Database Develop

[Q] Unlocked Bootloader VS Locked Bootloader.

Hey guys,
as we all know, there has been a work around to gain root access and flash custom recovery to locked bootloader devices.
The only thing i heard was, that by doing that, NFC would not work anymore (but can be fixed) and your bootloader will have the status changed to locked forever (also believe there is a fix for this)
So i just want you guys' insights on what are the advantages of bootloader unlocking apart from the above,
Cheers guys~

I'd also love to know what's not possible with a locked bootloader.
My biggest question is whether I could still use droidwall since that's what keeps me from getting huge accidental data bills.

- The NFC works, I just tried it with a credit card as well as with one of the smart tags that Sony gave with the box.
- The Bravia Engine is disabled, however there will eventually be a workaround for this one as you can already get Bravia Engine version 1 running whenever you wish even with the unlocked bootloader, not the version 2 just yet. However, my take on this is quite positive as I appreciate realistic colours more to over saturated bright and overly contrasting colours, hence why I don't like AMOLEDs for instance.
- Other than that I have not noticed anything different in my device. Mind you it's much better since the unlock, as I have already flashed a custom ROM, I'm using Revolution but there are some really good other ones too, with all the bloatware gone, you can clear the bloatware you do not want without a custom ROM. I also have a custom kernel now, using Doom's kernel with no overclocks.
- Oh and I also have a mod for configurable switches in my notifications area so no reason to go in and out of Settings application or use Sony's laggy widgets.
- The ability to use AdFree and other root requiring applications is a great plus for me as well.

I think its very confusing. My bootloader is unlockable, and i would like a custom rom, but not sure what to do, and what i will break and not break. Its a bit of a jungle.

AlienCraB said:
-
- The Bravia Engine is disabled, however there will eventually be a workaround for this one .
Click to expand...
Click to collapse
BE is DRM so umlocking means losing them forever, unless someone find how to relock BL again and restore BE
With unlocked BL you can flash any Rom and kernel.
With locked you can flash only stock based Rom and can't flash CM roms
Sent from my C6602 using xda app-developers app

abd_alazeez2002 said:
BE is DRM so umlocking means losing them forever, unless someone find how to relock BL again and restore BE
With unlocked BL you can flash any Rom and kernel.
With locked you can flash only stock based Rom and can't flash CM roms
Sent from my C6602 using xda app-developers app
Click to expand...
Click to collapse
There is a twrp for locked boot loaders now
Does that still mean we can only flash stock based ROMs?

Code:
AlienCraB said:
- The NFC works, I just tried it with a credit card as well as with one of the smart tags that Sony gave with the box.
- The Bravia Engine is disabled, however there will eventually be a workaround for this one as you can already get Bravia Engine version 1 running whenever you wish even with the unlocked bootloader, not the version 2 just yet. However, my take on this is quite positive as I appreciate realistic colours more to over saturated bright and overly contrasting colours, hence why I don't like AMOLEDs for instance.
- Other than that I have not noticed anything different in my device. Mind you it's much better since the unlock, as I have already flashed a custom ROM, I'm using Revolution but there are some really good other ones too, with all the bloatware gone, you can clear the bloatware you do not want without a custom ROM. I also have a custom kernel now, using Doom's kernel with no overclocks.
- Oh and I also have a mod for configurable switches in my notifications area so no reason to go in and out of Settings application or use Sony's laggy widgets.
- The ability to use AdFree and other root requiring applications is a great plus for me as well.
Click to expand...
Click to collapse
I read somewhere that bra via engine will still remain because the boot loader is untouched

spazzy1912 said:
There is a twrp for locked boot loaders now
Does that still mean we can only flash stock based ROMs?
Click to expand...
Click to collapse
Twrp is just a recovery, like CWM recovery
So still you can only flash stock based Rom
To flash CM Rom or any Rom that is based on CM or even AOKP roms, you need unlocked BL.
These Roms use a different kernel than stock kernel.
Unlocked BL is needed to flash these custom kernels in kernel partition
Go to XS dev section, you will see alot of Roms that need unlocked BL
Sent from my C6602 using xda app-developers app

abd_alazeez2002 said:
Twrp is just a recovery, like CWM recovery
So still you can only flash stock based Rom
To flash CM Rom or any Rom that is based on CM or even AOKP roms, you need unlocked BL.
These Roms use a different kernel than stock kernel.
Unlocked BL is needed to flash these custom kernels in kernel partition
Go to XS dev section, you will see alot of Roms that need unlocked BL
Sent from my C6602 using xda app-developers app
Click to expand...
Click to collapse
ohh i see.
so i can still flash on doomlord's kernel because it is stock based right?

spazzy1912 said:
ohh i see.
so i can still flash on doomlord's kernel because it is stock based right?
Click to expand...
Click to collapse
Sorry for confusing you like this.
I will say it in more clear way
With locked BL, the only thing you can do is to flash stock based roms.
With unlocked BL,
-can flash stock based roms,
-Custom based Roms,
-Stock based kernel
-Custom based kernel
So you can't flash doomlord's kernel with locked BL
Sent from my C6602 using xda app-developers app

abd_alazeez2002 said:
Sorry for confusing you like this.
I will say it in more clear way
With locked BL, the only thing you can do is to flash stock based roms.
With unlocked BL,
-can flash stock based roms,
-Custom based Roms,
-Stock based kernel
-Custom based kernel
So you can't flash doomlord's kernel with locked BL
Sent from my C6602 using xda app-developers app
Click to expand...
Click to collapse
Ohhh, thank you for your help

Hi, A quick question! Can I use a recovery for locked bootloader on my unlocked phone?
for example, this one: http://forum.xda-developers.com/showthread.php?t=2308493 can i use that on my unlocked bootloader?

abd_alazeez2002 said:
BE is DRM so umlocking means losing them forever, unless someone find how to relock BL again and restore BE
With unlocked BL you can flash any Rom and kernel.
With locked you can flash only stock based Rom and can't flash CM roms
Sent from my C6602 using xda app-developers app
Click to expand...
Click to collapse
I'm not kidding: After I have unlocked my Xperia Z, BE2 and music info download still work properly.:laugh:

autumntactix said:
Can I use a recovery for locked bootloader on my unlocked phone?
for example, this one: http://forum.xda-developers.com/showthread.php?t=2308493?
Click to expand...
Click to collapse
I'm not sure but doomlord suggests using a different one...
http://forum.xda-developers.com/showpost.php?p=42166335&postcount=11

mrbuddy said:
I'd also love to know what's not possible with a locked bootloader.
My biggest question is whether I could still use droidwall since that's what keeps me from getting huge accidental data bills.
Click to expand...
Click to collapse
My favourite part with an unlocked bootloader is that with proper knowledge you can handle memory handling, CPU scheduling, under or over voltages on your CPU/GPU, etc.
So really the unseen side of things, my Xperia Z goes 2.5 days with one full charge with the modded kernel I have, using AOSP with nothing unused installed.
I wouldn't have been able to achieve that with a locked bootloader.
And I did not really like how overly saturated blues became with Bravia Engine anyway, so nothing lost on that side really.
I unlocked after the first 24hours of stock use.

autumntactix said:
Hi, A quick question! Can I use a recovery for locked bootloader on my unlocked phone?
Click to expand...
Click to collapse
First off all, why have you posted a link to the S section when secondly, there is two types of recoveries you can find and should use in this section.

abd_alazeez2002 said:
Sorry for confusing you like this.
I will say it in more clear way
With locked BL, the only thing you can do is to flash stock based roms.
With unlocked BL,
-can flash stock based roms,
-Custom based Roms,
-Stock based kernel
-Custom based kernel
So you can't flash doomlord's kernel with locked BL
Sent from my C6602 using xda app-developers app
Click to expand...
Click to collapse
Hi, as a beginner, can you tell me some of the "stock based roms" that can be flashed with a locked bootloader? many thanks

krypucine said:
Hi, as a beginner, can you tell me some of the "stock based roms" that can be flashed with a locked bootloader? many thanks
Click to expand...
Click to collapse
All of them except the newer 4.2.2 leak based roms

flytomars said:
I'm not kidding: After I have unlocked my Xperia Z, BE2 and music info download still work properly.:laugh:
Click to expand...
Click to collapse
Did you unlock your Xperia z or unlock the bootloader of the z?
Sent from my C6603

[Q] Why unlocking bootloader?

Coming from the samsungs which was pretty straightforward in rooting and custom roms.
I see there are custom roms for locked bootloaders, which won't lose Bravia engine. So what are the benefits in unlocking it?

Use of more roms which only work on UB, can't loose Cwm, you can run cm android 4.2.2 and asop, ect which you can't on LB
Sent from my C6603 using xda premium

soulzero said:
Coming from the samsungs which was pretty straightforward in rooting and custom roms.
Click to expand...
Click to collapse
That's cause samsung has an unlocked bootloader straight out of the box.
Locked bootloader = no custom kernels at all

AOSP for locked bootloader

Hello There!
So i just got my new xperia Z from my company and it is for two years and i had to pay for it anyway.
I have choosen this one cause i knew its a good phone and have loads of devs, and i didnt check if there is any aosp for locked bootloader i was sure, and i thought i can unlock mine anyway.
I was about to unlock my bootloader and i saw i cant do it i googled for 3-4 hours , and there is no way to unlock it even if you pay for it or something.(T-mobile hungary )
At the moment there is no AOSP rom for locked bootloader.
Here is my question : Sony updates this phone really fast, almost as AOSP or 1-2 months i see some good devs making sony custom roms for our device, Can any of you make AOSP only pure cyanogenmod thaths all i need. I'm Sick of the bloatware that sony has in their roms.
I just boot up my phone and half the memory gone.
Are the sony built kernels and custom roms kernels so different? Is it ompossible to make an AOSP rom ?
I would love to see one , i will definately use it and test it for bugs.
I know **** about android development (or any other) but i will get into because i dont want to use ****ty sony roms for 2 years
Cheers!
Viktor

There is no way to get AOSP on a locked device. Is not only that the kernels are different, but the thing is locked bootloaders only run signed Sony kernel.
If memory is your main concern, flash a debloated, stripped down version of Sony's roms.

DrKrFfXx said:
There is no way to get AOSP on a locked device. Is not only that the kernels are different, but the thing is locked bootloaders only run signed Sony kernel.
If memory is your main concern, flash a debloated, stripped down version of Sony's roms.
Click to expand...
Click to collapse
yea but we should build an aosp rom for the sony kernel or is it that hard?

in theory its very possible but what will you really gain?
You will have to use pretty much all original binary blobs, and will end up with some framework changes.
is there anything specific in an aosp build that you want?
the Z has one of the most closest none GPE roms around as it is..
as others have said why not just debloat or install a debloated rom?

fards said:
in theory its very possible but what will you really gain?
Click to expand...
Click to collapse
I've mentioned this before but it never went anywhere, if Sony's AOSP kernel is signed then what stops it being put in an ftf to be flashed, and if that was possible would that not open the way to getting locked down bootloaders unlocked?

XperienceD said:
I've mentioned this before but it never went anywhere, if Sony's AOSP kernel is signed then what stops it being put in an ftf to be flashed, and if that was possible would that not open the way to getting locked down bootloaders unlocked?
Click to expand...
Click to collapse
It looks to me that Sony haven't provided anything for the AOSP kernel but the sources via their AOSP website (I could be wrong, but I don't see any kernel images on their github, only sources).
In that case, anyone wanting to use it has to build it themselves, therefore it will have to be signed by whoever builds it.
So, if everything I said is correct, then it's no use for getting this running on locked bootloaders.
Sent from my C6603 using Tapatalk 4

kingvortex said:
It looks to me that Sony haven't provided anything for the AOSP kernel but the sources via their AOSP website (I could be wrong, but I don't see any kernel images on their github, only sources).
In that case, anyone wanting to use it has to build it themselves, therefore it will have to be signed by whoever builds it.
So, if everything I said is correct, then it's no use for getting this running on locked bootloaders.
Sent from my C6603 using Tapatalk 4
Click to expand...
Click to collapse
Agreed. Now if we could figure out the Sony keys, or someone leaks them, it is a different story.

nikc0069 said:
Agreed. Now if we could figure out the Sony keys, or someone leaks them, it is a different story.
Click to expand...
Click to collapse
I think either situation is highly unlikely.
I don't think it's at all possible to "figure out" keys. If it was, the security wouldn't be very.....secure.
As for leaks from Sony, has this ever happened, for any device in their history?
Sent from my C6603 using Tapatalk 4

kingvortex said:
I think either situation is highly unlikely.
I don't think it's at all possible to "figure out" keys. If it was, the security wouldn't be very.....secure.
As for leaks from Sony, has this ever happened, for any device in their history?
Sent from my C6603 using Tapatalk 4
Click to expand...
Click to collapse
No I don't think it has. You never know when someone might make a mistake, but I'd agree it isn't something to hold out hope for. Kexec or similar is the best bet, otherwise no AOSP for the locked bootloaders!

fards said:
in theory its very possible but what will you really gain?
You will have to use pretty much all original binary blobs, and will end up with some framework changes.
is there anything specific in an aosp build that you want?
the Z has one of the most closest none GPE roms around as it is..
as others have said why not just debloat or install a debloated rom?
Click to expand...
Click to collapse
Hey!
I use one of the debloated rom i gues (monxified)
and i open the process list :
device usage
overheat control
warrantytimeservice
small apps manager
smart search my xperia
location based wifi
semc cnap provider
theese are the useless running apps
so useless installed apps list :
i was able to start to write the list but it will take like 30 minutes
anyway FXP rom size 246 mb + gapps 88mb 334 mb
monxified rom : 545 mb existenze ultra 741mb excelzius 643 mb and thoose megabytes mostly sony bloatware
can u point me to a rom that doesnt have theese inside?
cheers,
Viktor

fulii said:
Hey!
I use one of the debloated rom i gues (monxified)
and i open the process list :
device usage
overheat control
warrantytimeservice
small apps manager
smart search my xperia
location based wifi
semc cnap provider
theese are the useless running apps
so useless installed apps list :
i was able to start to write the list but it will take like 30 minutes
anyway FXP rom size 246 mb + gapps 88mb 334 mb
monxified rom : 545 mb existenze ultra 741mb excelzius 643 mb and thoose megabytes mostly sony bloatware
can u point me to a rom that doesnt have theese inside?
cheers,
Viktor
Click to expand...
Click to collapse
Flash any AOSP/CM based ROM from here - http://forum.xda-developers.com/forumdisplay.php?f=2088

Drummerjed said:
Flash any AOSP/CM based ROM from here - http://forum.xda-developers.com/forumdisplay.php?f=2088
Click to expand...
Click to collapse
And that is exactly what he can't do, as he can't unlock the bootloader... All those ROMs need a custom kernel...

Felimenta97 said:
And that is exactly what he can't do, as he can't unlock the bootloader... All those ROMs need a custom kernel...
Click to expand...
Click to collapse
Oops, didn't realise he was the OP

Why didn't you buy one which could be bootloader unlocked?

As i said its from my company and my company is a child company of the Hungarian T mobile so im ****ed anyway
Sent from my C6603 using XDA Premium 4 mobile app

My Xperia Z with 100% stock firmware and lots of extra apps only has 1 GB of RAM in use. That's the advantage of having 2 GB of RAM, you don't have to worry about memory usage. So just chill out and enjoy your awesome phone
AOSP would ruin a lot of the nice features and design of this phone anyway.
Sent from my Xperia Z using Tapatalk 4

Just to let you guys know, it is possible to run AOSP Roms on locked Bootloaders. I was running CM10 on my Razr (XT910) and Motorola Devices where always locked untill the HD.
Just have an look, what these Guys meanwhile rockin' on this locked Device
http://forum.xda-developers.com/showthread.php?p=39998592
It was an long way to crack Motos Bootloader, but there're some Bad Ass Devs and they kicked Motos Ass
Gesendet von meinem C6603 mit Tapatalk 2

yea and there were good working stock based roms, even dualboot etc with locked bootloader. but here somebody said it before no dev will bother about locked bootloaders if the device can be unlocked for the 70% of the Z users, and razr couldn't be unlocked.
anyway monixified is a great rom its fast and etc but i miss cyanogenmod features like theme chooser and nice weather on the lockscreen

so anyone doing this? or nope?

well you can always remove them yourself with titanium or a root file browser ? remember to backup rom/apps first, as there can be consequences from removing system apps.. alternately try googling for sony stock sys apps that are safe to remove

[Q] about unlocked bootloader

Hey guys.
I want to unlock Bootloader but i have a few questions.
What can i do when i unlocked Bootloader?
For example can i install any stock rom when phone bricked or anytime?
And What can't i do?
Last question is What shouldn't i do? i mean What i do my phone is bricked?
I'm so sorry for my bad english :/ Plz help me.

With an unlocked bootloader you are able to install custom Kernels. CyanogenMod based ROMS require a diffrent kernel and this requires an unlocked bootloader.
You need to follow this tutorial: http://forum.xda-developers.com/showthread.php?t=2354721
AND REMEMBER TO BACKUP YOUR TA PARTITION!!!!!!

mrjraider said:
With an unlocked bootloader you are able to install custom Kernels. CyanogenMod based ROMS require a diffrent kernel and this requires an unlocked bootloader.
You need to follow this tutorial: http://forum.xda-developers.com/showthread.php?t=2354721
AND REMEMBER TO BACKUP YOUR TA PARTITION!!!!!!
Click to expand...
Click to collapse
thank you.
so, we say my phone is bricked. can i install any ftf ?
by the way i examining this guide.
sorry for my bad english. :/

Yes with an softbrick you can flash any ftf see my guide in signature bellow
Verstuurd vanaf mijn C5303 met Tapatalk

mrjraider said:
With an unlocked bootloader you are able to install custom Kernels. CyanogenMod based ROMS require a diffrent kernel and this requires an unlocked bootloader.
You need to follow this tutorial: http://forum.xda-developers.com/showthread.php?t=2354721
AND REMEMBER TO BACKUP YOUR TA PARTITION!!!!!!
Click to expand...
Click to collapse
...Except you CAN get CM 10.2, CM 11, AOKP, PAC-Man Rom, SlimBean and SlimKit on Locked Bootloader thanks to @bagyusz. His roms have been featured on the XDA portal for allowing SPs with locked bootloader to have all that goodness. If you want one of those, and you can't unlock your bootloader, it's all good!

thehritzinator said:
...Except you CAN get CM 10.2, CM 11, AOKP, PAC-Man Rom, SlimBean and SlimKit on Locked Bootloader thanks to @bagyusz. His roms have been featured on the XDA portal for allowing SPs with locked bootloader to have all that goodness. If you want one of those, and you can't unlock your bootloader, it's all good!
Click to expand...
Click to collapse
True but not all the CM based ROMS are Lockedbootloader compatible (yet)..

Flashing ROM with Locked Bootloader?

Hi there,
At the moment I'm running Android 4.4.2 Stock ROM, but I want to switch to MIUI V5. I would like to know if it's possible to do this while having a locked Bootloader.
P.S.: First I used the towelroot-method to get root acces, then I installed SuperSU and CWM Recovery. So that's already done.

It should be possible. Take a look at this thread: http://forum.xda-developers.com/xpe...-miu-z-4-2-2-multilang-v2-5-10-3-1-2-t2467408
Just follow the steps for locked bootloaders.

gripfly said:
It should be possible. Take a look at this thread: http://forum.xda-developers.com/xpe...-miu-z-4-2-2-multilang-v2-5-10-3-1-2-t2467408
Just follow the steps for locked bootloaders.
Click to expand...
Click to collapse
Thank you for the fast reply! I'll try it. By the way are there any bugs in the ROM I've mentioned? I can't read any Chinese and Google Translation doesn't translate that well.

Isn't MIUI based on AOSP/CM? If it is, then you cannot flash it on a locked bootloader.
Edit - It seems the rom that gripfly linked to can be flashed on locked bootloaders. Disregard my post. ?
Sent from my C6603 using Tapatalk

kingvortex said:
Isn't MIUI based on AOSP/CM? If it is, then you cannot flash it on a locked bootloader.
Edit - It seems the rom that gripfly linked to can be flashed on locked bootloaders. Disregard my post. ?
Sent from my C6603 using Tapatalk
Click to expand...
Click to collapse
Too bad it's an outdated ROM. I would love to see the newest MIUI ROM running on this beauty, but I'm too scared to try it out and mess it up, and then risking to lose the DRM key.
Edit: Are there any good ROMS with nice GUI apart from Sony's UI for the Xperia Z? The MIUI ROM V5 is based on Android 4.2.2, which is more a downgrade than an upgrade...

tally114 said:
Too bad it's an outdated ROM. I would love to see the newest MIUI ROM running on this beauty, but I'm too scared to try it out and mess it up, and then risking to lose the DRM key.
Edit: Are there any good ROMS with nice GUI apart from Sony's UI for the Xperia Z? The MIUI ROM V5 is based on Android 4.2.2, which is more a downgrade than an upgrade...
Click to expand...
Click to collapse
There are many good ROMs on the forum.
Actually, UI varies from person to person so it's very difficult to say which one is better, you can search in the forum and find a suitable one.
As for me, I highly recommend PA which include many good features.

Locked bootloader means stock based ROMs only.
Sent from my C6606 on 4.4.2 KitKat