Develop Bugs

[Q] [Question] How do I load back stock firmware from CM7.1 on Xperia play

Well the title basically says it all.. I upgraded to cm7.1 on my play and it's awesome and all but some games don't work with the touchpads and the I lost the ps games function.. I was thinking about flashing back to stock firmware but flashtools doesn't work. any idea how I should go about this?

unless you backed up your NAND of the stock firmware, there's not really an easy way to get back without flashtool

Thanks.. I forgot to perform NANDROID backup :s you think i can fastboot??

You could try extracting the system.sin from the stock FTF (with winRAR or similar) then do "fastboot flash system system.sin". And if you want the stock kernel, extract kernel.sin and do "fastboot flash boot kernel.sin", or flash DooMKerneL which I find is vastly superior to a stock kernel

jacklebott said:
or flash DooMKerneL which I find is vastly superior to a stock kernel
Click to expand...
Click to collapse
Is there any benefit to flash that kernel if intending to use stock speed at 1Ghz and not going go change roms or anything (besides being able to do nandroid)?

dannejanne said:
Is there any benefit to flash that kernel if intending to use stock speed at 1Ghz and not going go change roms or anything (besides being able to do nandroid)?
Click to expand...
Click to collapse
I only use 1ghz on it, and it's still far faster than stock

jacklebott said:
I only use 1ghz on it, and it's still far faster than stock
Click to expand...
Click to collapse
Ok thanks. I'll think about it. Unlocking the bootloader wipes the data folder only, right?

dannejanne said:
Ok thanks. I'll think about it. Unlocking the bootloader wipes the data folder only, right?
Click to expand...
Click to collapse
I believe so, I just wish I knew that when I unlocked mine :|

jacklebott said:
I believe so, I just wish I knew that when I unlocked mine :|
Click to expand...
Click to collapse
Hehe. Good thing to have titanium

[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

[Q] flash ta backup while bootloader unlocked?

will bravia engine work with this?
i was on 6.2.b.1.96 xs 4.1.2 rooted
then i took TA Backup.
now today i unlocked bootloader for the first tym (DRM keys preserverd in TA backup.)
now if i restore my TA backup while the bootloader unlocked, then will it restore drm keys and will bravia engine work?
m nt trying it because m afraid of bricking the phone.( just recovered from a soft brick yesterday). has anyone tried?

yes surely mate ...go ahead with restore....it will restore ur DRM keys and bravia engine will work as it was at the time of backup...
recommend to do this on stock firmware on which u had taken the TA backup....Hope this helps...

mohit378 said:
yes surely mate ...go ahead with restore....it will restore ur DRM keys and bravia engine will work as it was at the time of backup...
recommend to do this on stock firmware on which u had taken the TA backup....Hope this helps...
Click to expand...
Click to collapse
but dont it look weird, unlocked bootloader and drm keys working together? i didnt read anything like that on internet. can u quote any such link?

when u restore ur TA BACKUP it will restore ur DRM keys and bravia engine & ur BOOTLOADERS will get locked again....u have to unlock it again for custom kernel flashing...
so just flash stock firmware first on which u had taken TA backup and then restore it.... if you're using a custom kernel, you'll brick the phone.......so u must be on stock firmware first before restoration process...hope this helps...

Just to add since you just recovered from a soft brick.
If you restored your TA while using a custom kernel, you will hardbrick your phone which I believe is unrecoverable...

intoxic8 said:
Just to add since you just recovered from a soft brick.
If you restored your TA while using a custom kernel, you will hardbrick your phone which I believe is unrecoverable...
Click to expand...
Click to collapse
Can you please explain the reason behind it?

[Q] Root firmware .101

Hi guys... i need root mi ZL whit firmware 10.4.1.B.0.101 but not as... i need help
Sorry for my bad bad english :crying:

You have two options
1. unlock your bootloader and flash root(warranty, DRM keys lost)
2. downgrade to 4.2.2 firmware
backup TA partition then flash a 4.3 pre-rooted stock rom
lastly restore TA partition(must be stock kernel)
stock rooted phone with warranty and DRM keys
If you don't care about the warranty, I'll suggest just go with option 1, since option 2 might be time consuming.
Option 2 is always better. Who knows when your phone is going to break.

GoHelll said:
Hi guys... i need root mi ZL whit firmware 10.4.1.B.0.101 but not as... i need help
Sorry for my bad bad english :crying:
Click to expand...
Click to collapse
you will need to downgrade to 4.2.2 firmware,root it,install custom recovery then flash a pre-rooted 4.3 rom

adam1liukuro said:
You have two options
1. unlock your bootloader and flash root(warranty, DRM keys lost)
2. downgrade to 4.2.2 firmware
backup TA partition then flash a 4.3 pre-rooted stock rom
lastly restore TA partition(must be stock kernel)
stock rooted phone with warranty and DRM keys
If you don't care about the warranty, I'll suggest just go with option 1, since option 2 might be time consuming.
Option 2 is always better. Who knows when your phone is going to break.
Click to expand...
Click to collapse
what is TA partition AND HOW TO BACKUP TA PARTITION ???????????????/

rameshkotibani said:
what is TA partition AND HOW TO BACKUP TA PARTITION ???????????????/
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2292598

adam1liukuro said:
You have two options
1. unlock your bootloader and flash root(warranty, DRM keys lost)
2. downgrade to 4.2.2 firmware
backup TA partition then flash a 4.3 pre-rooted stock rom
lastly restore TA partition(must be stock kernel)
stock rooted phone with warranty and DRM keys
If you don't care about the warranty, I'll suggest just go with option 1, since option 2 might be time consuming.
Option 2 is always better. Who knows when your phone is going to break.
Click to expand...
Click to collapse
Ben Ling said:
you will need to downgrade to 4.2.2 firmware,root it,install custom recovery then flash a pre-rooted 4.3 rom
Click to expand...
Click to collapse
Not the OP, but am trying to figure out how to do this. All the root threads are a year old, so I want to make sure I have my facts straight before messing anything up. I have a C6506, US Generic but I don't want to lose my DRM keys or Warranty for resale reasons, so am trying to do this the "locked bootloader" way.
1) Downgrade to 4.2.2 firmware. Do I do this with Flashtool? This doesn't require unlocking the bootloader?
2) Root it .. Doomlord method? The Flashtool website says it can "root", too, but it offers no details on which method. What's the best way to go?
3) Install custom recovery. Which one? I see Nut's thread all talk about a dual recovery, but is that necessary? Can I install just one?
4) Is there a pre-rooted 101 for the C6506 US Generic? I can't seem to find one...

deleted (doesn't work with .101)

CokeJunkee said:
If you're on .67 or .101 firmware, just flash the .423 kernel via Flashtool.
Because it is a Sony stock kernel, you do not need to unlock the bootloader for this step.
When flashing is done, close Flashtool and reboot your phone.
Enable 'unknown sources' (found in security settings) and 'usb debugging' (found in developer options).
Now use Doomlord's method to root.
When rooting is done, it's time to install a recovery to your device.
If your're going to use a custom rom based on Sonys stock fw (like ExistenZ and RomAur), I strongly recommend using [NUT]'s dualrecovery.
AOSP roms (CyanogenMod, P.A.C., Omni, etc.) bring their own cwm recovery.
After root and recovery, turn off the phone and flash either .67 or .101 kernel, corresponding to your firmware.
Now it's time to backup the TA partition.
Click to expand...
Click to collapse
This is extremely helpful - thank you for providing links. I am wondering why this is so different from the method laid out here:
http://forum.xda-developers.com/showpost.php?p=51612704&postcount=12&nocache=1
Seems like your version is much easier, so I wonder why someone would go through all that trouble for the same result...
Also, won't I lose root once I flash the .101 kernel? Do I get it back using recovery?
Also also: the kernels linked above are for C6503 and C6502. Can I use the full FTF files for C6506 and just deselect flashing everything expect Kernel? It looks to be the same files, except that rpm.sin is included in the full files and not in the kernel FTFs.

when i flash a .423 kernel i got bootloops, am i doing something wrong?
after flashing back the .101 it boots normal

relock bootloader E6883？

who can give me a guide to relock back My bootloader to My z5 premium E6883？
im not see flash tool have E6883 model to relock...tq

See:
https://forum.xda-developers.com/z5-premium/help/xperia-z5-premium-dual-e6883-help-t3353950

pandan80 said:
who can give me a guide to relock back My bootloader to My z5 premium E6883？
im not see flash tool have E6883 model to relock...tq
Click to expand...
Click to collapse
why do u want to relock? do u have DRM KEYS/TA.IMG backed up somewhere in your pc ? to restore?
anways
with flashtool you can relock it and then unlock it again!
keep the original unlock key with you (just in case) or you can always ask sony for the keys

YasuHamed said:
why do u want to relock? do u have DRM KEYS/TA.IMG backed up somewhere in your pc ? to restore?
anways
with flashtool you can relock it and then unlock it again!
keep the original unlock key with you (just in case) or you can always ask sony for the keys
Click to expand...
Click to collapse
Hey, I want to put my Sony Z5 premium back to all factory to sell it, can you give me the steps to do that?

EMJI79 said:
Hey, I want to put my Sony Z5 premium back to all factory to sell it, can you give me the steps to do that?
Click to expand...
Click to collapse
if the bootloader has been unlocked it can never be fully restored. you can never lock the bootloader the way sony did.
All you can do is to wipe and flash untouched stockrom and sell it
for flashing use flashtool / fastboot modes. you can do google for tutorial. its easy.

What about drm?

EMJI79 said:
What about drm?
Click to expand...
Click to collapse
if you never took backup of your DRM then they are lost too! if you have taken backup then restore them manual. but whenever the buyer flash the device the keys will be lost too.

I have backed them up with TA backup

EMJI79 said:
I have backed them up with TA backup
Click to expand...
Click to collapse
then relock your bootloader and sell it off. if the new owner don't change anything then the keys will stay intact.
however, if you could guide the new owner about it and email them the keys also , it will be fair deal
because you cannot use these keys on any other device.

Should I lock the bootloader first or restore TA first?
Anyone?

Answer: restoring TA automatically locks Bootloader.
But it needs root, so first restoring TA then flashing stock ROM with Flashtool.