LT18a - Upgrade Options - Bootloader locked - Xperia Arc Q&A, Help & Troubleshooting

Hi all,
I own an LT18a which appears to be an LT18i equivalent? It's an Xperia Arc S, Central American GSM version.
It is SIM unlocked however it's made after 12W11 so I cannot unlock the bootloader. In the root status it says Bootloader Unlock is not allowed.
It is trapped on Android 2.3.4 which is horrible. No OTA available.
I am wondering what my options are, I have searched but seem to hit dead ends. Is there any alternate way to unlock the bootloader, I tried a few paid services but they said after 12W11 there is no support.
Can I install leaked 4.1 official firmwares like the UK one posted here via flash tool or can I not install anything except what is OTA (nothing at the moment).
Thanks in Advance

You can install via flashtool a ftf file
Also sony have given us a update to ICS 4.0.4
U may get it from PC companion Or a ftf file
I dont think there is a leaked 4.1 update
U may also root ur phone and then install Custom GB roms for locked bootloaders
Sent from my LT18i

sombra84 said:
It is trapped on Android 2.3.4 which is horrible. No OTA available.
I am wondering what my options are, I have searched but seem to hit dead ends. Is there any alternate way to unlock the bootloader, I tried a few paid services but they said after 12W11 there is no support.
Can I install leaked 4.1 official firmwares like the UK one posted here via flash tool or can I not install anything except what is OTA (nothing at the moment).
Thanks in Advance
Click to expand...
Click to collapse
You can update to Ice Cream Sandwich, Android 4.0.4, via PC Companion.
At the moment, there is no way for you to unlock the bootloader.
There are no 4.1 official firmwares for our phones, only the ones is xda-developers.

Thanks and thanks! 4.0.4 beats 2.3.4. I will upgrade, thanks everyone!

ICS 4.0.4 might be newer but I'd say that 2.3.4/2.3.7 GB is running much smoother on our devices, so I would not upgrade your phone, but it is your choice

Related

[Q] how to update arc 2.3.2 rooted and unlocked bootloder

Hi,
my arc have unlocked bootloder and i have rooted my android 2.3.2. the questions is can i upgrade my android with 2.3.3?
Thanks for replay.
Peter
Did you try
Edit: gave the most possible bad advise due to misreading.
Other way is to download seus, Sony Ericsson update service, and update through that, but for sure you lose your root rights than.
Further on all your answers will be here on the first page, so you could have done some reading first, than you would have found out asking this question is a bit ought...
sent from arc or optimus 2x
PollPixx said:
Did you try
Settings/about phone/
Software update, your phone will check if there is an update available.
With the ota, over the air, update you have a chance you still have a rooted phone.
Other way is to download seus, Sony Ericsson update service, and update through that, but for sure you lose your root rights than.
Further on all your answers will be here on the first page, so you could have done some reading first, than you would have found out asking this question is a bit ought...
sent from arc or optimus 2x
Click to expand...
Click to collapse
OTA for unlocked bootloaders will brick your phone. There is a fix for that now though.
Be careful of the advice you give.
You are right, I didn't read that, my apologise!!
sent from arc or optimus 2x
You have to install flashTool 0.2.9.1. http://forum.xda-developers.com/showthread.php?t=920746
Then get the updated firmware 3.0.1.A.0.145 or 146 https://rapidshare.com/files/4055154....146_Global.7z. You can keep your settings (option i FlashTool).
Then get the rootexperia.zip from Bin4ry http://forum.xda-developers.com/showthread.php?t=1130639 and flash it via recovery http://forum.xda-developers.com/showpost.php?p=14903452&postcount=169
Hope this helps
Just flash a 2.3.3 ROM (preferably rooted) with fastboot. Look in the Development section for a ROM. Its fairly easy.
http://forum.xda-developers.com/showthread.php?t=1044201
There lots of ROMs and a very good tutorial how to flash using fastboot.
very thanks i try
i have tray and work. Very thanks

Unlocked bootloader for cyanogenmod

Hi , im looking to unlock my bootloader as i want to install the cyanogenmod for my play .
But i was wondering that once i do this would it be easy to install ice cream sandwich when it gets released and would all original sony ericsson apps work fine ?
Any info on this would be much appriciated
thanks
If you use the official bootloader unlock method, you will loose the ability to OTA update or update using SEUS. You will also loose the ability to use any apps that require sony's DRM certificates. At the moment that is Track ID, The like button in the stock music app, and music and video unlimited.
If you use the paid testpoint method, you will keep all the above things
If i cant use OTA update or update using SEUS how would i do the update ?
Thanks for the info
gjpax said:
If i cant use OTA update or update using SEUS how would i do the update ?
Thanks for the info
Click to expand...
Click to collapse
You can use flashtool to update, most firmware updates end up in the dev section either just before or just after they are released, with an unlocked bootloader, you can also flash a system.img from fastboot
Excellent thanks

[Q] if the device is rooted, can we update our phone from Sony official Site

Hi,
I am using Sony Ericsson Xperia Arc S with Android 4.0.3 and my device is rooted and I have installed CWM.
Now I got an update (4.0.4) to my phone.
I am just wondering if I would be able to update my phone even though its rooted!!
Also, I would like to know that currently i have some mods like systemUI.apk and some other changes.
If I am able to update my phone, will these be replaced and get a default one as per the update of 4.0.4 or will my current mods be retained.
Kindly need your advice
Thanks
If it's only rooted then yes. If your bootloader's unlocked then no. And it will be a new install so you'll lose any mods(including root).
You can update. You will lose root and all the modifications that you made thus far.
yes you can
but if you has unlock your phone and you update it from pcc or seus it will brick

Arc unable to update beause of modified FW

Hi all,
PC companion detect a new FW for my arc. The ICS, great, but :
PC companion does not allow me to update because my system if modified (?)
I previously downgrade (?) from 4.0.2.A.0.69 to 62 and now I wonder what should I do to upgrade to ICS?
I've read lot of topic but I'm not able to understand either what is a boot unlock, I should I have to do to unlock, what is CFW of I don't know what.
As you can read, I'm a noob and english is not my mother tongue
Any help is welcome
If you have an unlocked bootloader?? If so dont update via PC companion. It will cause problems.
If you want to upgrade to ICS , jsut download the official ICS (.431) tft file and flash it with flash tools(locked/unclocked) and it shd take you to ICS.
I 've try many things and as a result I thing my bootloader is unlocked
(I used flashtools and a tft file from this forum)
So if I understand, I need to do the same for ICS.
I hope I will find a ICS to flash
Thank you for your answer
Just being able to use Flashtool or flashing .ftf doesn't mean that your bootloader is unlocked. Because even those on locked bootloaders can use it.
If you're not certain whether you unlocked your bootloader or not, then there's a good chance that your bootloader is STILL locked.
And you can find the stock ICS ROM in this thread. I'd suggest going with General Global World as there's little bloatware and performance is good.
Cheers!
Thank you for the link.
Not sure about unlocking effectively. I've try the official sony method using the url and emei but seems unsiccessfull.
I will try will GGW and maybe trying to remove boatware on a second times
TY!!!
PC Companion causes problems when trying to update to ICS.
Better use SUS (Sony Update Service).
succeed using flashtool and LT15i_4.1.B.0.431_Generic Global World.ftf from the link above!
Don't know what is teh SUS, but my next step is remove bloatware

Question for flashing : C6506 Rogers Xperia ZL

Hi guys,
I am new to android coming from apple. I am looking to update my xperia zl 4.1.2 build number 10.1.a.1.395 to android 4.2. I have never flashed the phone before but i do however rooted my phone using i believe doomlords mod. I have also an issue with the in ear peice when calling i notice the volume is extremely low when i am making calls. If someone would let me know the steps to fix this issue and the update that would be great. As far as i know i need flashtools and the 4.2 android update? Just want to know which update i would need. My phone is originally a rogers xperia zl but its been unlocked to use any carrier. The bootloader is also locked on this phone.
Thank!
Update your phone over the air. (settings, about phone, software update) and use doomlords tool to root again.
Sent from my C6506 using Tapatalk 4 Beta
Trying to get the update from OTA wont work in your case since you have never flashed the phone and are probably on the stock Roger's firmware meaning you wont see an update available until Rogers pushes their 4.2.2 update with their own bloatware which may take a while.
Just flash the latest FTF firmware C6506_10.3.A.0.423_Unbranded.ftf (stock Sony firmware) found on here on XDA and flash it with Flashtool. Then use doomlord's method to gain root. Very easy stuff... Dont wait for Rogers to update unless you want to wait forever... Carriers are usually slow to update their stuff.

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