Develop Bugs

Help! Arc S rooting and custom ROM installtion

Hi friends..
I m coming from motorola defy..recently bought xperia arc s
but i have few doubts..and need to be cleared..
1: So flashtool is used to install everything? from rooting to custom ROM?
2: my arc's software version is 4.0.2.A.0.62..so how to root it using flashtool after unlocking bootloader?
3: and how to 'flash' a baseband? heard there are different types of baseband.. and are they based on country? like in india we use 850Mhz for 2G and 2100MHz for 3G.
Please guide me as i m new to unlocked bootloader world
aleast pls paste the link of the threads...
Thanks You

First unlook the bootloder.
Flash the kernel needed ICS or GB (see on the developpement section)
Chose the rom desired and flash it from the sd card throught recovery.
The baseband can be flashed from flashtool

kool...thanks for replying...so if we flash a custom kernel can we still boot into stock os?
and then how to create CWM recovery? using flashtool only?
pls guide me dude...

arpith.fbi said:
kool...thanks for replying...so if we flash a custom kernel can we still boot into stock os?
and then how to create CWM recovery? using flashtool only?
pls guide me dude...
Click to expand...
Click to collapse
Go through this, carefully. http://wiki.cyanogenmod.com/wiki/Sony_Ericsson_Xperia_Arc:_Full_Update_Guide
http://forum.xda-developers.com/showthread.php?t=1133650
This two topics have answeres for all of your questions. Read carefully.
If you ask me, a suggest you go through first topic, then flash this kernel http://forum.xda-developers.com/showthread.php?t=1514849, this rom http://forum.xda-developers.com/showthread.php?t=1537717. Working delightly.

i got all my answers last night..thanks anyways..have still one doubt..how to flash a baseband? through fastboot? can anyone past the link to fastboot ?

through flashtool..
http://forum.xda-developers.com/showthread.php?t=920746

[Q]Root and flash kernel Xperia Arc s

hi guys, i have bought a XPERIA ARC S and i would to root my phone.
I have also checked if is allowed unlock bootloader and it's ok!
So, i have the last rom 4.0.4 stock, is possibile have root with this tool http://forum.xda-developers.com/showthread.php?t=1320350?
so, if i want flash a kernel with root included, i must only unlock bootloader and then flash kernel?
The last question is: the rom/kernel are the same for ARC and ARC s?

Hi mate,
The rooting tool that you have linked to needs you to have CWM working before you root. So to use that method you need to unlock your bootloader and then flash a custom kernel. Then enter recovery and flash the latest image.
If you don't want to flash a different kernel, look at this thread: http://forum.xda-developers.com/showthread.php?t=1868455. (Might cover your next question as well)
All the roms and kernels are interchangeable for the arc and the arc s, since the only difference is the clock speed. (On some rom's you might need to change your build.prop from LT15i to LT18i, but that's all. If it does have the option though, always pick the LT18i)
Hope I was able to help

Jon565G said:
Hi mate,
The rooting tool that you have linked to needs you to have CWM working before you root. So to use that method you need to unlock your bootloader and then flash a custom kernel. Then enter recovery and flash the latest image.
If you don't want to flash a different kernel, look at this thread: http://forum.xda-developers.com/showthread.php?t=1868455. (Might cover your next question as well)
All the roms and kernels are interchangeable for the arc and the arc s, since the only difference is the clock speed. (On some rom's you might need to change your build.prop from LT15i to LT18i, but that's all. If it does have the option though, always pick the LT18i)
Hope I was able to help
Click to expand...
Click to collapse
ok, so if i have understand right:
1)i will unlock bootloader
2)will flash custom kernel with root in fastboot mode
it's ok?

danispal said:
ok, so if i have understand right:
1)i will unlock bootloader
2)will flash custom kernel with root in fastboot mode
it's ok?
Click to expand...
Click to collapse
1. Yep if you want. (It's not needed to flash most ROM's and will void your warranty)
2. Yeah, flash custom kernel via fastboot.
You will have to have the superuser.zip on the sd card. The enter CWM and flash it. This will give you root.

That helped me as well before. Now itd time to say thanks
Sent from my LT18i using xda app-developers app

Rooting Xperia S in 2.3.7 with 6.0.A.3.62

Hi guys..
Am in need of a little help here. I need to root a Xperia S running 2.3.7 (Yes, oldie) with firmware version 6.0.A.3.62. This is kind of an official purpose, so i have to be in 2.3.7. Aslo updating the firmware version is my last choice. When i searched, i couldnt find any pre rooted images for 6.0.A.3.62 firmware. Can somebody help me with a pre rooted image or any other method? I want it to be in the generic customization..
If in casei want to flash a pre rooted image of a newer firmware version like 6.0.A.3.73, can i directly flash the image via fastboot? or should i take some precaution since am upgrading from .62??
Your help is much appreciated..

You won't get much answer here as you have posted in the wrong section. Post this in Q,A
Sent from my Xperia S using xda premium

have you tried bin4ry method?

if you wanted to flash pre rooted firmware I take it your bootloader is unlocked? If so its very easy to root any room through cwm.

mharckk said:
have you tried bin4ry method?
Click to expand...
Click to collapse
I have seen that thread earlier.. But i didnt try it since it is mentioned that the methos is for ICS/JB ROMs.. Mine is in GB..
Moderators: Please feel free to move the thread to Q&A if this is not the right place. Sorry for the inconvinience.

I think this will help u
http://forum.xda-developers.com/showthread.php?t=1557452
But this is a custom kernel for unlocked bootloader... I am just sharing. If it helps u means ok i am happy....
Sent from my Xperia S using xda premium

See here, if your bootloader is unlocked:
http://forum.xda-developers.com/showthread.php?t=1648046

hush66 said:
See here, if your bootloader is unlocked:
http://forum.xda-developers.com/showthread.php?t=1648046
Click to expand...
Click to collapse
Thank you all for the response.. I have a small query... the doom kernel has any difference (apart from root and recovery) compared to the stock kernel?? like any tweaks or something??? because i want the phone to be exactly in a factory condition.. Please don't think that i have too many demands... .. the device is used for a testing purpose.. that's y all these mandates...
I am ready to unlock the bootloader.. so in that case... like solders33 said above.. can i just flash CWM recovery via fastboot and then istall the super user .zip via CWM?? will it work in .62??

amith007 said:
Thank you all for the response.. I have a small query... the doom kernel has any difference (apart from root and recovery) compared to the stock kernel?? like any tweaks or something??? because i want the phone to be exactly in a factory condition.. Please don't think that i have too many demands... .. the device is used for a testing purpose.. that's y all these mandates...
Click to expand...
Click to collapse
Like what DooMLoRD has mentioned in his kernel thread, his kernel is just the stock kernel that has some ramdisk changes and support for init.d and userinit scripts (besides root and CWM).

Thanks for the reply.. One more quick question... If i want to flash a pre rooted image of any newer firmwares.. say .67 or .73 .. can i just do that with fastboot flashing?? any problems in updating like that???

amith007 said:
Thanks for the reply.. One more quick question... If i want to flash a pre rooted image of any newer firmwares.. say .67 or .73 .. can i just do that with fastboot flashing?? any problems in updating like that???
Click to expand...
Click to collapse
You should flash the pre-rooted image of your present .62 firmware, not newer ones.

amith007 said:
Thank you all for the response.. I have a small query... the doom kernel has any difference (apart from root and recovery) compared to the stock kernel?? like any tweaks or something??? because i want the phone to be exactly in a factory condition.. Please don't think that i have too many demands... .. the device is used for a testing purpose.. that's y all these mandates...
I am ready to unlock the bootloader.. so in that case... like solders33 said above.. can i just flash CWM recovery via fastboot and then istall the super user .zip via CWM?? will it work in .62??
Click to expand...
Click to collapse
hush66 said:
You should flash the pre-rooted image of your present .62 firmware, not newer ones.
Click to expand...
Click to collapse
hmmmm.. thats sounds troubling.. because i couldnt find a prerooted image for .62 generic firmware for asia region..
Kindly share a link if anybody has one..
Also if i unlock the bootloader.. can i just root .62 by installing CWM and then super SU via CWM?

Update Arc S to latest ICS stock ROM

Hi guys!
I have an Arc S (Lt18i) stuck on Gingerbread and I would like to have the latest stock ICS version, which I think is 4.0.4.
I understand I have to use a program called flashtool.
Will I be able to flash the ROM using flashtool if my phone isn't rooted and the bootloader is locked?
And could someone point me to a link to download the ROM?
Thank you very much.

ktix007 said:
Hi guys!
I have an Arc S (Lt18i) stuck on Gingerbread and I would like to have the latest stock ICS version, which I think is 4.0.4.
I understand I have to use a program called flashtool.
Will I be able to flash the ROM using flashtool if my phone isn't rooted and the bootloader is locked?
And could someone point me to a link to download the ROM?
Thank you very much.
Click to expand...
Click to collapse
No you cant flash kernels whrn your bootloader is locked...
You must unlock & root your mobile 1st.
You can only flash firmware(ftf) files with above configuration...
Press thnx if I helped.
Sent from my ST18i

ktix007 said:
Hi guys!
I have an Arc S (Lt18i) stuck on Gingerbread and I would like to have the latest stock ICS version, which I think is 4.0.4.
I understand I have to use a program called flashtool.
Will I be able to flash the ROM using flashtool if my phone isn't rooted and the bootloader is locked?
And could someone point me to a link to download the ROM?
Thank you very much.
Click to expand...
Click to collapse
Search around the forums, there are guides and links to the stuff you need.
Latest ICS ftf file:
https://hotfile.com/dl/167361348/43349db/LT18i_4.1.B.0.587_(1254-2716).ftf.html
skb6T9 said:
No you cant flash kernels whrn your bootloader is locked...
You must unlock & root your mobile 1st.
You can only flash firmware(ftf) files with above configuration...
Press thnx if I helped.
Sent from my ST18i
Click to expand...
Click to collapse
Locked bootloader can flash stock kernel, you cannot flash custom kernel. Locked bootloader does not mean cannot flash kernel.
僕のLT18iから送られてきた

popthosegaskets said:
Search around the forums, there are guides and links to the stuff you need.
Latest ICS ftf file:
https://hotfile.com/dl/167361348/43349db/LT18i_4.1.B.0.587_(1254-2716).ftf.html
Locked bootloader can flash stock kernel, you cannot flash custom kernel. Locked bootloader does not mean cannot flash kernel.
僕のLT18iから送られてきた
Click to expand...
Click to collapse
Already said that..
Stock kernels are always in ftf format...
Sent from my ST18i

popthosegaskets said:
Search around the forums, there are guides and links to the stuff you need.
Latest ICS ftf file:
https://hotfile.com/dl/167361348/43349db/LT18i_4.1.B.0.587_(1254-2716).ftf.html
Locked bootloader can flash stock kernel, you cannot flash custom kernel. Locked bootloader does not mean cannot flash kernel.
Click to expand...
Click to collapse
Ok thank you very much! so I've looked and just to clarify:
I put this file in the "firmwares" folder in c:\flashtool,
press the lightning icon and choose Flashmode,
select Wipe User Data,Wipe Cache and No Final Verification Check
Will I loose all my apps? and if so, can I do it without wiping user data?

skb6T9 said:
Already said that..
Stock kernels are always in ftf format...
Sent from my ST18i
Click to expand...
Click to collapse
Not necessarily...
ktix007 said:
Ok thank you very much! so I've looked and just to clarify:
I put this file in the "firmwares" folder in c:\flashtool,
press the lightning icon and choose Flashmode,
select Wipe User Data,Wipe Cache and No Final Verification Check
Will I loose all my apps? and if so, can I do it without wiping user data?
Click to expand...
Click to collapse
Flashing via Flashtool will always wipe data. Unless you have a nandroid backup, it's not possible to keep apps and their data.
僕のLT18iから送られてきた

skb6T9 said:
No you cant flash kernels whrn your bootloader is locked...
You must unlock & root your mobile 1st.
You can only flash firmware(ftf) files with above configuration...
Press thnx if I helped.
Sent from my ST18i
Click to expand...
Click to collapse
Wrong. Flashtool does not require unlock or root to flash stock firmware/kernel or any other part of the FTF file.
skb6T9 said:
Already said that..
Stock kernels are always in ftf format...
Sent from my ST18i
Click to expand...
Click to collapse
popthosegaskets said:
Not necessarily...
Click to expand...
Click to collapse
At the moment, stock kernels can only be installed via FTF file.

Someguyfromhell said:
Wrong. Flashtool does not require unlock or root to flash stock firmware/kernel or any other part of the FTF file.
At the moment, stock kernels can only be installed via FTF file.
Click to expand...
Click to collapse
When did I say any thing about flashtool? :what:
Sent from my ST18i

[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