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[SOLVED] Locking bootloader

I'm selling my TF300T to a second hand shop, but I want to lock the bootloader as I think they will refuse the device with the "This device is unlocked" text.
THE DEVICE WORKS FINE. I'm not trying to trick anyone into purchasing a broken device. I know there are hundreds of post like this, but none of them actually tell you how to or if it's even possible to lock the bootloader.
Thanks,
Daniel

Daniol71 said:
I'm selling my TF300T to a second hand shop, but I want to lock the bootloader as I think they will refuse the device with the "This device is unlocked" text.
THE DEVICE WORKS FINE. I'm not trying to trick anyone into purchasing a broken device. I know there are hundreds of post like this, but none of them actually tell you how to or if it's even possible to lock the bootloader.
Thanks,
Daniel
Click to expand...
Click to collapse
Cannot be done once unlocked, all Transformer tablets are unlocked forever.
Unless something very bad happens, there is no way to relock the bootloader ....
Thx Josh

Thank you for your help

lj50036 said:
Cannot be done once unlocked, all Transformer tablets are unlocked forever.
Unless something very bad happens, there is no way to relock the bootloader ....
Thx Josh
Click to expand...
Click to collapse
Actualy bootloader can be relocked. Refurbished devices are those, thats why is a major problem with unlocking

lj50036 said:
Cannot be done once unlocked, all Transformer tablets are unlocked forever.
Unless something very bad happens, there is no way to relock the bootloader ....
Thx Josh
Click to expand...
Click to collapse
Clamor said:
Actualy bootloader can be relocked. Refurbished devices are those, thats why is a major problem with unlocking
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Click to collapse
Yep, if you say so...

lj50036 said:
Yep, if you say so...
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Click to collapse
Actually, is there a good factory reset tutorial on xda? I haven't found one yet and I don't really trust other ones on the internet.
I would like to:
-unroot
-flash original firmware
-flash original bootloader

Daniol71 said:
Actually, is there a good factory reset tutorial on xda? I haven't found one yet and I don't really trust other ones on the internet.
I would like to:
-unroot
-flash original firmware
-flash original bootloader
Click to expand...
Click to collapse
Yes just flash the blob from asus but this is not going to lock your bootloader ...
Thx Josh

[Q] How do I root my Sony Xperia Z3 d6603?

Hi
I just got my phone, but missing the benefits of rooting.
Can anyone tell me how to unlock the bootloader and then root my phone?
Found a lot of links, but not sure which are secure and not to use.

Here's where you go to unlock your bootloader - http://developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader/
Once unlocked, you can flash root or do whatever at that point.
Warning though, you will lose your DRM keys in this process, if you don't know what that means, do some research

se1000 said:
Here's where you go to unlock your bootloader - http://developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader/
Once unlocked, you can flash root or do whatever at that point.
Warning though, you will lose your DRM keys in this process, if you don't know what that means, do some research
Click to expand...
Click to collapse
Is their any way to back them up? So if I ever regret, I can get them back?
Also, is it possible or will it ever be possible to root with an locked bootloader?

Faspaiso said:
Is their any way to back them up? So if I ever regret, I can get them back?
Also, is it possible or will it ever be possible to root with an locked bootloader?
Click to expand...
Click to collapse
You need root to backup DRM keys.
You cant get root without unlocking the bootloader yet.
Youll lose DRM keys when you unlock the bootloader.
If you cant take losing your DRM keys do not unlock and root.

Chadneu said:
You need root to backup DRM keys.
You cant get root without unlocking the bootloader yet.
Youll lose DRM keys when you unlock the bootloader.
If you cant take losing your DRM keys do not unlock and root.
Click to expand...
Click to collapse
Thanks, I will wait.
Last question. I got Samsung before and I was able to update my phone with Kies after rooting. Is their any way to update Sony devices when rooted?
Thanks

Flashtool or PC Companion. I prefer the latter.

russell664 said:
Flashtool or PC Companion. I prefer the latter.
Click to expand...
Click to collapse
You sure? As the DRM keys doesn't matter for me, as I don't really use the camera a lot.
But when I unlock bootloader on Sonys website, it tells me I would not be able to get updates from that. But i'm still able to get them with the PC companion?
Just to make sure, as I really want android 5.0 when it comes out.

Faspaiso said:
You sure? As the DRM keys doesn't matter for me, as I don't really use the camera a lot.
But when I unlock bootloader on Sonys website, it tells me I would not be able to get updates from that. But i'm still able to get them with the PC companion?
Just to make sure, as I really want android 5.0 when it comes out.
Click to expand...
Click to collapse
You can't update with PC companion if you have unlocked your booloader. Your phone will be bricked!
Sent from my iPad using Tapatalk HD

eawert said:
You can't update with PC companion if you have unlocked your booloader. Your phone will be bricked!
Sent from my iPad using Tapatalk HD
Click to expand...
Click to collapse
You sure? So if I unlock my bootloader, their is no way for me to get Android 5.0?

Faspaiso said:
You sure? So if I unlock my bootloader, their is no way for me to get Android 5.0?
Click to expand...
Click to collapse
No way to know for sure until someone tries. But with the Z2, you just have to relock your bootloader (might need to revert to a stock kernel first) and then software updates work fine.

Faspaiso said:
You sure? So if I unlock my bootloader, their is no way for me to get Android 5.0?
Click to expand...
Click to collapse
There will always be FTF files shared on XDA and you can use flashtool with an unlocked bootloader.

Know somebody how can I root my z3 with latest ftf... 77? Please help!!

Twenga said:
Know somebody how can I root my z3 with latest ftf... 77? Please help!!
Click to expand...
Click to collapse
You do it the only way it is possible
Unlock the bootloader via the official way, flash a custom kernel

My bootloader is already unlocked, where can I get a custom kernel? My z3 was root with ftf.... 98 after upgrade to.... 77 I lost my root! Thank you for helping!!

Twenga said:
My bootloader is already unlocked, where can I get a custom kernel? My z3 was root with ftf.... 98 after upgrade to.... 77 I lost my root! Thank you for helping!!
Click to expand...
Click to collapse
Take a look in the development section

In need of some help, I wanted to root my z3 again, I've downgraded back to .77 but completely forgot how I done it last time, I created a few pre-rooted flashables (.77, .690 & .726) but I'm having trouble finding how to install custom recovery.. Any help would be greatly appreciated
Ps. Sorry to hijack your post

hey people...one question..
can i get only root access to my z3 ,without anything else?? i want only get rid of ads!!?? and how?? please help
i'm not interested in new kernel or rom change!? goes that so???

robertrobi said:
hey people...one question..
can i get only root access to my z3 ,without anything else?? i want only get rid of ads!!?? and how?? please help
i'm not interested in new kernel or rom change!? goes that so???
Click to expand...
Click to collapse
There is no need to spam multiple topics.
YES, it can be done. NO, we can't tell you how because you didn't post your phone model or Android version.

robogo1982 said:
There is no need to spam multiple topics.
YES, it can be done. NO, we can't tell you how because you didn't post your phone model or Android version.
Click to expand...
Click to collapse
Hej robogo1982, jesi dobio moju poruku u privat?

My Xperia Z5 bootloader unlock status : No, How i can root my device?

Hello!
i've a Xperia Z5
My bootLoader unlock allow Status is No.
How i can change this to yes and How i can root my device.
Is there any way to unlock the bootloader?

maxi65 said:
i've a Xperia Z5
My bootLoader unlock allow Status is No.
How i can change this to yes and How i can root my device.
Is there any way to unlock the bootloader?
Click to expand...
Click to collapse
Hi,
-First you can't change it to yes
-Second You can't root your device for the time being cause you need an unlocked bootloader
-Third there's no way to unlock a bootloader unless you have "Unlocked allow yes"
-Fourth be polite next time and say at minimum "Hello" please

Assalam o alaikum!
I've found a software on YouTube to change bootloader status no to yes

maxi65 said:
Assalam o alaikum!
I've found a software on YouTube to change bootloader status no to yes
Click to expand...
Click to collapse
just try unlocking, it can't do any harm

L33Tgod said:
just try unlocking, it can't do any harm
Click to expand...
Click to collapse
I don't think so, we're talking about bootloader so it can f*cked up anytime I think it would be better to don't play with it if we're not sure.
This is just an advice, do what you want to do after that, I'm just giving my thought no need to follow it if you don't want to

What is the logic behind this?
I mean some devices are unlockable and some are not!
What this actually mean?

Well! Can i install custom recovery on locked bootloader?

maxi65 said:
Well! Can i install custom recovery on locked bootloader?
Click to expand...
Click to collapse
Nope, you need to unlock the bootloader in order to flash anything.

So it simply means i can't flash any recovery,rom or root my device

That pretty much mean you can't do anything right now sorry bro

It means I've to sale out my device
And buy other brand like LG or HTC

Or exchange it against another unlockable one ?
I don't know, do as you like, sorry for you, just bad luck

http://bootloaderunlock.com/
I've found a video tutorial on YouTube with a link to download software to unlock the bootloader of devices those shows the status "Bootloader unlock allow:No"
Here is the video link

Beware a lot of fake videos are running through the Internet, I warn you, but as I said before do as you like.
If I were you I would not play with bootloader, either I change phone, or I wait for a locked bootloader tuto.

maxi65 said:
http://bootloaderunlock.com/
I've found a video tutorial on YouTube with a link to download software to unlock the bootloader of devices those shows the status "Bootloader unlock allow:No"
Here is the video link
Click to expand...
Click to collapse
Did you try this? I found this video a while ago, decided not to try it

Why not to try it?

Okay now i decided to not to play with my z5 and change my device

Wise choice, still sorry for you mate

Thanks but this is definitely my last device from sony

This ain't Sony who's responsible, this is your provider.
I'm French I have a Z5 (no prenium no compact)
From Bouygues Télécom, and it ain't locked I'm actually rooted running a custom Rom everything is fine.
This is between you and your luck, you and your provider

Bootloader relock

Any one know how to relock the bootloader for a xperia xpz?

If you unlocked because you wanted root or custom firmware and lost the sony features for camera and want to revert back. You cannot do so until there is an drm fix or if you had your ta backed up. relocking will do nothing.

CKkio23 said:
If you unlocked because you wanted root or custom firmware and lost the sony features for camera and want to revert back. You cannot do so until there is an drm fix or if you had your ta backed up. relocking will do nothing.
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Click to collapse
I know but maybe i can go through the warranty

Let1107 said:
I know but maybe i can go through the warranty
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Click to collapse
What warranty? As soon as u unlocked the bootloader the warranty is no longer valid as per the terms and conditions u read when u done it

But when you do backup of DRM keys first of course if it possible. And restore them before give Phone on warranty. And relock bootloader warrianty will be works. But if you lose DRM key without backup. The bootloader not be relock.

CKkio23 said:
If you unlocked because you wanted root or custom firmware and lost the sony features for camera and want to revert back. You cannot do so until there is an drm fix or if you had your ta backed up. relocking will do nothing.
Click to expand...
Click to collapse
So, is it possible at this moment to backup the DRM keys?

Legdotus said:
So, is it possible at this moment to backup the DRM keys?
Click to expand...
Click to collapse
No

Oh well, let's hope they find a god damn way to do it. Using an unrooted phone is so uncool.

Mackay53 said:
No
Click to expand...
Click to collapse
Actually, idk if this will work bc it doesnt use 'real' drm keys, but theres always this: https://forum.xda-developers.com/crossdevice-dev/sony/xperia-z1-z2-z3-series-devices-drm-t2930672 - yall know if it will work? (pls dont be rude or anything just trying to help)

b_rad42 said:
Actually, idk if this will work bc it doesnt use 'real' drm keys, but theres always this: https://forum.xda-developers.com/crossdevice-dev/sony/xperia-z1-z2-z3-series-devices-drm-t2930672 - yall know if it will work? (pls dont be rude or anything just trying to help)
Click to expand...
Click to collapse
There's a hack/mod here that offers a DRM fix, but no DRM restoration. https://forum.xda-developers.com/xz...hack-mod-sony-xperia-xz-premium-twrp-t3695171
Basically we can root now. I think you can just relock the bootloader (to remove the unlocked message on boot thing) if you're going to send your device in for repairs.

Thread cleaned.

iArvee said:
I think you can just relock the bootloader (to remove the unlocked message on boot thing) if you're going to send your device in for repairs.
Click to expand...
Click to collapse
No, that required the keys which are lost forever.

FartyParty said:
No, that required the keys which are lost forever.
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Click to collapse
Ah, I stand corrected then. What happens if you DO try to relock the bootloader? It will simply fail? Or brick the phone?

iArvee said:
Ah, I stand corrected then. What happens if you DO try to relock the bootloader? It will simply fail? Or brick the phone?
Click to expand...
Click to collapse
Nothing.

unroot?

How do i relock bootloader and unroot?

Easiest way is to flash the factory image.

ctfrommn said:
Easiest way is to flash the factory image.
Click to expand...
Click to collapse
I thought the locked/unlocked bootloader setting was "sticky" though. Is that true?

blksith0 said:
I thought the locked/unlocked bootloader setting was "sticky" though. Is that true?
Click to expand...
Click to collapse
You should now lock the bootloader for security...

Maybe this question deserves its own thread, but
Why is an unlocked bootloader insecure?

blksith0 said:
Maybe this question deserves its own thread, but
Why is an unlocked bootloader insecure?
Click to expand...
Click to collapse
Simple, it allows anyone with physical access to your phone the ability to flash basically anything on it. That said, Ive unlocked every device Ive owned immediately after getting it.