Develop Bugs

[Acro S][Kernel] Stock Kernel + CWM + Root (updated latest 6.1.A.2.55)

[Disclaimer] Do it at your own risk. I am not responsible for anything happened to your phone.
Hi all, I've just upgraded my phone to Acro S recently. It is running ICS 4.0.4 build 6.1.A.1.58. It has been updated to 6.1.A.2.55
So here is a modified Stock Kernel with CWM which I created based on Arakmar's Stock ICS kernel (Build 11) for XS
Credits:
1. Arakmar - for the ramdisk and CWM
2. DoomLord and FXP team - for too many things to mention
Link (do not mirror)
6.1.A.2.55 - http://www.mediafire.com/?zuzatcl3it3zce7
6.1.A.2.50 - http://www.mediafire.com/?jrjiwg13w3gvxpf
6.1.A.2.45 - http://www.mediafire.com/?rq43glb93khd9ia
6.1.A.1.58 - http://www.mediafire.com/?wsuha53wvcc3cav
Instructions:
1. Unzip the files to the fastboot folder, there are 2 files:
kernel.sin -- Stock ICS Kernel
kernel-cwm.elf -- Stock ICS Kernel with init.d support and CWM 5.5.0.4
2. Get into fastboot mode, type:
- To flash the CWM kernel
Code:
fastboot flash boot kernel-cwm.elf
- To flash back the Stock kernel
Code:
fastboot flash boot kernel.sin
To get into CWM - Reboot your phone, tap the screen (not buttons) a few times when the blue led and button lights appear
To root your phone, follow instructions here: http://forum.xda-developers.com/showpost.php?p=30320507&postcount=11
If you like it, please hit the [Thanks] button or you can buy me a beer

Thank you.
But i have a question: what is ram disk use for?
I used xperia s mod kernel to flash supersu.apk, then flash back stock arco s kernel, and add CMW. But some .zip file can not use.

Does this give us root or do i need to root the phone first and then flash this kernel ?
Also, do we need to unlock bootloader for this ?

Can anyone please comment on performance? Thanks in advance!!

Hi do i need to flash these 2 files or just one i want cwm.and does it include root or not?

mercury_beta said:
Thank you.
But i have a question: what is ram disk use for?
I used xperia s mod kernel to flash supersu.apk, then flash back stock arco s kernel, and add CMW. But some .zip file can not use.
Click to expand...
Click to collapse
ramdisk is part of kernel. it runs initial scripts that control how the phone starts.
dusanzk said:
Does this give us root or do i need to root the phone first and then flash this kernel ?
Also, do we need to unlock bootloader for this ?
Click to expand...
Click to collapse
You need to unlock bootloader first. This kernel won't give you root. But you can boot into cwm to flash any package that root your phone or you can flash a complete rom, if available.
john9 said:
Can anyone please comment on performance? Thanks in advance!!
Click to expand...
Click to collapse
There is no difference in performance as stock kernel
noriya said:
Hi do i need to flash these 2 files or just one i want cwm.and does it include root or not?
Click to expand...
Click to collapse
You need to flash only the one with cwm. It won't root your phone.

Thanks for your reply,is it ok to flash cwm without root first?and unlock bootloader is the same xperia s right?

cobrato said:
[Disclaimer] ]
Hi all, I've just upgraded my phone to Acro S recently. It is running ICS 4.0.4 build 6.1.A.1.58
)
Click to expand...
Click to collapse
Could you make a pre-root one?

I am sorry.
Although I checked, and kernel.sin of original and kernel.sin of cobrato are the same, is it right now?

puriketsuangel said:
I am sorry.
Although I checked, and kernel.sin of original and kernel.sin of cobrato are the same, is it right now?
Click to expand...
Click to collapse
I think you're right. The moded kernel is kernel-cwm.elf.

Root Package
Here is the Root package after you flash the kernel with cwm
To root your phone:
1. copy the RootPhone.zip file to sdcard (internal storage)
2. reboot into cwm
3. install the package
4. reboot
Link:
http://www.mediafire.com/?11rhxm1k490edxz

papacarla said:
I think you're right. The moded kernel is kernel-cwm.elf.
Click to expand...
Click to collapse
Sorry.
Ｔhanks　alot.

It works on Acro HD with Acro S's ICS ROM flashed exlude baseband.
UPD: I did not like the ICS. There are only 320 mb of free RAM. I have 460 mb of free RAM on 2.3.7. So, I installed back the 2.3.7

if you could add 2way call recording patch to this kernel would be great

cobrato said:
Here is the Root package after you flash the kernel with cwm
To root your phone:
1. copy the RootPhone.zip file to sdcard (internal storage)
2. reboot into cwm
3. install the package
4. reboot
Link:
http://www.mediafire.com/?11rhxm1k490edxz
Click to expand...
Click to collapse
This worked for me, unlocked bootloader, flashed kernel-cwm and then flashed rootphone in CWM. Thanks.
Just a suggestion,
You might wanna add "+ Root" to your title seeing as this is another way to root the device.

With CWM, can we then flash custom ROMs for Xperia S or a Kernel with permanent root (e.g. DoomKernel)?
I'd like to get rid of all the Facebook-crap in the stock ROM but if it will be there again after the next update from Sony it's no use.

skycamefalling said:
With CWM, can we then flash custom ROMs for Xperia S or a Kernel with permanent root (e.g. DoomKernel)?
I'd like to get rid of all the Facebook-crap in the stock ROM but if it will be there again after the next update from Sony it's no use.
Click to expand...
Click to collapse
Once you unlock bootloader, you can flash any custom kernel.
If the kernel comes with CWM, you can flash any rom/zip with root
But I think current S custom kernels/roms are based on older version: 6.1.A.0.452

Bootloader unlock will probably void warranty.
But how about rooting? No righht?

Where to find the tools for unlocking bootloader.
Would appreciate a link if anybody now...

SweKen said:
Where to find the tools for unlocking bootloader.
Would appreciate a link if anybody now...
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1527159
It's the same method for Xperia P/U/S/Acro S.

Xperia S bricked

Yesterday I made a clean swipe of SD Card and i tried to mount the USB storage inorder to copy the ROM zip but it dint work.Later i installed the drivers and with help of flash tool was able to flash the Stock file and was able to copy the Custom ROM.With the Flash tool now i was able to flash the Custom kernel and Custom ROM.
The problem now arises After flashing the custom ROM iam stuck at the Boot logo for nearly 2 hrs .I tried other Custom Rom also but the same issue.Help Needed.

Is ur bootloader is unlocked? Custom kernels will not work on a locked bootloader. Better u flash the stock ftf and then try... If u have bootloader locked means dont flash any custom kernels. U will get a bootloop..
Regards
From My Xperia S With XTX7 ROM

rajeevxperia said:
Is ur bootloader is unlocked? Custom kernels will not work on a locked bootloader. Better u flash the stock ftf and then try... If u have bootloader locked means dont flash any custom kernels. U will get a bootloop..
Regards
From My Xperia S With XTX7 ROM
Click to expand...
Click to collapse
My bootloader is unlocked i have checked that in sevice tests.

And what custom kernel u flashed and also which custom rom?
From My Xperia S With XTX7 ROM

rajeevxperia said:
And what custom kernel u flashed and also which custom rom?
From My Xperia S With XTX7 ROM
Click to expand...
Click to collapse
N ova Kernel 007 and Nova 1.6 ROM

[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.

[Q] problem in xperia s

i cant instal cwm
i need to install iHackers [MIUI v5] v1.3 rom but i cant because i dont know how to reboot recovery
thanks

you need a unlocked bootloader + kernel with recovery
you also need to press volume up when it shows first screen when you power your phone up
Sent from my LT26i using XDA Premium 4 mobile app

elzaim2010 said:
i cant instal cwm
i need to install iHackers [MIUI v5] v1.3 rom but i cant because i dont know how to reboot recovery
thanks
Click to expand...
Click to collapse
You can't install that ROM on locked bootloader!
Read this carefully! Here is solution, if you really want to install this.
http://forum.xda-developers.com/showthread.php?p=42101358
Sent from my LT26i using xda app-developers app

pracas said:
You can't install that ROM on locked bootloader!
Read this carefully! Here is solution, if you really want to install this.
http://forum.xda-developers.com/showthread.php?p=42101358
Sent from my LT26i using xda app-developers app
Click to expand...
Click to collapse
i have aleardy unlock bootloader but when i was trying using cwm rom he tell me that i dont have root really i dont understand what can i do
i can use flah tool if there any kerenal unable cwm i need it and how to install
thanks

elzaim2010 said:
i have aleardy unlock bootloader but when i was trying using cwm rom he tell me that i dont have root really i dont understand what can i do
i can use flah tool if there any kerenal unable cwm i need it and how to install
thanks
Click to expand...
Click to collapse
The MIUI thread has a complete tutorial of how to unlock bootloader (okay you did that), but after that it explains you how to root and install CWM. What firmware are you on? From what I can see the instructions for how to root .200/.211 are a bit daft though (the author expects you to already have a custom recovery). If you're on .200 or .211, skip the rooting step and just flash one of the custom kernels with fastboot (for how to flash a kernel with fastboot, you can also use Flashtool to do this, see here: http://forum.xda-developers.com/showthread.php?t=1963961). Depending on which recovery you installed/tried to install, there are different ways of accessing it. If you used RecoverX, you need to tap the Sony logo a few times when you're rebooting. If you used a custom kernel or the 6.0.3.0 recovery for JB DooMLorD has posted, you need to press volume up when rebooting.
If we're to help you, we'd like a little more information. So what firmware are you currently using, which recovery were you trying to install?

Redstarr1 said:
The MIUI thread has a complete tutorial of how to unlock bootloader (okay you did that), but after that it explains you how to root and install CWM. What firmware are you on? From what I can see the instructions for how to root .200/.211 are a bit daft though (the author expects you to already have a custom recovery). If you're on .200 or .211, skip the rooting step and just flash one of the custom kernels with fastboot (for how to flash a kernel with fastboot, you can also use Flashtool to do this, see here: http://forum.xda-developers.com/showthread.php?t=1963961). Depending on which recovery you installed/tried to install, there are different ways of accessing it. If you used RecoverX, you need to tap the Sony logo a few times when you're rebooting. If you used a custom kernel or the 6.0.3.0 recovery for JB DooMLorD has posted, you need to press volume up when rebooting.
If we're to help you, we'd like a little more information. So what firmware are you currently using, which recovery were you trying to install?
Click to expand...
Click to collapse
MY PHONE INFORMATION
model number lt26i
android version 4.1.2
baseband version 86660-AAA065-BQOLYM-314010-39
KERNEL VERSION 3.4.0+1.0.21100-313065-G1CCEBB5-00193-GCBC50FC
BUILD NUMBER 6.2.B.1.96

[Q] eXistenZ v2 Error 7

Hi guys i have a problem when I instaling the eXistenZ v2 on LT26. I rooted my phone i have recovery and when i install a rom have error nr 7 in revovery, any ideas?

Flash the kernel file from the rom itself
Try flashing the kernel from the rom itself bro this works most of the time Extract it first from the zip file of the ROM you want to install then install the kernel usually it is the boot.img file Flash it via fastboot mode using flashtool then voila you have the kernel of the ROM you want to use and most of the time the recovery comes with it too :good:

ksmalcuga said:
Hi guys i have a problem when I instaling the eXistenZ v2 on LT26. I rooted my phone i have recovery and when i install a rom have error nr 7 in recovery, any ideas?
Click to expand...
Click to collapse
Are You on stock firmware? Existenz requires You to be on stock 6.2.b.1.96 firmware. Also, You have to flash v1 and then flash v2, not the v2 directly.
11:55 said:
Try flashing the kernel from the ROM itself bro
Click to expand...
Click to collapse
Do check, this ROM is stock based, so it doesn't have a separate kernel.

I flashed witth stock 6.2.b.1.96, and try to flash V1 witch recovery v6.0.3.0 but still error ''Error in /sdcard/xperia_s_existenz_v1.zip (status 7)'' Maybe try with other kernel?

ksmalcuga said:
I flashed witth stock 6.2.b.1.96, and try to flash V1 witch recovery v6.0.3.0 but still error ''Error in /sdcard/xperia_s_existenz_v1.zip (status 7)'' Maybe try with other kernel?
Click to expand...
Click to collapse
Huh, weird. Just to verify, could You try downloading the v1 again? Or else, do You have a unlocked bootloader? If yes, then You can flash the DoomKernel.

Yes, i downloaded rom again, and i have lock bootloader witch no posibly to unlock 'allowed-no'' something like this, but this rom can be flash without unlocked bootloader.

ksmalcuga said:
Yes, i downloaded rom again, and i have lock bootloader witch no posibly to unlock 'allowed-no'' something like this, but this rom can be flash without unlocked bootloader.
Click to expand...
Click to collapse
Well, since You have a locked bootloader, You can't flash other kernels. Try this recovery, If even this one doesn't work, then try going back to full stock(no root, no recovery) and root using DoomLord's method and try above recovery again as it had worked for Me earlier.

ksmalcuga said:
Hi guys i have a problem when I instaling the eXistenZ v2 on LT26. I rooted my phone i have recovery and when i install a rom have error nr 7 in revovery, any ideas?
Click to expand...
Click to collapse
This is waaaay late but, may help someone.
As I understand it, this is an issue with the kernel/recovery you have. You need to flash a boot.img with a combined kernel/recovery that is compatible with the rom you wish to flash. You use fastboot for that:
Code:
fastboot flash boot boot.img
fastboot reboot
So, for official CM11, grab boot.img from the rom zip file and you should get (a rather old but fine for CM11) CWM recovery.
For many other Acro S (hikari) roms you find - e.g. @deedwar's BeanStalk - you will get TWRP recovery if you flash the included boot.img file.
Once you've got the kernel/recovery flashed, then you flash the full rom after the reboot.

MiyagiSan said:
This is waaaay late but, may help someone.
As I understand it, this is an issue with the kernel/recovery you have. You need to flash a boot.img with a combined kernel/recovery that is compatible with the rom you wish to flash. You use fastboot for that:
Code:
fastboot flash boot boot.img
fastboot reboot
So, for official CM11, grab boot.img from the rom zip file and you should get (a rather old but fine for CM11) CWM recovery.
For many other Acro S (hikari) roms you find - e.g. @deedwar's BeanStalk - you will get TWRP recovery if you flash the included boot.img file.
Once you've got the kernel/recovery flashed, then you flash the full rom after the reboot.
Click to expand...
Click to collapse
I think You didn't notice, but He said He has locked bootloader. So He cannot follow the procedure You mentioned.

Mirhawk said:
I think You didn't notice, but He said He has locked bootloader. So He cannot follow the procedure You mentioned.
Click to expand...
Click to collapse
Yes, this is for unlocked bootloader only.
Just noticed OP mentions a locked bootloader in a later post.