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

ftf with root and cwm

hello every body
is there a .ftf file with root and cwm in it ?
i need it because every time i try a rom and have a no boot i need to flash a stock rom and root it and install cwm w then i can try again with another rom so is there a prerooted ftf file with cwm preinstalled ?? or is there a shorter way ??
sorry about my bad english (it is not my first language)

AW: ftf with root and cwm
ash-ta said:
hello every body
is there a .ftf file with root and cwm in it ?
i need it because every time i try a rom and have a no boot i need to flash a stock rom and root it and install cwm w then i can try again with another rom so is there a prerooted ftf file with cwm preinstalled ?? or is there a shorter way ??
sorry about my bad english (it is not my first language)
Click to expand...
Click to collapse
that was also my first question on xda, good old times...
No, it's not possible, ftf. files can only be made by Sony, so you've got to do always the same prodecure for flashing, rooting,....
Sent from my LT18i using xda app-developers app

Master of Bisaster said:
that was also my first question on xda, good old times...
No, it's not possible, ftf. files can only be made by Sony, so you've got to do always the same prodecure for flashing, rooting,....
Sent from my LT18i using xda app-developers app
Click to expand...
Click to collapse
thank you so much for your answer
so i think i will keep doing that long thing again and again

That's a really tedious procedure you're following. When I try a custom ROM and don't like it, all I do is:
1) If switching between an ICS ROM and a JB ROM and vice versa, reflash the kernel, then reflash the ROM.
2) If moving from one ICS ROM to another, or one JB ROM to another, just reflash the ROM.
3) If moving from ICS/JB to GB or vice versa, flash the stock ROM, flash the kernel, and then flash the custom ROM.
You don't need to keep on flashing the stock ROM, rooting it, installing CWM, then installing the custom ROM. Kernels, as far as I know, usually come with recovery installed. If you're in a bootloop, just follow the pertinent steps from the list outlined above.

MarcSinger said:
That's a really tedious procedure you're following. When I try a custom ROM and don't like it, all I do is:
1) If switching between an ICS ROM and a JB ROM and vice versa, reflash the kernel, then reflash the ROM.
2) If moving from one ICS ROM to another, or one JB ROM to another, just reflash the ROM.
3) If moving from ICS/JB to GB or vice versa, flash the stock ROM, flash the kernel, and then flash the custom ROM.
You don't need to keep on flashing the stock ROM, rooting it, installing CWM, then installing the custom ROM. Kernels, as far as I know, usually come with recovery installed. If you're in a bootloop, just follow the pertinent steps from the list outlined above.
Click to expand...
Click to collapse
that is rghit but the problem is i need the cwm for flashing the new rom and i have no boot (just sony logo) i cant enter the cwm so i find that i need to reinstall the cwm and try again
if i say any thing wrong please correct it to me maybe you teach me some thing that is new to me

ash-ta said:
maybe you teach me some thing that is new to me
Click to expand...
Click to collapse
Go read the stickys, get some basic knowledge and learn something for yourself, then ask questions about what you don't fully understand, on an existing thread that you found while Googling.

bootloader locked or unlocked because it sounds like you have a locked bootloader, if it is unlocked then why dont you flash a kernel eg. kernel rush with CWM already on it ?

ash-ta said:
that is rghit but the problem is i need the cwm for flashing the new rom and i have no boot (just sony logo) i cant enter the cwm so i find that i need to reinstall the cwm and try again
if i say any thing wrong please correct it to me maybe you teach me some thing that is new to me
Click to expand...
Click to collapse
You don't need to install CWM again, even if you're in a boot loop. Once the phone reboots, keep pressing the "down" volume rocker, as you always do, and you'll enter into recovery. If you're moving to a different Android version (for example, ICS to JB), switch off your phone and flash the appropriate kernel. Then all you need to do is reflash your previous ROM or flash any other ROM that you want. However, that's only possible if you've download your previous and/or other ROMs onto your SD card, too. Do you do that before you flash?
I don't have any experience with locked bootloaders, but the user above IS of the opinion that you might be on one. If that's the reason you're having to go through so many steps to flash a ROM, why don't you try unlocking the bootloader of your phone? I'm more than certain your phone's not covered under warranty anymore, and unlocking the bootloader is definitely not going to fry your phone or anything of the sort.

[Q] Newbie. Please HELP!!!

I am really new to this kind of things.
First. I have a Sony Xperia Arc S Lt18i running in Official Gingerbread.
My phone is not rooted and also bootloader is still locked but upon checking it can be unlock.
I really wanted to install these custom ROMS available in this website but I really don't know what to do.
So many terminologies that I can't understand what they means.
I really wanted to install this specific custom rom " Xperia Z Jelly Bean ver3 ".
Can you guys help me?
What are the steps? Do I need to root my phone first before installing this? also do I need to unlock the bootloader to install this?
Sorry for my english.
Please be nice to me. Thank you.
Newbie here!!!

Read the stickys that are there to help you.
From me to you.

XperienceD said:
Read the stickys that are there to help you.
From me to you.
Click to expand...
Click to collapse
Or the ROM's topic, these include instructions aswell.

scrappykoko12 said:
I am really new to this kind of things.
First. I have a Sony Xperia Arc S Lt18i running in Official Gingerbread.
My phone is not rooted and also bootloader is still locked but upon checking it can be unlock.
I really wanted to install these custom ROMS available in this website but I really don't know what to do.
So many terminologies that I can't understand what they means.
I really wanted to install this specific custom rom " Xperia Z Jelly Bean ver3 ".
Can you guys help me?
What are the steps? Do I need to root my phone first before installing this? also do I need to unlock the bootloader to install this?
Sorry for my english.
Please be nice to me. Thank you.
Newbie here!!!
Click to expand...
Click to collapse
U should Unlock bootloader then instal Rom easies

scrappykoko12 said:
I am really new to this kind of things.
First. I have a Sony Xperia Arc S Lt18i running in Official Gingerbread.
My phone is not rooted and also bootloader is still locked but upon checking it can be unlock.
I really wanted to install these custom ROMS available in this website but I really don't know what to do.
So many terminologies that I can't understand what they means.
I really wanted to install this specific custom rom " Xperia Z Jelly Bean ver3 ".
Can you guys help me?
What are the steps? Do I need to root my phone first before installing this? also do I need to unlock the bootloader to install this?
Sorry for my english.
Please be nice to me. Thank you.
Newbie here!!!
Click to expand...
Click to collapse
Then learn not to become one by reading the stickies and following the instructions...
You need to unlock bootloader first by going to unlockbootloader.sonymobile.com.
Follow the instructions on the website.
You will have unlocked bootloader if done correctly.
Place the ROM zip onto your sdcard first before you forget.
Flash a kernel with CWM recovery on it using the same fastboot drivers when unlocking bootloader.
Once done flashing kernel, boot to CWM by pressing Vol Down button at boot(when you see kernel screen)
Go to install zip, select zip and choose ROM zip. Let it install the ROM, which takes a few minutes.
Wipe data, cache partition and dalvik cache.
Reboot phone, you should see the ROM booting up.
Don't hesitate to ask if you have questions.
僕のLT18iから送られてきた

[Q] Can i keep going on r800x Bootloader Unlock?

// It seem that i posted on the wrong section (had alot of tabs opened, sorry for my mistake, if any admin can move the post, will be AWZUM!)
Hello! im pretty new to unlocking bootloaders and stuff, and i wanted to know, i search here on XDA some tutorials and i found this one:
http://forum.xda-developers.com/showthread.php?t=1961298
How ever that tutorial covers 2.3.3, and im running 2.3.2 Stock Rom, also when going to sonymobile and following the steps to unlock the bootloader, itsays to dial *#*#7378423#*#* and check for rooting status, my device dosnt have that displayed ( as a side note, i rooted my deviced almost 2 years ago).
However, I Continued with the sony steps and when dialing *#06# , the cellphone does give me my MEID, i continued with the tutorial, and so far, i got in my mail, my key to unlock my bootloader.
My question is, can i proceed with unlocking my bootloader? i would like to install a custom kernel so i can overclock it, to play games a little more fluid, my current room its a Stock Rom, however ALL the bloatware apps are gone now, my phone just have about 12 apps, and its using 80 megas out of the 300 the xperia has. is this good or i can go better with a custom kernel and a smaller rom?also im from mexico, when doing this im gonna need to reactivate my cellphone or something on the company?
Cellphone: R800x (Custom Build.prop To Be Identified in the market as a R800i)
Status: Rooted
Rom: Stock Rom 2.3.2
Want To: Play games more fluid, try to overclock TO A SAFE SPEED. i dunno maybe 1.6? 1.5?
Thank you! C:

Update to 2.3.4 then it will show in service menu if you can unlock bootloader and if you want root then root through flashtool with 2.3.4
Sent from my LT30p using xda app-developers app

ScarletDreamz said:
// It seem that i posted on the wrong section (had alot of tabs opened, sorry for my mistake, if any admin can move the post, will be AWZUM!)
Hello! im pretty new to unlocking bootloaders and stuff, and i wanted to know, i search here on XDA some tutorials and i found this one:
http://forum.xda-developers.com/showthread.php?t=1961298
How ever that tutorial covers 2.3.3, and im running 2.3.2 Stock Rom, also when going to sonymobile and following the steps to unlock the bootloader, itsays to dial *#*#7378423#*#* and check for rooting status, my device dosnt have that displayed ( as a side note, i rooted my deviced almost 2 years ago).
However, I Continued with the sony steps and when dialing *#06# , the cellphone does give me my MEID, i continued with the tutorial, and so far, i got in my mail, my key to unlock my bootloader.
My question is, can i proceed with unlocking my bootloader? i would like to install a custom kernel so i can overclock it, to play games a little more fluid, my current room its a Stock Rom, however ALL the bloatware apps are gone now, my phone just have about 12 apps, and its using 80 megas out of the 300 the xperia has. is this good or i can go better with a custom kernel and a smaller rom?also im from mexico, when doing this im gonna need to reactivate my cellphone or something on the company?
Cellphone: R800x (Custom Build.prop To Be Identified in the market as a R800i)
Status: Rooted
Rom: Stock Rom 2.3.2
Want To: Play games more fluid, try to overclock TO A SAFE SPEED. i dunno maybe 1.6? 1.5?
Thank you! C:
Click to expand...
Click to collapse
You can unlock your bootloader with flashtool. Doublecheck your unlock code you got from Sony. Make sure you have correct drivers installed. Verizon kept the root status in service menu hidden... But it will work.

Yes it will work but as lordomn said check and make sure all your drivers are good then do it and you should be fine
sent from my Sony Ericsson xperia play ™ (r800x) using Tapatalk 4

Thank you guys! so far, i got my Xperia Play atm very clean, i got it whitout ANY bloatware, i think almost same as the "Cola Rom", it only have like 10 apps, as a base, and it uses 70 megas from the 300 that it has, so my question would be, if there are any GREAT benefits from unlocking the bootloader, on the "Gaming" side of this, like what can i do after unlocking the bootloader that will pump a little my device on the gaming way? O:

Well you can flash a new kernel and over clock your device
sent from my Sony Ericsson xperia play ™ (r800x) using Tapatalk 4

crazymonkey05 said:
Well you can flash a new kernel and over clock your device
sent from my Sony Ericsson xperia play ™ (r800x) using Tapatalk 4
Click to expand...
Click to collapse
Yeah, thats easy saying lo, but im particulari new to this.. theres alot of stuff involved, for example, im on 2.3.2 stock rom, i made a revocery image using CWM, and saved it somewhere safe, so here are the questions in order, ( if you can answer them in order would be great ):
1.- im on 2.3.2 stock rom, and i saw a kernel named 2.3.3 stock kernel with overclock, can i flash this with my stock rom and keep my stock rom, or i would need to flash first a 2.3.3 stock rom?
2.- when i want to test a new rom, do i need to flash the kernel first, or the rom?
3.- am i totaly safe with CWM and a nandroid backup?
4.- testing kernel is something safe? i mean can i go back?
5.- if something goes REALLY WRONG, can i flash the stock rom/kernel using flashtool?
6.- i found this http://forum.xda-developers.com/showthread.php?t=1605631 wich is the stock kernel 2.3.3 overclocked, but im on 2.3.2, can i flash it and stay on 2.3.2 or i need to flash the kernel and then the room, or first the rom and then the kernel?
7.- can i install CWM recovery on all the roms? i pretty much want to be safe, in case something goes wrong, or can i just use FLASHTOOL, to flash the stock firmware / kernel 2.3.2 and start over again?
8.- unlocking bootloader makes the xperia play able to use the flashtool, right? like, whitout unlocked bootloader, how does people flash roms for locked bootladers? using CWM recovery menu, the update .zip function? im pretty confussed right here, like, i unlocked my bootloader, so, i can use flashtool right, thats what unlocking the bootloader its for?

ScarletDreamz said:
Yeah, thats easy saying lo, but im particulari new to this.. theres alot of stuff involved, for example, im on 2.3.2 stock rom, i made a revocery image using CWM, and saved it somewhere safe, so here are the questions in order, ( if you can answer them in order would be great ):
1.- im on 2.3.2 stock rom, and i saw a kernel named 2.3.3 stock kernel with overclock, can i flash this with my stock rom and keep my stock rom, or i would need to flash first a 2.3.3 stock rom?
2.- when i want to test a new rom, do i need to flash the kernel first, or the rom?
3.- am i totaly safe with CWM and a nandroid backup?
4.- testing kernel is something safe? i mean can i go back?
5.- if something goes REALLY WRONG, can i flash the stock rom/kernel using flashtool?
6.- i found this http://forum.xda-developers.com/showthread.php?t=1605631 wich is the stock kernel 2.3.3 overclocked, but im on 2.3.2, can i flash it and stay on 2.3.2 or i need to flash the kernel and then the room, or first the rom and then the kernel?
7.- can i install CWM recovery on all the roms? i pretty much want to be safe, in case something goes wrong, or can i just use FLASHTOOL, to flash the stock firmware / kernel 2.3.2 and start over again?
8.- unlocking bootloader makes the xperia play able to use the flashtool, right? like, whitout unlocked bootloader, how does people flash roms for locked bootladers? using CWM recovery menu, the update .zip function? im pretty confussed right here, like, i unlocked my bootloader, so, i can use flashtool right, thats what unlocking the bootloader its for?
Click to expand...
Click to collapse
i think you can find the answer to alot of your questions here at FMA's thread it has a very good Q&A.... but anyhow ill answer them to the best of my ability.
1. im not sure as i never messed around with GB but i believe that 2.3.3 kernel will work on 2.3.2, but why would you want to stay on 2.3.2 when 2.3.3 has better performance?
2. Yes always flash the kernel first then the rom.
3. A Nandroid backup does not back-up the kernel as the partion its on CWM cant see... so if you get a faulty kernel flash or you flash a wrong kernel just use flashtool to get a working one.
4.yes you can always go back from flashing a kernel and yes its pretty much safe.
5. yes you can always flash with flashtool unless for whatever reason you damage the bootloader or the Trim Area then you have to seek for more advanced methods to recover the phone, dont worry tho if you dont accept an official update after unlocking the bootloader you will be fine.
6.i would be safe and upgrade to 2.3.3 using a .ftf so that you dont have any headaches.
7. yes you can flash CWM on all roms, however CWM is not part of the rom but the kernel and almost every costom kernel already has a recovery.
8.no everyone can use flashtool, unlocked or not except r800at models, no thats not what flashtool is for, flashtool is built to flash .ftf files to Sony Ericsson phones, it also has other functions like unlocking a bootloader and other things
if you have other questions just ask and i will do my best to answer them...