Develop Bugs

[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] Rogers xperia arc

Hi every one I have rogers arc running on the latest ice rooted Bootloader was locked. I did bootloader unlock with test point.The flash tool saying that bootloader is rooted but I cannot flash any custom rom or even a backup I usually can't pass Sony screen any input is appreciated.

zaky1 said:
Hi every one I have rogers arc running on the latest ice rooted Bootloader was locked. I did bootloader unlock with test point.The flash tool saying that bootloader is rooted but I cannot flash any custom rom or even a backup I usually can't pass Sony screen any input is appreciated.
Click to expand...
Click to collapse
Just use flashtool to flash the rom again man, i think u should flash the stock rom firs
If it's ok, then flash your custom rom

I am running the official rom no problem it's not allowing me to flash any custom roms in the recovery mod. I cam reboot to recovery either by x-part or holding the menu key while it start.:crying:

zaky1 said:
I am running the official rom no problem it's not allowing me to flash any custom roms in the recovery mod. I cam reboot to recovery either by x-part or holding the menu key while it start.:crying:
Click to expand...
Click to collapse
I think u need to unlock ur bootloader first
If not, try to find rom that can use with locked bootloader
Sent from my Xperia Arc S using xda premium

My bootloader is rooted with Test point method

zaky1 said:
My bootloader is rooted with Test point method
Click to expand...
Click to collapse
You unlock your boot loader with the test point, not root. So please be clear about what you've actually done.
Sent from my CM9'd Arc

Yes I unlocked my bootloader with test point ***but on service menu still say no** but on flashtool was saying bootloader unlocked B4 i did the test point and after it say bootloader is rooted

Have you flashed the kernel?

Which kernel Iam running the offecial kernel

zaky1 said:
Which kernel Iam running the offecial kernel
Click to expand...
Click to collapse
If you want to use a custom ROM then 9 times out of 10 you'll need to use a specific kernel, usually one that comes with CWM.

I know exactly how to flash custom rom, I am coming from MT4G the problem after you flash the rom the phone dosn't boot in recovery it just stay at sony logo, even when i try to boot in fastboot mod dosn't allow me only booting in recovery.

zaky1 said:
I know exactly how to flash custom rom, I am coming from MT4G the problem after you flash the rom the phone dosn't boot in recovery it just stay at sony logo, even when i try to boot in fastboot mod dosn't allow me only booting in recovery.
Click to expand...
Click to collapse
Try this....
1. Flash ur stock ICS firmware 4.1.B.431 ... 2. Don't let it upgrade to the latest firmware (in Canada I got N update that changed my firmware to 4.1.**.587 or something like that)
3. Then flash ur phone with the rootable firmware of xperia generic world version...
4. Flash the kernels for that firmware .. even the stock ICS would be OK..
5. Root the phone using Doomlords method of rooting... Its the best...!
6. At last reboot ur phone ..n violaaa...
U have a completely rooted phone ..!
P.s. make sure u see the log while u root ur phone . It may say rooted successly even if it had some errors... so make sure other are no errors..!
I had the same problem when I decided to unlock boot loader n root it for the first time ... so no worries my friend ...try this .. n it will work for sure.. !
Sent from my Xperia Arc using xda app-developers app
Did u hit the thanks button ? :thumbup:

Hi my friends thanks for the reply but my phone is already rooted and i can go to recovery mod even i did the trick of link2sd which increased my internal memory I am running the north america firmware not Rogers firmware

What Kernel and ROM !?

rom 4.1.b.0.587 kernel official

zaky1 said:
Hi my friends thanks for the reply but my phone is already rooted and i can go to recovery mod even i did the trick of link2sd which increased my internal memory I am running the north america firmware not Rogers firmware
Click to expand...
Click to collapse
I know ur phone is rooted ..but if u try again ..with the world firmware ..it will b rooted perfectly n won't stuck on boot..!
Sent from Xperia arc ..XDA premium app..
dont foget to hit the thanks button

I will Give it a try and let you know. Thanks man

Would u mind if i ask u something...!! dnt b offended..!! I know u might hav already done this ..but stil ..!!
1. If u r flashing the custom rom with flashtool right .?? and while doing tht are u pressing the back key ...or the menu key of ur phone .??
2. If u havent flashed any custom rom untill yet..n still on north america firmware.. then try to re-root it ...and then install CMW via this link..!!
https://www.dropbox.com/sh/ohrj5dosijil1od/t_3-MoTVc6
read the recovery.txt file...it shows how to install the cmw...!! n then try to flash a custom rom via CWM ...n lemme know..!!!
cheers..!!
did u hit the thanks button yet.?? :laugh::good:

I think you can't flash custom rom from flash tool it must be flashed from you sd card because it is a zip file. I tried to flash recovery mode you supplied the link with no go.

So u did root and installed cwm by the link I gave right ?
N it showed that .. installation complete.. ?
N now ..the problem is ..
that u cannot enter recovery mode
To flash a custom ROM ?
Am I right ?
Sent from Xperia arc ..XDA premium app..
dont foget to hit the thanks button

[Q] CWM Recovery for .200 JB Stock ROM

Before i flash this kernel:
http://forum.xda-developers.com/showthread.php?t=2302393
I just want to make sure that flashing this kernel will bring the cmw recovery i need to flash custom roms to my xperia s with jelly ben stock rom .200.
At the moment my xperia s ist unlocked and rooted.
What i don´t know, is it possible to flahs via flashtool any older rom with flashtool as tft-file. does it contain the older kernel ?

look
Bastler1 said:
Before i flash this kernel:
http://forum.xda-developers.com/showthread.php?t=2302393
I just want to make sure that flashing this kernel will bring the cmw recovery i need to flash custom roms to my xperia s with jelly ben stock rom .200.
At the moment my xperia s ist unlocked and rooted.
What i don´t know, is it possible to flahs via flashtool any older rom with flashtool as tft-file. does it contain the older kernel ?
Click to expand...
Click to collapse
notes
you cant flash a ICS kernel for a JB ROM , or the other way around
you can how ever flash any JB kernel on any JB rom , so long as they are from the same source e.g. sony rom + sony kernel
sony kernel + cm rom = no
ENSURE THAT YOUR BOOTLOADER IS UNLOCKED

I thought that CWM-Based Recovery 6.0.3.2 for Xperia S {Official JB firmware} is a jb kernel.

Bastler1 said:
I thought that CWM-Based Recovery 6.0.3.2 for Xperia S {Official JB firmware} is a jb kernel.
Click to expand...
Click to collapse
It is.

Ah.
Just reading a lot´s of webpages in the meantime and found another way to get the cwm.
i have downloaded the ROM MANGER Free version in the market. This programm should create cwm recovery i need. - just waiting for a charged battery. tell you soon if it works.

Careful. Those apps are not 100% safe to trust.

You should flash the kernel or recovery using fastboot instead. Its the best way to go about it. Make sure you can connect to your device using fastboot. Would save you a lot of troubles and time in the future.

malcohmx said:
You should flash the kernel or recovery using fastboot instead. Its the best way to go about it. Make sure you can connect to your device using fastboot. Would save you a lot of troubles and time in the future.
Click to expand...
Click to collapse
I did it like this whit the older version v1 in it worked fine. in the rom manager the xperia s is missing - and not necessary
thanks for all hints and advices.

help my xperia play is stuck at the sony ericcson boot logo!!!

hey everyone im a noob at all this custom rom stuff i managed to root and flash a custom 2.3.7 next bean rom on my play using clock work mod recovery but then i decided to flash an xda ice cream speed rom i wiped all data and caches flashed the ice cream speed rom but on bootup my phone gets stuck at sony ericcson boot logo i dont think my phone is bricked because the led still flashes Green when i go into flashmode the problem is i can no longer get into recovery mode my bootloader is not unlocked but i dont think that matters because i was able to flash the next bean rom and it worked fine. i have already tried the pc companion fix wich doesnt work because it says there is no available update for my device i have also tried flashtool but since the phone is in bootloop it doesnt recognize my device i would really appreciate all the help i can get here thanx in advance guys!!!

xplay1 said:
hey everyone im a noob at all this custom rom stuff i managed to root and flash a custom 2.3.7 next bean rom on my play using clock work mod recovery but then i decided to flash an xda ice cream speed rom i wiped all data and caches flashed the ice cream speed rom but on bootup my phone gets stuck at sony ericcson boot logo i dont think my phone is bricked because the led still flashes Green when i go into flashmode the problem is i can no longer get into recovery mode my bootloader is not unlocked but i dont think that matters because i was able to flash the next bean rom and it worked fine. i have already tried the pc companion fix wich doesnt work because it says there is no available update for my device i have also tried flashtool but since the phone is in bootloop it doesnt recognize my device i would really appreciate all the help i can get here thanx in advance guys!!!
Click to expand...
Click to collapse
It is because u flashed an ICS ROM on GB kernel
For flash mode : Pull out ur battery then press and hold back button and plug in USB(power led should turn to green) then flash an stock firmware
Sent from my Xperia Play using xda premium

raminta said:
It is because u flashed an ICS ROM on GB kernel
For flash mode : Pull out ur battery then press and hold back button and plug in USB(power led should turn to green) then flash an stock firmware
Sent from my Xperia Play using xda premium[/
yes you are correct i just flashed the stock firmware and it booted back up just fine i also went ahead and rooted my phone again all i need to do is install cwm recovery again so i can flash a kernel on their that supports ICS roms. can you please tell me what kernels are best for an ICS rom thinking that ice cream speed is best if you coud help me out with the procedures to flash a rom and kernel for best gaming and good everyday use pliz? :good:
Click to expand...
Click to collapse

xplay1 said:
raminta said:
It is because u flashed an ICS ROM on GB kernel
For flash mode : Pull out ur battery then press and hold back button and plug in USB(power led should turn to green) then flash an stock firmware
Sent from my Xperia Play using xda premium[/
yes you are correct i just flashed the stock firmware and it booted back up just fine i also went ahead and rooted my phone again all i need to do is install cwm recovery again so i can flash a kernel on their that supports ICS roms. can you please tell me what kernels are best for an ICS rom thinking that ice cream speed is best if you coud help me out with the procedures to flash a rom and kernel for best gaming and good everyday use pliz? :good:
Click to expand...
Click to collapse
u cannot flash a kernel with recovery
and u said that u have locked bootloader so u should unlock ur bootloader first then flash kernel with fastboot
to go to fastboot u should turn off ur phone then press and hold search button and plug in USB(power led shoult turn to blue)
you can find guides that u may need here : http://forum.xda-developers.com/showthread.php?t=2184897
and for kernel u can use lupus gb+ics kernel : http://forum.xda-developers.com/showthread.php?t=2167766
Click to expand...
Click to collapse

ICS rom
xplay1 said:
raminta said:
It is because u flashed an ICS ROM on GB kernel
For flash mode : Pull out ur battery then press and hold back button and plug in USB(power led should turn to green) then flash an stock firmware
Sent from my Xperia Play using xda premium[/
yes you are correct i just flashed the stock firmware and it booted back up just fine i also went ahead and rooted my phone again all i need to do is install cwm recovery again so i can flash a kernel on their that supports ICS roms. can you please tell me what kernels are best for an ICS rom thinking that ice cream speed is best if you coud help me out with the procedures to flash a rom and kernel for best gaming and good everyday use pliz? :good:
Click to expand...
Click to collapse
Raminta is correct. The reason that you don't have any issue on the gb rom is because the kernel installed on your phone(locked bootloader) is compatible on the rom and the rom might be mod to work for locked bootloaders.
But the thing on the ICS rom is that you will need to flash a ICS kernel. You can only flash a kernel once you already unlocked the bootloader of your phone.
Click to expand...
Click to collapse

[Q] Help and idiot out? ARC S Flashing

Hello,
I would like to do the following to my Arc S.
Flash new recovery
Flash new kernel (fusion)
Flash SJB latest version (7 i think)
I have been going arround the forums for 2 days now trying to figure it out but have been unable to do so.
The steps i need help with are as follows:
Where do i get recovery image for my ARC S?
i understand that using fastboot to flash it onto phone is rather easy.
As i understand after i get new recovery i can flash kernel and new rom from recovery mode?
How do i revert to android 2.3.4 4.0.2.A.0.62 if i dont like new rom / kernel?
GREAT BIG THANKS!

AshrakTheWhite said:
Hello,
I would like to do the following to my Arc S.
Flash new recovery
Flash new kernel (fusion)
Flash SJB latest version (7 i think)
I have been going arround the forums for 2 days now trying to figure it out but have been unable to do so.
The steps i need help with are as follows:
Where do i get recovery image for my ARC S?
i understand that using fastboot to flash it onto phone is rather easy.
As i understand after i get new recovery i can flash kernel and new rom from recovery mode?
How do i revert to android 2.3.4 4.0.2.A.0.62 if i dont like new rom / kernel?
GREAT BIG THANKS!
Click to expand...
Click to collapse
First of all you have to unlock the bootloader and you have to be on ICS
Then you can flash the kernel[with flashtool].
after flashing the kernel u can enter the recovery by presing the volume down buton until it brings you to cwm.
and the follow the instruction for instaling the rom
Good luck

theanelfro said:
First of all you have to unlock the bootloader and you have to be on ICS
Then you can flash the kernel[with flashtool].
after flashing the kernel u can enter the recovery by presing the volume down buton until it brings you to cwm.
and the follow the instruction for instaling the rom
Good luck
Click to expand...
Click to collapse
Thanks for answer.
If my bootloader is "unlock available: yes" is that ok?
Will the fusion kernel 5.4 work with default rom's ? like GB 2.3?
how do i revert to stock kernel after flashing fusion? Emma?
Is recovery stored on a seperate partition that is not the rom / system partition? so i will always have recovery available?
Thank you!

AshrakTheWhite said:
Thanks for answer.
If my bootloader is "unlock available: yes" is that ok?
Will the fusion kernel 5.4 work with default rom's ? like GB 2.3?
how do i revert to stock kernel after flashing fusion? Emma?
Is recovery stored on a seperate partition that is not the rom / system partition? so i will always have recovery available?
Thank you!
Click to expand...
Click to collapse
Yes it is, but you must unlock it.[search in the forum]
fusion is for jelly bean roms, not for GB so far i know,.
if you want to revert to from ICS to GB you just have to flash the ftf.file from gb .62
if you have any problem tell me i will try to help you.
press thanks if i helped you!
Here is step by step how to unlock it

AshrakTheWhite said:
Thanks for answer.
If my bootloader is "unlock available: yes" is that ok?
Will the fusion kernel 5.4 work with default rom's ? like GB 2.3?
how do i revert to stock kernel after flashing fusion? Emma?
Is recovery stored on a seperate partition that is not the rom / system partition? so i will always have recovery available?
Thank you!
Click to expand...
Click to collapse
Bootloader can be unlocked
No. Fusion works with only custom JB ROM. For stock ROM use stock kernel.
You can use EMMA or Flashtool to flash an FTF file. Note that this will wipe your personal data.
No. The recovery that you're using now can either be stored on /system partition or merged with kernel. The one stored in /system requires root before you can install it.
僕のLT18iから送られてきた

Hey i got it done! i love sjb 7 its sick fast!
I first unlocked bootloader, after which the phone would no longer go past SE logo ( i had installed CWM for default rom and bootlocker blew up the kernel probobly)
after which i flashed Fusion 5.4 with fastboot
and then i applied SJB from SD card.
I did not think it would be that easy. it was.
Thanks to all and everyone who posted here got a Thanks

AshrakTheWhite said:
Hey i got it done! i love sjb 7 its sick fast!
I first unlocked bootloader, after which the phone would no longer go past SE logo ( i had installed CWM for default rom and bootlocker blew up the kernel probobly)
after which i flashed Fusion 5.4 with fastboot
and then i applied SJB from SD card.
I did not think it would be that easy. it was.
Thanks to all and everyone who posted here got a Thanks
Click to expand...
Click to collapse
congz