Root 4.0.4 without downgrade? - Sony Ericsson Xperia Mini, Mini Pro, Xperia Pro, A

Hi,
Coul be possible to root my ST18i (4.1.B.0.431) 4.0.4 but without downgrade to 4.0.3????
I found below guide, but looks like must downgrade to 4.0.3 first ?¿?¿?¿?¿?
http://forum.xda-developers.com/showthread.php?t=1682224
Thanks in advance!

Peteivissa said:
Hi,
Coul be possible to root my ST18i (4.1.B.0.431) 4.0.4 but without downgrade to 4.0.3????
I found below guide, but looks like must downgrade to 4.0.3 first ?¿?¿?¿?¿?
http://forum.xda-developers.com/showthread.php?t=1682224
Thanks in advance!
Click to expand...
Click to collapse
Please post your question in Q&A therad
I made it with this way. You must not downgrade, just change kernel with flashtool. Flash 4.0.3 kernel, root and install cwm, then flash back 4.0.4 kernel.

To flash kernel, you have to unlock your BL first.
BUT, in fact, you could flash a pre-rooted kernel after unlock BL, so you needn't flash a 4.0.3 kernel first
Sent from my Xperia ray using xda-developers app

BloodEdge said:
To flash kernel, you have to unlock your BL first.
BUT, in fact, you could flash a pre-rooted kernel after unlock BL, so you needn't flash a 4.0.3 kernel first
Sent from my Xperia ray using xda-developers app
Click to expand...
Click to collapse
Unlock your bootloader to flash custom kernel. In this rooting method you flash sony stock kernel, so you don't need unlock your bootloader.

yes you don't have to unlock your bootloader to flash the "stock" kernel which is an "ftf" file... just flash your 4.0.4 normally, after flash the 4.0.3 kernel, when is done reboot and root it, and reflash the 4.0.4 kernel... voilà... and after you can install your CWM

Wechy77 said:
Unlock your bootloader to flash custom kernel. In this rooting method you flash sony stock kernel, so you don't need unlock your bootloader.
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brunsman6229 said:
yes you don't have to unlock your bootloader to flash the "stock" kernel which is an "ftf" file... just flash your 4.0.4 normally, after flash the 4.0.3 kernel, when is done reboot and root it, and reflash the 4.0.4 kernel... voilà... and after you can install your CWM
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THX for reminding…
Noob's mistake
Sent from my Xperia ray using xda-developers app

Please post questions in the Q&A thread. Thank you.

Related

Unlock Bootloader - downgrading

if i want to downgrade my FW from .62 i must unlock bootloader?
there is no way to root .62 fw, right?
yeah, no way to root .62
if u want to root, flash to .58 fw,
or use custom kernel.
sent from my Walkman
To flash firmware u dont need to unlock bootloader. Unlocking is needed to boot custom kernels.
Sent using r800i with DoomKernel v11 (1.21ghz)

[Q] relock bootloader

Guyzz mah question is im currently using custom rom n custom kernal so i want to relock my xperia mini's bootloader via http://forum.xda-developers.com/showthread.php?t=1560613&page
so do i need to flash stock rom n kernal before relocking bootloader if yes then where can i get them n if no then aftr relocking bootloader how to get back to stock rom n kernal....i'm doing this foh official ics update....
plz help me out..
Relocking bootloader requires stock kernel. Kernel is included in a ftf file. The complete stock firmware is in ftf file, which you need to install via Flashtool.
Sent from my Xperia Live using xda premium
Someguyfromhell said:
Relocking bootloader requires stock kernel. Kernel is included in a ftf file. The complete stock firmware is in ftf file, which you need to install via Flashtool.
Sent from my Xperia Live using xda premium
Click to expand...
Click to collapse
ty bro...i did it...

LT26i: relocking bootloader erase user data?

Can anyone please let me know if relocking the bootloader on my xperia s will erase user data or not so that i should know to prepare backup or not?
Sent from my LT26i
From my experience relocking does not erase the data only unlocking.
Sent from my Sony Xperia™ ion.
Alright than will relocking crash the android operating system wile on rooted status or will i have unroot before relocking?
Sent from my LT26i
precardo said:
Alright than will relocking crash the android operating system wile on rooted status or will i have unroot before relocking?
Sent from my LT26i
Click to expand...
Click to collapse
its not important if your device is rooted or not. (relocking)
but you should know that you have to use a stock kernel when your bootloader is locked!
precardo said:
Can anyone please let me know if relocking the bootloader on my xperia s will erase user data or not so that i should know to prepare backup or not?
Sent from my LT26i
Click to expand...
Click to collapse
Yes,
zaidazmi27 said:
Yes,
Click to expand...
Click to collapse
re-locking doesn't wipe anything!
just unlocking will erase data partition.
Ok thanks, im on stock ics using advanced kernel (ics11.elf) for using cwm—recovery, so now how do i gain ics stock kernel after i relock?will relock automatically put me back to stock kernel or will i have to flash stock kernel separately before/after relock? If i need stock kernel where can i download?? —Thanks guys
Sent from my LT26i
precardo said:
Ok thanks, im on stock ics using advanced kernel (ics11.elf) for using cwm—recovery, so now how do i gain ics stock kernel after i relock?will relock automatically put me back to stock kernel or will i have to flash stock kernel separately before/after relock? If i need stock kernel where can i download?? —Thanks guys
Sent from my LT26i
Click to expand...
Click to collapse
you can:
1) flash stock kernel with flash tool( select your ftf 4.0.4 rom & use exclude option)
2) re-lock bootloader
its not important when u flash the kernel! but the device with custom kernel & lock bootloader cant boot.
So by using flash tool on stock ics rom ftf will surely give me the options to only flash (kernel) without flashing the hole ftf rom by selecting (exclude)??
Sent from my LT26i
precardo said:
So by using flash tool on stock ics rom ftf will surely give me the options to only flash (kernel) without flashing the hole ftf rom by selecting (exclude)??
Sent from my LT26i
Click to expand...
Click to collapse
Yes. Exlude everything except kernel will flash only the kernel.
Sent from my Sony Xperia™ ion.

[Custom]Installation Problem[Help]

Device:-Wt19i
Rom:StockIcs.587
Rooted:Yes
Kernel:Stock
Boot-loader:Locked
Is it necessary to have boot-loader unlocked to install a custom kernel, mods, roms ?
when i install a mod via CWM my phone it goes in boot loop.
when i flash custom kernal flashtool says your device need to be rooted or something like this. {Though my device s rooted}.
when i install a custom rom[Real ics5.2] my phone is bricked just hangs at sony logo.
Thanks in Advance for help.
Sorry for my bad English.
English is not my native language.
No you must unlock bootloader to install custom kernels.
Some roms are for locked bootloader, too. These you can flash with cwm. But read carefully, what has to be formatted and wiped.
Look for roms for locked bootloader and you can install them. But ics roms must flashed through cwm when you are currtently on stock ics rom by sony. So root your phone like this to have root in ics and then flash any ics rom for "locked bootloader"
Thanks
Sent from my WT19i using xda app-developers app
lhcrulz said:
Thanks
Sent from my WT19i using xda app-developers app
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Your welcome

What steps require to re-lock bootloader (Xperia S)

My Xperia S is unlocked bootloader, using [email protected] rom with ICS15 kernel with CWM recovery. If I want to re-lock bootloader what steps needed to flash stock ICS rom. I mean, do I flash stock rom first and than re-lock BL or otherwise. I am asking this because the rom I am using is for unlocked BL therefore when I re-lock the BL there will be conflict which will force the phone to stop working. The kernel I am using will work with stock rom? If someone guide me how to start the process with step-by-step guide. Thanks
javedabbasi said:
My Xperia S is unlocked bootloader, using [email protected] rom with ICS15 kernel with CWM recovery. If I want to re-lock bootloader what steps needed to flash stock ICS rom. I mean, do I flash stock rom first and than re-lock BL or otherwise. I am asking this because the rom I am using is for unlocked BL therefore when I re-lock the BL there will be conflict which will force the phone to stop working. The kernel I am using will work with stock rom? If someone guide me how to start the process with step-by-step guide. Thanks
Click to expand...
Click to collapse
Just flash stock kernel and relock!
Don't forget to hit thank, if i deserve it!
Sent from my LT26i using xda premium
monivan said:
Just flash stock kernel and relock!
Don't forget to hit thank, if i deserve it!
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
Hi monivan. Sorry for my ignorance. The kernel I am using (ICS15) is not stock? If no, from where I get stock kernel and how do I flash it. CWM or Flashtool.
if you have a ftf for stock ics, extract the ftf using winrar or 7zip then look for kernel.sin, flash it via fastboot, or you can flash via flashtool, uncheck everything except kernel.

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