloader.
I have 3 questions left to answer.
1.If I want to return to factory condition do I just flash the original .ftf file? Will this cause any problems to CWM? Will having CM7 then flashing a stock .ftf possibly cause any problems?
2.The thread that shows how to install CWM has a warning that says
Do NOT use this recovery if you are not in Stock 2.3 firmware.
Well right now I am on CM7.2 can I still use this recovery if I want to flash other roms like miui? What does this warning mean?
Here is the thread
3. Also if I need to is there anyway to remove CWM?
Thanks so much for any help.

Deleted

I know bumping is wrong but I made this into a new question and rather than posting a new message I edited it.
Any help would be greatly appreciated.

when u flash stock rom it should wipe everything - even recovery (im not sure). Flashing ftf file should give u phone like u had when u got it (but with unlocked bootloader if u did it)

ch3mn3y said:
when u flash stock rom it should wipe everything - even recovery (im not sure). Flashing ftf file should give u phone like u had when u got it (but with unlocked bootloader if u did it)
Click to expand...
Click to collapse
But won't already having CM7.2 cause any problems? Also won't have a custom kernel cause any problems?

when u flash stock rom ftf it overwrite kernel using stock contained in ftf file (kernel.sin)

RacecarBMW said:
But won't already having CM7.2 cause any problems? Also won't have a custom kernel cause any problems?
Click to expand...
Click to collapse
No. Flashing the ftf will wipe all traces of the custom kernel and any custom rom. It's like doing a factory refresh.
Sent from my R800x using XDA

Ok that's good to know. What about getting rid of CWM?

RacecarBMW said:
But won't already having CM7.2 cause any problems? Also won't have a custom kernel cause any problems?
Click to expand...
Click to collapse
Most Custom Kernels have Recovery In Built, Installing that Recovery wil cancel the Other one out No Value in That app If you have Custom Kernel

Xperia S Stock Firmware 6.1.A.2.55 Deodex Flashable Zip Root

Title should tell you all.
I made it to be easy to flash on unlock boot loader via CWM recovery. Just flash it like other custom ROM.
It also reported to work on Locked boot loader!!
- deodex framework and app
- remove few bloated app recommended by ROM kitchen
- busybox installed
- ready for init.d tweak
- ready for user app.
Installation test with SSpeed V7 normal kernel and Advanced Stock Kernel ICS16
It work on my Xperia s I hope it work on your as well.
https://hotfile.com/dl/180118347/fd5551c/LT26i_6.1.A.2.55_SG_Stock.zip.html
The goal of this ROM is a clean stock ROM but ready for mod easily by using just 7zip and notepad++
For example to get quick panel toggle just download the mod somewhere in xda then open the ROM with 7zip (do not extract) then replace systemui and add quick panel setting apk in the system folder. That is!!
You can also add your favor app in data/app to make it preinstall with your new ROM.
Have fun with modding and share your work.

Great Job.
TKS

I S is running. 45 with Advance kernel 16. Will I lost my games save if I flash this?
Sent from my LT26i

Can I flash it on top of stock 6.1.A.2.55?
Sent from my Xperia S using xda app

darkerm said:
I S is running. 45 with Advance kernel 16. Will I lost my games save if I flash this?
Sent from my LT26i
Click to expand...
Click to collapse
I think you can use titanium backup to backup your game data. Just to be safe please do binary backup of the whole system in CWM before you flash new firmware.
When I test on mine I always do a clean install to eliminate unforeseen problem. I wold recommend you do the same.

works for locked boot? : Confused:

Ok. Btw can you spot any difference in this new update?
Is battery life good?
Bravia engine and auto brightness working?
Sent from my LT26i

danytrial said:
works for locked boot? : Confused:
Click to expand...
Click to collapse
I thought I made it clear by state in the first post.
For the unlock boot loader.

Nepythys said:
Can I flash it on top of stock 6.1.A.2.55?
Sent from my Xperia S using xda app
Click to expand...
Click to collapse
If you have an unlocked boot loader and custom kernel like Sspeed kernel or Advance stock kernel.

tosa.th said:
If you have an unlocked boot loader and custom kernel like Sspeed kernel or Advance stock kernel.
Click to expand...
Click to collapse
tosa.th said:
I thought I made it clear by state in the first post.
For the unlock boot loader.
Click to expand...
Click to collapse
my bootloader is locked
and well i went ahead and flashed it (just to prove my theory) and it worked...
my previous rom was .50 rooted and had CWM installed also
i already had flashed .55 kernel and baseband only thing missing was .55 sys
i flashed this zip
it booted and phone is now finally fully .55 and rooted
only thing i had 2 reinstall was CWM because this zip doesnt have recovery in it
thanks! :good:
any chance of same rom with root but in original state (with root included ofc)?
i wont post my steps yet cause i think since this is a deodex rom we will have .odex files left over in sys partition (correct me if im wrong)
so please make a zip so i can test and u can then release for all us unlucky bootloader locked Xperia S users
cheers

tosa.th said:
If you have an unlocked boot loader and custom kernel like Sspeed kernel or Advance stock kernel.
Click to expand...
Click to collapse
Only for custom kernel, can't do with stock kernel and this CWM?
And I can flash it on all version firmware (.45, .50,...) or custom roms?

hhlong89 said:
Only for custom kernel, can't do with stock kernel and this CWM?
And I can flash it on all version firmware (.45, .50,...) or custom roms?
Click to expand...
Click to collapse
yes u can... read my previous post...
just remember 2 reinstall CWM after... this sys is deodex so id wait 4 a non deodexed zip 2 fully make it stock...
cheers

pcarvalho said:
my bootloader is locked
and well i went ahead and flashed it (just to prove my theory) and it worked...
my previous rom was .50 rooted and had CWM installed also
i already had flashed .55 kernel and baseband only thing missing was .55 sys
i flashed this zip
it booted and phone is now finally fully .55 and rooted
only thing i had 2 reinstall was CWM because this zip doesnt have recovery in it
thanks! :good:
any chance of same rom with root but in original state (with root included ofc)?
i wont post my steps yet cause i think since this is a deodex rom we will have .odex files left over in sys partition (correct me if im wrong)
so please make a zip so i can test and u can then release for all us unlucky bootloader locked Xperia S users
cheers
Click to expand...
Click to collapse
You can always relock it if needed... :cyclops:

donottouch said:
You can always relock it if needed... :cyclops:
Click to expand...
Click to collapse
i can not unlock it unless i take it to sony, my bootloader says unlock-able: NO

pcarvalho said:
yes u can... read my previous post...
just remember 2 reinstall CWM after... this sys is deodex so id wait 4 a non deodexed zip 2 fully make it stock...
cheers
Click to expand...
Click to collapse
It's a good news for someone who want to root .55 firmware easily, thanks you! :highfive:

hhlong89 said:
It's a good news for someone who want to root .55 firmware easily, thanks you! :highfive:
Click to expand...
Click to collapse
all we need now is the original sys with root and CWM included in a flashable zip
ive asked OP if he could do it in PM, lets wait and see

surprise......
Its work in Locked bootloader!!!!

hellonasty said:
surprise......
Its work in Locked bootloader!!!!
Click to expand...
Click to collapse
true! but we need it to be non deodex 2 be fully stock or else we have .odex files in system using up space...
cheers

I flash this in a locked bootloader and run well... but now when i connect with computer have an update from sony with new software 6.1.A.2.55 avaliable...
Possible?

hellonasty said:
I flash this in a locked bootloader and run well... but now when i connect with computer have an update from sony with new software 6.1.A.2.55 avaliable...
Possible?
Click to expand...
Click to collapse
no issue here...

[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

Cant flash "Newer" kernels

I flashed 4.1.A.0.562 and it went well after i rooted and was gonna flash to 4.1.B.0.587 it seems to go well i dont get any error on flashtool BUT when i go into setting and check Kernel it says im still on 4.1.A.0.562 and i have unlocked bootloader and im stuck now please help :^)

Just flash ICS Kernel..
Sent from my ST18i using XDA Free mobile app

TheRavenblue said:
I flashed 4.1.A.0.562 and it went well after i rooted and was gonna flash to 4.1.B.0.587 it seems to go well i dont get any error on flashtool BUT when i go into setting and check Kernel it says im still on 4.1.A.0.562 and i have unlocked bootloader and im stuck now please help :^)
Click to expand...
Click to collapse
flash stock ics ftf via this guide. also may dl latest version of ics there. it will flash alls stuff including kernel
http://talk.sonymobile.com/t5/Andro...y-Bean-ICS-Ice-Cream-Sandwich-and/td-p/154389

bejunk said:
flash stock ics ftf via this guide. also may dl latest version of ics there. it will flash alls stuff including kernel
Click to expand...
Click to collapse
Will i lose my root if i do that?

TheRavenblue said:
Will i lose my root if i do that?
Click to expand...
Click to collapse
yes. (& personal data also, so make backup) but root is a easy job (1min) you can root phone with ''e-root'' app. btw if u plan to use custom rom , then no need to root it all custom rom/kernel is prerooted....
if not you can extract kernel & try flashing i manually..

bejunk said:
yes. (& personal data also, so make backup) but root is a easy job (1min) you can root phone with ''e-root'' app. btw if u plan to use custom rom , then no need to root it all custom rom/kernel is prerooted....
if not you can extract kernel & try flashing i manually..
Click to expand...
Click to collapse
I tried using e-root once and i got rooted but after a while i couldnt root :/ it was succesfull (i think) but superuser never showed up.

TheRavenblue said:
I tried using e-root once and i got rooted but after a while i couldnt root :/ it was succesfull (i think) but superuser never showed up.
Click to expand...
Click to collapse
i think you need to install superuser manually afet rooting with e root. (from playstore)