Develop Bugs

[Q] Latest baseband Xperia Arc

Which is the latest baseband for the Xperia Arc? Yesterday my phone upgraded to 4.0.2.A.0.42 (android version 2.3.4) with kernel version [email protected] #1, and my baseband is 203028D-56. Is this the baseband i should use? If not which is it?

it newest one.
If you dont use any custom rom, or anything else. Then you have newest one possible.

electrash said:
it newest one.
If you dont use any custom rom, or anything else. Then you have newest one possible.
Click to expand...
Click to collapse
What do youn mean by "any custom rom, or anything else"? I installed this baseband (56) for use with the [email protected], but after a reboot problem occured, i had to relock the bootloader and download the latest firmware from SEUS. Now i am with a locked bootloader and an unrooted xperia arc @ 2.3.4 android
Thank you btw for the reply!!

that mean you have newest one

Any reason why need to upgrade baseband?

Baseband update him self paralel with FW.
every FW comes with new baseband. (almost)

Baseband .56
Fw .42
Sent from my Anzu using xda premium

[Q] How do I upgrade to 4.0 with a LOCKED Bootloader? PLEASE HELP =)

Hey guys! As the title states, Just trying to figure out a step-by-step way to upgrade my Arc to 4.0+ whilst having a LOCKED BOOTLOADER.
I am unable to unlock the bootloader and understand this causes quite a few problems.
I already "bricked" the phone once..had to repair it to get it back to stock again. I don't want to go through that again..
So, it would be greatly appreciated if someone could kindly direct me to, or outline here, a step-by-step guide to installing ICS on my Xperia Arc.
Thanks for all your time and help!

Use flashtool to flash the official ICS release.

sinkster said:
Use flashtool to flash the official ICS release.
Click to expand...
Click to collapse
Hey thanks for the quick reply. Do I need to have root before upgrading? And also, do I need CWM recovery?
Can I just use flashtool to flash the ftf file?
Thanks again for the help. Much appreciated
Sent from my SGH-T989 using xda premium

Just flash using flashtool, it flashes the kernel too. I think Binary has added a root file too.
sinkster©

There is an update you need to apply to flashtools if you have version .6 you need version .7 look in stickies for flashtools... Info in that thread.
Sent from my LT18i using XDA App

If your phone is Xperia Arc(LT 15i) I recommend you to wait the official update of ICS for arc, at this moment ICS is available for Arc S. I have Xperia Arc but i use a custom ICS rom with custom kernel, and bootloader unlocked.

Thanks everyone for the info.
My Xperia is LT15a, but I recently got it repaired and now it says LT18a instead. =S
Android 2.3.4
Baseband: 8x55A-AAABQOAZM-203028D-64
Kernel: 2.6.32.9-perf - [email protected] #1
Build Number: 4.0.2.A.0.62
Bootloader is Locked
Can I still upgrade?
Thanks again for your time and help!

SH31KH said:
My Xperia is LT15a, but I recently got it repaired and now it says LT18a instead. =S
Click to expand...
Click to collapse
huh ? i do not understand... is it okay for the repair shop to do that ? . . . there are several h/w differences between last year's model and this year's model to 'require' the new internal s/w to properly talk to the new h/w ( drivers... )
.
please correct me if i am wrong.

Debranding the Arc S ?

Hi just wondering if anybody knows how to debrand the 3 UK Xperia Arc S. I have de-branded an Xperia Play before but I cannot find the approriate files for the Arc S. Any help would be appreciated. 
Thanks
Sent from my LT18i using XDA

First of all, you should ALWAYS post your doubts in the Q&A forum.
To debrand the phones flash with flashtool any generic firmware, here you have 4.0.4 firmware for the ARC S : http://forum.xda-developers.com/showthread.php?t=1583010

Sorry I am new to XDA and thnak you too i appreciate the help

Once installed and debranded.
look for how to root once you got this you can get rid of all the bloatware that is installed.
Sent from my LT15i using xda premium

Yeah I will do but I have read that currently there's now way to root the 4.0.4 update yet for xperia arc s when i had the Play i used one click root.

Yes , you can root 4.0.4.
You have to flash 4.0.4 ftf, after that you have to flash 4.0.3 kernel ( you have to download 4.0.3 ftf and flash just kernel with flashtools).
After you have your arc/arc s with 4.0.4 rom and 4.0.3 kernel , you use the one click method for the 4.0.3.
After you just need to flash 4.0.4 kernel and you have a full 4.0.4 (rom+kernel) rooted

DiogoCMartins said:
Yes , you can root 4.0.4.
You have to flash 4.0.4 ftf, after that you have to flash 4.0.3 kernel ( you have to download 4.0.3 ftf and flash just kernel with flashtools).
After you have your arc/arc s with 4.0.4 rom and 4.0.3 kernel , you use the one click method for the 4.0.3.
After you just need to flash 4.0.4 kernel and you have a full 4.0.4 (rom+kernel) rooted
Click to expand...
Click to collapse
Ahh thank you I will get that done now already part way there lol just flashed the 4.0.4 firmware thanks again

You're welcome (;

Arc s

u have stock Arc s
android version 2.3.4
build number 4.0.2.A.0.62
i want to upgrade to Ice Cream Pureness
what i have to do ??
can i just unlock the bootloder and roted
???
and then i can flash the rom
or i need to have official ics first ?

U can do in both ways. . Either unlock the bootloader.. & flash custom kernel.. Or Stock ics kernel..
OR
Update ur s/w to ics.. , Root it.. , Install cwm recovery. . Then flash the Rom...!:-/
Sent from my LT15i using xda premium

Make sure to have working flashtool and working update service.
Also download at least one applicable ftf file for flashtool.
Make sure that drivers for both tools are in place then you can play with your phone.
Sent from my LT18i using Tapatalk 2

kilouhm said:
u have stock Arc s
android version 2.3.4
build number 4.0.2.A.0.62
i want to upgrade to Ice Cream Pureness
what i have to do ??
can i just unlock the bootloder and roted
???
and then i can flash the rom
or i need to have official ics first ?
Click to expand...
Click to collapse
If u dont want to unlock the bootloader, then flash any ics stock firmware , install cwm and then flash Ice cream pureness.
If u have already unlockd the BL, flash kernel with cwm first and then flash Pureness rom

[Q] Is something possible for me?

Hello users i am new to xda and want to root my phone but after some time i have noticed that i dont really have an possible option to do this.
My phone:
SONY Xperia S / Lt26i / 6.1.A.2.55 / Android 4.0.4 ICS / Locked Bootlader / Bootloader unlock allowed: no/
At the beginning i wanted to try the method from "Bin4ry" but it doesn't work with my stock firmware and with the cf too. (i think)
Please help me!

dominik07 said:
Hello users i am new to xda and want to root my phone but after some time i have noticed that i dont really have an possible option to do this.
My phone:
SONY Xperia S / Lt26i / 6.1.A.2.55 / Android 4.0.4 ICS / Locked Bootlader / Bootloader unlock allowed: no/
At the beginning i wanted to try the method from "Bin4ry" but it doesn't work with my stock firmware and with the cf too. (i think)
Please help me!
Click to expand...
Click to collapse
Flash stock firmware like. 50 or. 45 using flashtool in flashmode.This is absolutely safe.Then root & flash cwm.After then flash kernel & baseband of. 55 and flash. 55 rom in cwm.
Press Thanks
Sent from my LT26i using xda premium

Will it not work how they're rooting the new U firmware? Just use flashtool to flash kernel only of the older firmware. Root with binary, then use flashtool to flash kernel only of the latest firmware again?
Sent from my Jellybean Xperia S

How i can do this?
RISHI RAJ said:
Flash stock firmware like. 50 or. 45 using flashtool in flashmode.This is absolutely safe.Then root & flash cwm.After then flash kernel & baseband of. 55 and flash. 55 rom in cwm.
Press Thanks
Sent from my LT26i using xda premium
Click to expand...
Click to collapse
and what about the warranty? and i heard that flashing down/downgrading is only possible when you have a unlocked bootlader

you can use flashtool even if youre on locked bootloader.

Flashtool is fine for warranty etc as it's only flashing official sony files
Sent from my Jellybean Xperia S

Thank you all for the answers but what i have to do now with the flashtool(i am a noob in android rooting but i am pro in psp hacking)

@RISHI RAJ
thank u for helping me but i dont understand your post cause i am a noob
It would be nice if some1 could post me here or some where else a guide to exactly this problem or thing

Yea!
I've rooted it so thank you very much for your help!