Disadvantages to unlocking bootloader? - Huawei MediaPad M5 Questions & Answers

Getting increasingly frustrated with the modifications made to android to make it look like crapple devices, would much prefer a stock Android experience.
Will I lose DRM keys, break efuses, or do any other irreversible changes if I unlock and load lineageOS?
Will I be able to return to totally factory, locked and stock condition that gets OTA updates if I need to?
Want to understand this before I proceed.

Warranty would go out the window. So could DRM keys if you're flashing a custom ROM. OTAs should be fine if you return to stock, shouldn't even have to lock the bootloader (but they might add a check for that later, who knows).

Obviously aware of warranty, is that the only confirmed non reversible change? Isn't there any data like DRM keys or efuses that are irreversible destroyed when unlocking bootloader?

You will lose Widevine L3 support, so no HD Netflix. This is reversible but you would need to return to stock to get the widevine support back.

CrazyPeter said:
Obviously aware of warranty, is that the only confirmed non reversible change? Isn't there any data like DRM keys or efuses that are irreversible destroyed when unlocking bootloader?
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Shouldn't be an issue when unlocking the bootloader (sounds like you're thinking of Samsung). Flashing custom ROMs though...

Obveron said:
You will lose Widevine L3 support, so no HD Netflix. This is reversible but you would need to return to stock to get the widevine support back.
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Not necessarily. I've unlocked my bootloader, and flashed one of the OpenKirin ROMs and it's L1 right now. They just updated their ROMs a couple of days ago with better DRM support. I think it's the ROM that controls Widevine, not the unlocking the bootloader part.

Related

what kind of Unlocking Bootloader did you use??!??

as the title, did you use the OFFICIAL METHOD, or theTEST POINT ONE??!??
maybe... why?!? and what do you think about the quest of warranty back?
PeppeBove said:
as the title, did you use the OFFICIAL METHOD, or theTEST POINT ONE??!??
maybe... why?!? and what do you think about the quest of warranty back?
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well test point method is better because by following this method you will never lose drm keys and in official method you will lose these keys and you will never get it back. and your warrenty will be avoided in official method even if you relock the bootloader.
Official method.
Phone went to warranty, relocked bootloader, flashed stock firmware, had no problems. Touchscreen was replaced due to installing wrong ROM.

Unlock Bootloader?

Hi I just bought an S and I'm thinking whether or not I should unlock the bootloader. It's not carrier branded so it's unlockable. I know I lose DRM keys and data. I have an Xperia Play and I unlocked the bootloader on that but I did it using a testpoint method so I kept DRM Keys. I know how to flash roms, kernels etc as well. My question it what exactly does losing DRM keys do I know some apps stop working but is it really that bad? - Thanks
I haven't seen anything. TrackID works after updates.
Thanks, I'm still considering whether I should do it or not? Shall I just go for it?

What I have to do before sony service?

Hi.
I have some problems with my mini jack. When I plug headphones it sometimes work sometimes not. I think it is messed up. Phone still has waranity, so maybe they fix it.
My question is:
What I have to do before I leave my phone in service center?
Do I have to relock my bootloader or just flash stock ICS?
will they check software if phone has hardware problem?
Thanks in advance!
Cheers
Cwikla
You should relock the bootloader and restore drm keys of possible.
Relocking bootloader is a must as it is the first thing they check.
Relocking the bl should be enough but sometimes sony checks more deeper for the drm keys. So if you have backed up then restore your TA.
And you should flash the latest stock firmware.
They must probably will check bootloader status.
When my touchscreen wasnt working correctly, i just flashed ICS and relocked bootloader without restoring drm keys (i didnt backed it up when i unlocked). Apearrently they didn't checked the software and just sent me a new phone.
If you just relock the bootloader they can check the drm keys and will know you unlocked it before. But I don't see a reason why they will remove your warranty because of that, giving the fact that nothing software-wise can screw your headphone jack.
@Twski
Depends on the employee who checks your phone. If he checks for drm keys then he knows that you unblocked your bootloader and your warranty is void.
But mostly they just check the bootloader status like they did last time.
And unlocking the bootloader will void the warranty no matter what the problem is. While unlocking the bootloader they clearly told you that.
Hamza Murad said:
You should relock the bootloader and restore drm keys of possible.
Relocking bootloader is a must as it is the first thing they check.
Relocking the bl should be enough but sometimes sony checks more deeper for the drm keys. So if you have backed up then restore your TA.
And you should flash the latest stock firmware.
They must probably will check bootloader status.
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Twski said:
When my touchscreen wasnt working correctly, i just flashed ICS and relocked bootloader without restoring drm keys (i didnt backed it up when i unlocked). Apearrently they didn't checked the software and just sent me a new phone.
If you just relock the bootloader they can check the drm keys and will know you unlocked it before. But I don't see a reason why they will remove your warranty because of that, giving the fact that nothing software-wise can screw your headphone jack.
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Hamza Murad said:
@Twski
Depends on the employee who checks your phone. If he checks for drm keys then he knows that you unblocked your bootloader and your warranty is void.
But mostly they just check the bootloader status like they did last time.
And unlocking the bootloader will void the warranty no matter what the problem is. While unlocking the bootloader they clearly told you that.
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Thank you guys for reply!
I will relock bootloader, flash latest stock and go to sony service.
Edit: And if I want to unlock it again after it return to me, the procedure is the same like 1st time unlocking?
Yes.

Root questions

Hello,
I am new to this forum and rooting procces, I've read some threads and didn't understand few things.
So, my questions are:
1. Is it possible to root phone without unlocking bootloader and losing DRM keys?
2. If it isn't,is there a way to backup DRM keys and restore them after rooting?
3. If I am able to root without unlocking bootloader will I still get OTA updates and if I do, will OTA update delete my root status?
Sorry if these questions were already asked in other thread, I was searching a bit and couldn't find any of those. Hope you can help me out.
Thank you in advance and have a nice day
1. Yes it is although you do need some time to do it. It's not difficult though.
2. As soon as you root, you can take a ta backup(which requires a few clicks and about 2 minutes of your time).
3. You won't be able to use Ota (even if you are which you most likely won't, it is recommended that you DO NOT use it).
cindra said:
1. Is it possible to root phone without unlocking bootloader and losing DRM keys?
2. If it isn't,is there a way to backup DRM keys and restore them after rooting?
3. If I am able to root without unlocking bootloader will I still get OTA updates and if I do, will OTA update delete my root status?
Sorry if these questions were already asked in other thread, I was searching a bit and couldn't find any of those. Hope you can help me out.
Thank you in advance and have a nice day
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1.-Yes, the method is called "Downgrading". I go back to 4.4.2 (Build number 314) and use the older XZDR (Xperia Z Dual Recovery). It will temporarily root to install the recovery. When the phone reboots you can install a custom ROM or whatever to get Lollipop with Root and Recovery
2.-After rooting on 4.4.2 you can do a backup of the DRM Keys
3.-Just because you have rooted your phone you will no longer be able to get OTA updates for the Android system itself. OTA will show a random error message and PC Companion will refuse because of the modified software.
Ok, thank you for answers
Is there any 6+ Android build that is pre-rooted or is it better to stick with 5.1.1 rooted?
Alo, I've heard that cam quality could drop after rooting or unlocking bootloader, is it true?
cindra said:
Ok, thank you for answers
Is there any 6+ Android build that is pre-rooted or is it better to stick with 5.1.1 rooted?
Alo, I've heard that cam quality could drop after rooting or unlocking bootloader, is it true?
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Stick with android 5.1.1 for now.
And yes, cam quality WILL DROP, but only after UNLOCKING YOUR BOOTLOADER. Rooting alone won't hurt your cam quality.
Mokiwipeout said:
Stick with android 5.1.1 for now.
And yes, cam quality WILL DROP, but only after UNLOCKING YOUR BOOTLOADER. Rooting alone won't hurt your cam quality.
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Ok, so I was thinking a lot if I should root or not. I decided to root. So just to clarify some things. If I use comunity root with downgrading,will it keep my DRM keys? If yes, I backup TA partition when rooted and then I can proceed with BL unlocking. Can I restore DRM keys to a custom ROM? Do you have any good custom ROM suggestion for me and is it better to use odexed or deodexed ROM?
I saw also saw this thread, hope it works so I won't be losing any camera quality.
That should be all.
Thank you in advance.
Have a nice day .
If you do NOT UNLOCK your bootloader, you wont lose your drm keys. (this is why after rooting using this method you can actually backup your drm keys, which you MUST DO no matter what).
When you restore your drm keys, you actually RELOCK your bootloader, so you must be on a stock based custom rom, and not using a custom kernel, otherwise you will simply brick your device.
Odexed or deodexed rom is purely personal preference, the difference being that deodexed ROMs allow for more customization (which is not necessary though). Regarding this, it doesn't really matter whether it is deodexed or not, so keep this in mind.
I cannot suggest a rom and I would advise against asking which rom is the best, because it is against the forum's rules.
Mokiwipeout said:
If you do NOT UNLOCK your bootloader, you wont lose your drm keys. (this is why after rooting using this method you can actually backup your drm keys, which you MUST DO no matter what).
When you restore your drm keys, you actually RELOCK your bootloader, so you must be on a stock based custom rom, and not using a custom kernel, otherwise you will simply brick your device.
Odexed or deodexed rom is purely personal preference, the difference being that deodexed ROMs allow for more customization (which is not necessary though). Regarding this, it doesn't really matter whether it is deodexed or not, so keep this in mind.
I cannot suggest a rom and I would advise against asking which rom is the best, because it is against the forum's rules.
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Thank you for answer. If i use this method will it keep my bootloader locked (Will DRM keys stay on phone?).
Look.
Your bootloader cannot be "accidentally" unlocked. You have to get the bootloader unlock code by YOURSELF. A program wont do it on its own.
So don't worry, even if the method you chose to root the device requires an unlocked bootloader, it will be stated since you have to do it manually.
Plus, rooting a device with an unlocked bootloader simply requires installing a custom kernel(which has a recovery too) and then flashing a zip file that will root the phone.
Mokiwipeout said:
Look.
Your bootloader cannot be "accidentally" unlocked. You have to get the bootloader unlock code by YOURSELF. A program wont do it on its own.
So don't worry, even if the method you chose to root the device requires an unlocked bootloader, it will be stated since you have to do it manually.
Plus, rooting a device with an unlocked bootloader simply requires installing a custom kernel(which has a recovery too) and then flashing s zip fike that will root the phone.
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Thank you very much and sorry for so stupid questions, I am new to this and just want to be sure

Nougat, locked bootloader and DRM hack?

Hi.
Last year I unlocked bootloader and rooted my Z5C before it was possible to backup the TA and now I'm a bit lost in what to do. Yesterday I used Flashtool to install 32.3.A.0.378 but the problem is the DRM is gone. I have a locked bootloader so apps that check for this finally work. Therefore, if possible, I want to stay on locked bootloader a bit if it's possible to put in a DRM hack so camera pictures are nice again.
Is it possible to keep bootloader locked and install AndroPlus kernel? Or is there another way of getting DRM back without unlocking?
Device is not rooted and there's no recovery on it. But it's smooth like hell! :laugh:
Any suggestions?
No, not possible.
If you want a kernel with drm fix, you have to unlock bootloader
Gewiz said:
No, not possible.
If you want a kernel with drm fix, you have to unlock bootloader
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Thanks a bunch. Unlocking it is...

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