Do I need to unlock the bootloader if I want to downgrade to GB from ICS?
and is there any other way to unlock the bootloader without the official SONY method?
TJ_bab said:
Do I need to unlock the bootloader if I want to downgrade to GB from ICS?
and is there any other way to unlock the bootloader without the official SONY method?
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No. The only reason you have to unlock your bootloader is in case you want to install a custom kernel, otherwise there is no reason. O don't know if there is any other way to unblock bootloader except the one from Sony and honestly I think there is no reason.
To downgrade from ics to gbe you have to install flashtool on your pc and download the gb ftf file and flash it.
There is a tutorial on YouTube on how to use flashtool on arc and the way is pretty similar to st27. The only thing you have to do is find on st27 development thread the drivers and the gb Rom. Here is the YouTube tutorial
http://m.youtube.com/#/watch?v=JmmThXTWu74&desktop_uri=/watch?v=JmmThXTWu74
Related
I just read on the Sony Developer site that the ICS update will not be available for those with an unlocked bootlader WTF ?
"Also, if you unlock the boot loader, you will not be able to download and install the final Ice Cream Sandwich software upgrade for Xperia™ phones."
Just look for the article "ICS beta ROM now available for unlocked Xperia™ PLAY smartphones" .. it's about 3/4 down the page :?(
Good thing I unlocked via Testpoint method...
I think it could be possible that SEUS or PC Companion are checking IMEI, if the phone was unlocked via Sony...
simple relock won't do it I guess :/
But don't worry, a few days after our devs will come up with a flashable generic and prerooted rom
MrBrightside said:
But don't worry, a few days after our devs will come up with a flashable generic and prerooted rom
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definitely.
in xda we trust
o0o.paw said:
I just read on the Sony Developer site that the ICS update will not be available for those with an unlocked bootlader WTF ?
"Also, if you unlock the boot loader, you will not be able to download and install the final Ice Cream Sandwich software upgrade for Xperia™ phones."
Just look for the article "ICS beta ROM now available for unlocked Xperia™ PLAY smartphones" .. it's about 3/4 down the page :?(
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Click to collapse
That is because DRM keys are lost, which are needed to use PC Companion and Update Service to update phone firmware.
It is not sure, if relocking will do the deal or not, as least not before it is released.
Relocking with Flashtool will definitely work & also if yhu unlock BL via Testpoint Method den yhu can update via SEUS, PCC!
Dude, didn't you read when unlocking bootloader? its written in big red fonts on bootloader unlock page that you will not get further updates after unlocking.
Officially, the bootloader can only be unlocked, that's why the warning with red letters.
Unofficially, it is possible to relock the bootloader and after that it's possible to update software again. I tested it multiple times.
The only thing You loose permanently is the DRM. Cheers!
zariin said:
Officially, the bootloader can only be unlocked, that's why the warning with red letters.
Unofficially, it is possible to relock the bootloader and after that it's possible to update software again. I tested it multiple times.
The only thing You loose permanently is the DRM. Cheers!
Click to expand...
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hope yhu all can now believe me now......!
is there a way to relock boot loader again??
bhovoi said:
is there a way to relock boot loader again??
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Click to collapse
Yes, you can read my tutorial, a guide is there.
Sent from my Xperia Live using xda premium
i think u must wait untill the original work rom from xperia team out.
and if u want test ics xperia u must unlock BL because this rom is porting rom and this is mod. so if u want u device still unlock i think u must wait..
Is it possible to Lock Bootloader Xperia Go again? Why do we need to unlock Bootloader for Xperia Go if the only one working rom there (zip or FTF) is exactly the same as the Sony stock rom...?
xperia_88 said:
Is it possible to Lock Bootloader Xperia Go again? Why do we need to unlock Bootloader for Xperia Go if the only one working rom there (zip or FTF) is exactly the same as the Sony stock rom...?
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you may want to read this post first: http://forum.xda-developers.com/showthread.php?t=1527159
yes it is possible to relock bootloader for any android but that depends whether it is developed by devs and available yet for that phone. try find out at the development section for your phone model.
unlocking bootloader is required if you want to root, for superuser function, customize app functions and etc, which cannot be done in locked bootloader. you also don't have to unlock bootloader if you only want to upgrade your phone or change your stock rom to other region stock roms, just flash the file using flashtool. hope this helps
adhawk said:
you may want to read this post first: http://forum.xda-developers.com/showthread.php?t=1527159
yes it is possible to relock bootloader for any android but that depends whether it is developed by devs and available yet for that phone. try find out at the development section for your phone model.
unlocking bootloader is required if you want to root, for superuser function, customize app functions and etc, which cannot be done in locked bootloader. you also don't have to unlock bootloader if you only want to upgrade your phone or change your stock rom to other region stock roms, just flash the file using flashtool. hope this helps
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Thanks!
Hi!
I've got a problem with unlocking my XPERIA U. It has Orange branded firmware, Android 2.3.7, and I'd like to change it to for example ICS. I wanted to unlock my bootloader, but I can see a message: Bootloader unlock allowed: No.
Is there any possibility to unlock it, or not? And why this phone has no possibility to do it?
Regards,
linoskoczek
Unlock = debrand? If yes, just flash stock ROM 1.54 or 1.75 with flashtool.
You can make branded ftf backup before flashing, just in case.
BTW why do u want to unlock bootloader?
Odp: [Q] Not possible to unlock phone - is there anyother method to do it?
No, you can't unlock your phone. Probably you have simlock and locked bl by operator(Orange). But you can flash fw without Orange apps etc. Just go to development section and download latest ICS fw.
Sent from my LT22i using xda-developers app
Ahh that ****ty orange...
I've flashed it to ICS, but still unlocking is not possible. Anyway, do you think http://forum.xda-developers.com/showthread.php?t=1886460 will root the phone? It's just a one thing I can do without unlocking xperia.
linoskoczek said:
Ahh that ****ty orange...
I've flashed it to ICS, but still unlocking is not possible. Anyway, do you think http://forum.xda-developers.com/showthread.php?t=1886460 will root the phone? It's just a one thing I can do without unlocking xperia.
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Click to collapse
I think the only thing you can't do in SXP with locked bootloader is flashing custom kernel. So, the answer is yes, you can root the phone without unlocking bootloader as well as e.g. install CWM recovery.
my phone fw version is 6.2.A.1.100
I find that lots of root for JB 4.1 Xperia P required unlock bootloader
How can I relock it after root successful?
or if you can, please provide me an easy root method for me....I am lazy guys
Flashtool will do all
vcfirstben said:
my phone fw version is 6.2.A.1.100
I find that lots of root for JB 4.1 Xperia P required unlock bootloader
How can I relock it after root successful?
Click to expand...
Click to collapse
Flashtool will do all the lock and unlock process!
Just backup the DRM keys / TA partition first, here's my thread for detailed info.
http://forum.xda-developers.com/showthread.php?t=2326593
I recently rooted my Xperia P (JB 4.1.2, unlocked bootloader) using the ThP's JB_stock_autoroot.img available here.
Now when I tried to install the updates using PCC, it said that modified software installed and hence cancelled the update. Is it because of the unlocked bootloader or rooting the phone?
Cheers,
Saurav
saurav86 said:
I recently rooted my Xperia P (JB 4.1.2, unlocked bootloader) using the ThP's JB_stock_autoroot.img available here.
Now when I tried to install the updates using PCC, it said that modified software installed and hence cancelled the update. Is it because of the unlocked bootloader or rooting the phone?
Cheers,
Saurav
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Unlocking bootloader! Once you unlock bootloader you cant update via pc companion! You must update with flashtool!
AndroidNoob69 said:
Unlocking bootloader! Once you unlock bootloader you cant update via pc companion! You must update with flashtool!
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Thanks for the reply...
So now if i wish to relock the bootloader keeping my phone rooted, what steps do i need to follow? I have downloaded the file LT22i_relock_bootloader.ftf which can help me relock the bootloader. Anything else that I should keep in mind before/while/after flashing this file?
Cheers,
Saurav
saurav86 said:
Thanks for the reply...
So now if i wish to relock the bootloader keeping my phone rooted, what steps do i need to follow? I have downloaded the file LT22i_relock_bootloader.ftf which can help me relock the bootloader. Anything else that I should keep in mind before/while/after flashing this file?
Cheers,
Saurav
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If i am not wrong you must be on full stock (kernel and rom) and you relock. You can search around as i have not relocked my bl before as i never unlocked it.
I am back. Ignore forum signature 1st line.
You can create the FTF from PCC files
http://mytechencounters.wordpress.c...eate-an-ftf-file-of-your-xperia-ics-firmware/
http://forum.xda-developers.com/showthread.php?t=2188129
I have flashed the relock file more than once without any problem.
You can root JB .100 with DooMLoRD Easy Rooting Toolkit