[Q] few questions about lt18i - Xperia Arc Q&A, Help & Troubleshooting

I have a limited time to root an arc s and i need few answers please:
1 if the bootloader is locked ,it is any chance to make sim unlock?
2 i already made root but i don.t know how you flash custom kernel or wifi modules(install from zip?)... in which mode should be phone putt? ( i tried with flashtool in fastboot mode and doesn.t rebbot via adb or fastboot)

you can't flash custom kernels or wifi modules with a locked bootloader

you should unlocked the bootloader. it really is easier when you're going to install custom rom or kernel

1.your sim will still be locked
2.unlock bootloader through unlockbootloader(dot)sonymobile(dot)com. you may relock if you want through this method.

How I unlock bootloader? I put the code *#*#78... and say bootloader unlock:no

then the only way is through testpoint. http://forum.xda-developers.com/showthread.php?t=1551494&highlight=bootloader
but this is way risky.
What is your firmware version? .587 can be unlocked as far as i know.

zgmfx20 said:
then the only way is through testpoint. http://forum.xda-developers.com/showthread.php?t=1551494&highlight=bootloader
but this is way risky.
What is your firmware version? .587 can be unlocked as far as i know.
Click to expand...
Click to collapse
.587 firmware

zgmfx20 said:
then the only way is through testpoint. http://forum.xda-developers.com/showthread.php?t=1551494&highlight=bootloader
but this is way risky.
What is your firmware version? .587 can be unlocked as far as i know.
Click to expand...
Click to collapse
Firmware has nothing to do with the bootloader.

Related

[Q] nAa-r2 recovery CWM + SE TWEAKED v0.7 = Possible?

in the thread of nAa-r2 CWM for mini/pro/active/arc it say you can install stock rom in the recovery, and i searched for stock rom and i bumped into SE tweaked thread and i am confused if this are compatible. is SE TWEAKED really a stock rom? and one thing SE tweaked thread says that the requirement is unlocked bootloader, mine is still locked but i have fastboot and cwm.. what does that mean? enlighten me please.. thanks..
i think i also need a list of tweaked stock roms that can be use from nAa-r2 CWM..
thanks in advance to all who will answer my query.. ^_^
You can use that recovery on custom kernels/ROMs too.
dp94 said:
You can use that recovery on custom kernels/ROMs too.
Click to expand...
Click to collapse
no kidding?
wow.. but it says will only work on unlock bootloader.. mine is locked..
i just want to make sure that it will brick my phone..
this will be an expensive paper weight if that happens..
I've had a locked BL and that CWM recovery installed.
Then I unlocked my BL, flashed a kernel and the recovery and the backups where still there.
dp94 said:
I've had a locked BL and that CWM recovery installed.
Then I unlocked my BL, flashed a kernel and the recovery and the backups where still there.
Click to expand...
Click to collapse
my bootloader is still locked.. i want to know if i can flash it even though it is still locked.. i still have no plans of unlocking my bootloader.. maybe i have to wait a little more before i can decide of unlocking it.. i am not worrying about losing my recovery, i am concern of bricking my phone..
Yes, you can flash it even with locked BL.
Look for the program in this thread:
http://forum.xda-developers.com/showthread.php?t=1356253
dp94 said:
Yes, you can flash it even with locked BL.
Look for the program in this thread:
http://forum.xda-developers.com/showthread.php?t=1356253
Click to expand...
Click to collapse
thanks sir..
you helped me a lot..

[Q] {ARC S} Regarding Unlocking Bootloader

ok.. i have an arc s (LT18i) .62
and i was wondering.. if i unlock my bootloader will i still be able to upgrade to official ICS when it releases?
thegreatsega said:
ok.. i have an arc s (LT18i) .62
and i was wondering.. if i unlock my bootloader will i still be able to upgrade to official ICS when it releases?
Click to expand...
Click to collapse
Not with SEUS or OTA from Sony Ericsson, it wil brick your phone. But you can flash the official whit flashtool, when ICS official comes for the arc
If you relock your bootloader you can update with SEUS again. Shouldn't cause any problems
spromper said:
If you relock your bootloader you can update with SEUS again. Shouldn't cause any problems
Click to expand...
Click to collapse
But why unlock your bootloader if don't want to use costom ROMs of kernels? Whit unlocked bootloader and costom rom, or kernel, you can't update whit OTA or SEUS. And when you relock the bootloader you must first flash back to stock, or you will brick your phone to, when relocking your bootloader whit costom kernels.
HOW
spromper said:
If you relock your bootloader you can update with SEUS again. Shouldn't cause any problems
Click to expand...
Click to collapse
How will i be able to relock arc s bootloader??
thegreatsega said:
How will i be able to relock arc s bootloader??
Click to expand...
Click to collapse
Remember, when you unlock the official way, you lose your DRM, and when you relock it again you don't get back your DRM.

Bootloader unlock

So I've finally decided to unlock my bootloader so I've been reading a few threads about it but I want to be sure that I'll do it right.
I want to use this method:
http://forum.xda-developers.com/showthread.php?p=12873655
But since I'm on a branded phone I understood that I'll have to flash a generic Rom first to allow the unlocking to be done, am I correct?
I do understand that I'll lose the DRM's and stuff and that while on an unlocked bootloader I cannot use official SE programs (PCC & SEUS) because it will brick the phone correct?
After the unlocking is done I'll still have a fw installed right?
And finally, after unlocking bootloader I'll flash roms in flash mode and kernels and baseband on flashboot mode right?
Thanks for the help guys!
Sent from my LT18i using XDA

[Q] Re-lock bootloader Xperia S

Hello guys, I have a Xperia S and I unlocked my bootloader to install OpenSemc. But yesterday I went back to stock ICS using Emma, to later get a direct update to JB. But I know that I can't do this update using unlocked bootloader, because it will "brick" the phone. So I'm wondering if I re-lock the bootloader to get this update, will I be able to unlock it again using the same unlock key and install custom ROM's again?
Thanks in advanced.
the_biu said:
Hello guys, I have a Xperia S and I unlocked my bootloader to install OpenSemc. But yesterday I went back to stock ICS using Emma, to later get a direct update to JB. But I know that I can't do this update using unlocked bootloader, because it will "brick" the phone. So I'm wondering if I re-lock the bootloader to get this update, will I be able to unlock it again using the same unlock key and install custom ROM's again?
Thanks in advanced.
Click to expand...
Click to collapse
You can get the JB update even on unlocked bootloader. No need to relock the bootloader.:good:
Just avoid OTA updates though.
abcdjdj said:
You can get the JB update even on unlocked bootloader. No need to relock the bootloader.:good:
Just avoid OTA updates though.
Click to expand...
Click to collapse
Hmm, you mean through PC Companion and SEUS, or through .ftf files made by users?
But if I re-lock the BL, will I be able to unlock it again? That's what I want to really know, hehe...
the_biu said:
Hmm, you mean through PC Companion and SEUS, or through .ftf files made by users?
But if I re-lock the BL, will I be able to unlock it again? That's what I want to really know, hehe...
Click to expand...
Click to collapse
yes, you can unlock it again. and you can re-lock it again..
the_biu said:
Hmm, you mean through PC Companion and SEUS, or through .ftf files made by users?
But if I re-lock the BL, will I be able to unlock it again? That's what I want to really know, hehe...
Click to expand...
Click to collapse
If you relocked your bl you can't use PC Companion or SUS. This will brick your phone. You should use FlashTool or EMMA.
Sent from my LT26i using xda developers-app
Vaith said:
If you relocked your bl you can't use PC Companion or SUS. This will brick your phone. You should use FlashTool or EMMA.
Sent from my LT26i using xda developers-app
Click to expand...
Click to collapse
I don't think I can agree with you. 3 days ago I relock my BL and Update my phone through SUS.
Yes Pharix is right. The device may get bricked only if u try using PCC with unlocked bootloader. With locked bootloader nothing wrong should happen.
Edited:- Because of abcdjdj's comment below. But i mentioned to keep the bootloader locked just in-case ! As saying that the chances of bricking the device is higher when the bootloader is unlocked than locked bootloader.
Thanks all you guys!
auni said:
Yes Pharix is right. The device can get bricked only if u try using PCC with unlocked bootloader. With locked bootloader nothing wrong should happen.
Click to expand...
Click to collapse
Actually it is not possible to brick an unlocked BL phone by using PC companion. It won't update at all and will give a modified software error. Ota update will definitely brick.
Sent from my LT26i using xda app-developers app
so if its brick via ota, can't we recover it by flashing any other ftf via flashtool?
shravanchoudhary9 said:
so if its brick via ota, can't we recover it by flashing any other ftf via flashtool?
Click to expand...
Click to collapse
Nobody knows...
But why do you want to know that? It is always dangerous to do such a thing.
Do we need to flash the official Jb kernel.sin or the PC companion is going to install automatically wrt Ftf? I mean after relock bootloader & installing official ftf via PC companion,
Sony S said:
Do we need to flash the official Jb kernel.sin or the PC companion is going to install automatically wrt Ftf? I mean after relock bootloader & installing official ftf via PC companion,
Click to expand...
Click to collapse
PCC will install full firmware automatically (and bug-freely).

How to Relock Bootloader With TA backup

Hi guys,
I have rooted with Vroot and taken TA backup. Then i unlocked my bootloader and flashed maximus kernel...
So my question is How want to relock my bootloader with TA backup...
can anyone guide me through process..
Thanks in advance...
asrupesh said:
Hi guys,
I have rooted with Vroot and taken TA backup. Then i unlocked my bootloader and flashed maximus kernel...
So my question is How want to relock my bootloader with TA backup...
can anyone guide me through process..
Thanks in advance...
Click to expand...
Click to collapse
ta backup has nothing to do with relocking bootloader
it is used to save some features of sony
relocking has not been made yet
and why would u want to relock?
Ashwin Prabhunerurkar said:
ta backup has nothing to do with relocking bootloader
it is used to save some features of sony
relocking has not been made yet
and why would u want to relock?
Click to expand...
Click to collapse
Just incase to get the official kitkat update via SUS
As far as i know you just need to flash stock firmware back to original rom you dont need to relock bootloader to get kitkat update via sus
Sent from my D5322 using Tapatalk
geogetski666 said:
As far as i know you just need to flash stock firmware back to original rom you dont need to relock bootloader to get kitkat update via sus
Sent from my D5322 using Tapatalk
Click to expand...
Click to collapse
To use SUS, you must have a locked bootloader. For those who have an unlocked bootloader, just wait until someone uploads an FTF. FTFs can be flashed on unlocked bootloaders using Flashtool by Androxyde.
Ashwin Prabhunerurkar said:
ta backup has nothing to do with relocking bootloader
it is used to save some features of sony
relocking has not been made yet
and why would u want to relock?
Click to expand...
Click to collapse
You can easily relock the bootloader in just two steps.
Flash only the kernel via flashtool and then relock the bootloader also via flashtool.
You can't go wrong if you've used flashtool before.
arjun.arora said:
You can easily relock the bootloader in just two steps.
Flash only the kernel via flashtool and then relock the bootloader also via flashtool.
You can't go wrong if you've used flashtool before.
Click to expand...
Click to collapse
And can we flash a custom kernel like maximus kernel while relocking?
charming.arpit said:
And can we flash a custom kernel like maximus kernel while relocking?
Click to expand...
Click to collapse
The process is quite simple but do it at your own risk..
Turn on your computer's internet..
Open flashtool and select flashmode..
Select the firmware, then exclude everything but kernel (Remember only kernel should be selected, exclude everything)..
Uncheck every option in wipe..
Flash the mobile, it should take just 4-5 seconds..
Don't restart yet, disconnect your mobile..
Open BLU option in flashtool..
Connect your mobile, a dialog box will open, just click on relock..
(Remember, don't turn off the internet connection untill the bootloader is locked)
Restart your phone, it'll still be rooted and you'll be able to get all official updates..
Only thing you'll lose is the cwm recovery..

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