so I've become aware you can install recovery even with a locked bootloader.
Is it possible to boot Cyanogen mod (or other custom roms) and then go back to a stock build and still have access to the keys and other default apps or would this require unlocking the bootloader?
Snow_fox said:
so I've become aware you can install recovery even with a locked bootloader.
Is it possible to boot Cyanogen mod (or other custom roms) and then go back to a stock build and still have access to the keys and other default apps or would this require unlocking the bootloader?
Click to expand...
Click to collapse
You cannot install cyanogenmod with a locked bootloader
But with an unlocked bootloader, then yes you can backup DRM keys, install CM, then if you want to go back to stock you can restore the DRM keys after re-locking the bootloader
Related
If I'm trying to remain predominantly stock (just rooted with TWRP recovery), there's no reason to unlock the bootloader, correct?
Your phone will boot up a little bit faster if you unlock it since it no longer does a Software check at startup. You will also get rid of that custom boot screen with the lock icon that shows up when you are rooted. But other than that, if you want to stay fully stock with with just Root, there isn't too much need for unlocking your bootloader.
The only reason that i unlocked mine is to install a custom kernel so i could overclock and underclock my CPU. Other than that there is really no reason to.
The only reason that i unlocked mine is to install a custom kernel so i could overclock and underclock my CPU. Other than that there is really no reason to.
Waleslie said:
If I'm trying to remain predominantly stock (just rooted with TWRP recovery), there's no reason to unlock the bootloader, correct?
Click to expand...
Click to collapse
Really no need to unlock the bootloader unless you want to flash any custom kernel or ROM. They require the bootloader to be unlocked.
Hello,
I'm trying to install TWRP on my wife's TFT300T. Its lagging and freezing bloat apps hasn't helped. It's rooted stock 4.2 with a locked boot.
I rooted it with motochopper, and tried installing the latest 4.2 (2.6) with the terminal method and it didn't seem to work. I get an error when trying to access the recovery menu. I tried using adb/sdk, but I don't see the usb option fro fastboot.
I have the latest unlock tool from asus, but I want to be sure I need to unlock the bootloader. I have everything backed up with titanium, but I'd like to get a recovery of the stock too if possible.
If someone could confirm I need to unlock the bootloader that'd be great. It hasn't specially said that I need to unlock the bootloader in any of the 5 or 6 topics I've read. Thanks!
Sent from my OG RAZR
DiRtY UnIcOrNs, JBX kernel, Viper4android Fx
ins5736 said:
Hello,
I'm trying to install TWRP on my wife's TFT300T. Its lagging and freezing bloat apps hasn't helped. It's rooted stock 4.2 with a locked boot.
I rooted it with motochopper, and tried installing the latest 4.2 (2.6) with the terminal method and it didn't seem to work. I get an error when trying to access the recovery menu. I tried using adb/sdk, but I don't see the usb option fro fastboot.
I have the latest unlock tool from asus, but I want to be sure I need to unlock the bootloader. I have everything backed up with titanium, but I'd like to get a recovery of the stock too if possible.
If someone could confirm I need to unlock the bootloader that'd be great. It hasn't specially said that I need to unlock the bootloader in any of the 5 or 6 topics I've read. Thanks!
Sent from my OG RAZR
DiRtY UnIcOrNs, JBX kernel, Viper4android Fx
Click to expand...
Click to collapse
Long anwser
To my knowledge and for a bit of backround the reason the tf300t needs to be unlocked to install twrp is any kernel package you flash needs to be cryptographically signed, the key for this has not and wont be released by Asus, meaning if you try flash twrp without being unlocked, the bootloader looks for a signature on said package but doesn't find one so its not accepted, unlocking the bootloader disables these checks so we can flash what we want.
Short answer
Yes you need to have an unlocked bootloader to flash unsigned kernels
I have got a Z3.If we will be able to root without unlock bootloader, i will restore my drm keys.And i will unlock my bootloader and flash cyanogenmod.And i will relock bootloader, restore my drm keys on cyanogenmod.Is it possible?Sorry for bad english?
Not possible. Only a Sony rom can take use of the DRM keys. Cyanogen doesn't use Sonys algorithms.
If we are able to root without unlocking BL, we can backup the TA partition with the DRM keys and you will be able to restore them but as dashrink said, custom Roms which are not based on Sony's official firmware won't be able to use them. But you could always go back to an official (based) firmware and restore the TA partition with the DRM keys.
Well, what can we do for camera's quality on custom rom's?
LeonidasTurk said:
I have got a Z3.If we will be able to root without unlock bootloader, i will restore my drm keys.And i will unlock my bootloader and flash cyanogenmod.And i will relock bootloader, restore my drm keys on cyanogenmod.Is it possible?Sorry for bad english?
Click to expand...
Click to collapse
Once you relock the bootloader CM will not boot.
You need to keep the bootloader unlocked for custom kernels to boot
gregbradley said:
Once you relock the bootloader CM will not boot.
You need to keep the bootloader unlocked for custom kernels to boot
Click to expand...
Click to collapse
What about Xposed? I don't have to change ROM, therefore can I install Xposed and then restore DRM keys? :fingers-crossed:
Could someone just confirm that I got this right:
-if I want reaver on my phone, I have to root it
-if I root it, I lose low light camera quality
So I have to choose between rooting the phone (for installing reaver, airmon and apps like that, I don't need anything else) and having great low-light camera?
Yep.
It was true 2 weeks ago.
Now that the root method for locked bootloader becomes avaiable so you won't lose the drm keys if you root..
freddy1991 said:
It was true 2 weeks ago.
Now that the root method for locked bootloader becomes avaiable so you won't lose the drm keys if you root..
Click to expand...
Click to collapse
What do you mean?
Is it already available or?....
http://forum.xda-developers.com/showthread.php?t=3011598
To clarify:
Unlocking the bootloader wipes your DRM keys and losing those is what reduces the camera quality (among other things)
Previously, the only way to get root was to unlock the bootloader.
It is now possible (via giefroot exploit) to get root WITHOUT unlocking the bootloader. This means your DRM keys are unaffected.
Once you have root you can actually backup your DRM keys so you are then free to unlock the bootloader if you want (for customer kernels and stuff) and restore your DRM keys afterwards
3Shirts said:
To clarify:
Unlocking the bootloader wipes your DRM keys and losing those is what reduces the camera quality (among other things)
Previously, the only way to get root was to unlock the bootloader.
It is now possible (via giefroot exploit) to get root WITHOUT unlocking the bootloader. This means your DRM keys are unaffected.
Once you have root you can actually backup your DRM keys so you are then free to unlock the bootloader if you want (for customer kernels and stuff) and restore your DRM keys afterwards
Click to expand...
Click to collapse
Yes, but people should also know that restoring your DRM keys relocks the bootloader.
So, you can either have an unlocked bootloader without DRM keys (You can boot a custom kernel so can run CM etc)
or
a locked bootloader with DRM keys. (You cannot boot a custom kernel so are stuck to stock firmware)
You cannot have an unlocked bootloader with DRM keys.
Ah, thanks for the clarification, I didn't realise that. I've not unlocked my BL as I'm happy with root on stock.
Do you need to unlock for a custom rom and, if so, can you unlock, install the rom, and then relock?
3Shirts said:
Ah, thanks for the clarification, I didn't realise that. I've not unlocked my BL as I'm happy with root on stock.
Do you need to unlock for a custom rom and, if so, can you unlock, install the rom, and then relock?
Click to expand...
Click to collapse
If the custom rom relies on a custom kernel then yes you have to unlock. Custom kernels can only boot on an unlocked bootloader.
However, once you relock (Or restore the TA partition containing the DRM keys, this also relocks the boot) then you cannot boot a custom kernel so you get a bootloop until you either unlock again or restore a stock rom.
Locked bootloader = stock kernel only (Custom kernels will cause a bootloop)
Unlocked bootloader = any modified kernel and stock kernel (No DRM keys)
Here's one last question before following this guide http://forum.xda-developers.com/crossdevice-dev/sony/giefroot-rooting-tool-cve-2014-4322-t3011598
If something happens to my phone and I need to get it serviced, is it possible to remove root? Will there be any traces of root, or nobody'll ever know it'd been rooted?
David47 said:
Here's one last question before following this guide http://forum.xda-developers.com/crossdevice-dev/sony/giefroot-rooting-tool-cve-2014-4322-t3011598
If something happens to my phone and I need to get it serviced, is it possible to remove root? Will there be any traces of root, or nobody'll ever know it'd been rooted?
Click to expand...
Click to collapse
Flash a FTF or force repair with pccompanion.
That's removes root and no one can tell.
Hey guys,
I tried out the Android Concept MM when it first came out and i was a huge fan and insanely satisfied due to it's stock-like android experience, however the only thing keeping me away from using it is lack of root and xposed, however i was wondering can i just make a pre-rooted ftf with the ftf of the concept with recroot 4? like i would with a normal Marshmallow ftf or am i completely wrong?
I would appreciate the help thanks!
Concept ROM uses dm-verify, so it's unrootable on locked bootloader. However I've managed to root it on unlocked bootloader before somehow. I'll try to explain as best as I can:
1. Download and flash concept FTF http://forum.xda-developers.com/z3/...arshmallow-t3229030/post66825447#post66825447 (this is latest one I could find)
2. OTA update to the latest version if you want
3. Download Systemless SuperSU zip and place it on SD card https://download.chainfire.eu/921/SuperSU/UPDATE-SuperSU-v2.65-20151226141550.zip
4. Flash recovery via fastboot (it needs unlocked bootloader) (for recovery I used this one) : http://forum.xda-developers.com/z3/development/z3-twrp-2-8-7-0-d6603-t3273996
5. Don't leave fastboot mode! Navigate with volume keys to "recovery mode" and click power button to enter it.
6. Flash SuperSu you downloaded earlier and then reboot.
7. Done, enjoy your rooted Concept.
Nojus33 said:
Concept ROM uses dm-verify, so it's unrootable on locked bootloader. However I've managed to root it on unlocked bootloader before somehow. I'll try to explain as best as I can:
1. Download and flash concept FTF http://forum.xda-developers.com/z3/...arshmallow-t3229030/post66825447#post66825447 (this is latest one I could find)
2. OTA update to the latest version if you want
3. Download Systemless SuperSU zip and place it on SD card https://download.chainfire.eu/921/SuperSU/UPDATE-SuperSU-v2.65-20151226141550.zip
4. Flash recovery via fastboot (it needs unlocked bootloader) (for recovery I used this one) : http://forum.xda-developers.com/z3/development/z3-twrp-2-8-7-0-d6603-t3273996
5. Don't leave fastboot mode! Navigate with volume keys to "recovery mode" and click power button to enter it.
6. Flash SuperSu you downloaded earlier and then reboot.
7. Done, enjoy your rooted Concept.
Click to expand...
Click to collapse
Thanks but damn that sucks, i don't really wanna' lose DRM keys plus i still have 1 year of warranty left.
Also, (http://forum.xda-developers.com/z3/development/rom-zyxxos-5-1-1-v1-0-pure-stable-fast-t3229169) ZyxxOS requires a unlocked bootloader, however is there anyway i can replace the boot.img with one that's utilized on a locked bootloader ROM or will that not work
Salaminator said:
Thanks but damn that sucks, i don't really wanna' lose DRM keys plus i still have 1 year of warranty left.
Also, (http://forum.xda-developers.com/z3/development/rom-zyxxos-5-1-1-v1-0-pure-stable-fast-t3229169) ZyxxOS requires a unlocked bootloader, however is there anyway i can replace the boot.img with one that's utilized on a locked bootloader ROM or will that not work
Click to expand...
Click to collapse
Well, ZyxxOS has Sony's Concept based kernel. The developer itself at first thought it will work on locked bootloader, but it didn't. You could try to flash original Concept .2099 kernel, but I don't think it will work.
As for DRM, you can easily backup them before unlocking, but it's up to you.
Nojus33 said:
Well, ZyxxOS has Sony's Concept based kernel. The developer itself at first thought it will work on locked bootloader, but it didn't. You could try to flash original Concept .2099 kernel, but I don't think it will work.
As for DRM, you can easily backup them before unlocking, but it's up to you.
Click to expand...
Click to collapse
I'm confused with the effect DRM has but is there anyway to avoid them? Like if i backup do i just restore them after unlocking my bootloader?
Ideally, i wanted to run a AOSP like ROM and i hoped to remove all Sony stuff etc from Concept, However i'm just reluctant to unlocking my bootloader
This is probably the stupidest idea ever, I have close to no knowledge however what happens if i put Stock Sony 6.0.1 Kernel which has already obtained recovery without unlocking bootloader and flash SuperSU via that?
Alternatively, is there anyway to convert Our current Stock 6.0.1 into True Stock Android
Salaminator said:
I'm confused with the effect DRM has but is there anyway to avoid them? Like if i backup do i just restore them after unlocking my bootloader?
Ideally, i wanted to run a AOSP like ROM and i hoped to remove all Sony stuff etc from Concept, However i'm just reluctant to unlocking my bootloader
This is probably the stupidest idea ever, I have close to no knowledge however what happens if i put Stock Sony 6.0.1 Kernel which has already obtained recovery without unlocking bootloader and flash SuperSU via that?
Alternatively, is there anyway to convert Our current Stock 6.0.1 into True Stock Android
Click to expand...
Click to collapse
Maybe, but this is beyond my knowlege. Sorry.
EDIT: Or just use concept haha
Nojus33 said:
Maybe, but this is beyond my knowlege. Sorry.
EDIT: Or just use concept haha
Click to expand...
Click to collapse
Looking into Android 6.0 Complications from this article (http://www.xda-developers.com/a-look-at-marshmallow-root-verity-complications/)
It states the following:
If you want root today, on Android Marshmallow (6.0), you’re going to need to use a modified boot image. While it remains to be seen if this remains true indefinitely, it looks likely to be the case for some time – SELinux changes make it much harder to get root access without modifying the boot image. And as modifying the boot image requires an unlocked bootloader
Click to expand...
Click to collapse
So i'm assuming Z3 Has SELinux thus preventing us from editting the boot image for Marshmallow Concept hence leaving us with the only option to unlock out bootloader?
Lastly: Is there a potential to convert Stock Sony ROM into an AOSP looking/feeling rom?