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As per the title say, is it possible to unlock the bootloader without obtaining the unlocking key from sony? is it a software or hardware difficulty? thanks
nasiayam said:
As per the title say, is it possible to unlock the bootloader without obtaining the unlocking key from sony? is it a software or hardware difficulty? thanks
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Why not get the key? It won't make any difference if you get the key or you unlock the BL without the key. Once you unlock the BL you will lose the DRM keys and BE2. Sony will be able to tell you unlocked the BL even if they don't have a record of you obtaining the unlock key.
Should've also posted this in the Q&A thread.
shadowboy23 said:
Why not get the key? It won't make any difference if you get the key or you unlock the BL without the key. Once you unlock the BL you will lose the DRM keys and BE2. Sony will be able to tell you unlocked the BL even if they don't have a record of you obtaining the unlock key.
Should've also posted this in the Q&A thread.
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i see, so no way of leaving no traces that we have unlocked the bootloader before? i thought that they won't be able to know it if we didn't obtain the key from them
my main concern is the warranty, especially i've extended my warranty for an extra 2 years
p.s. can the mod please move it to the Q&A thread please? thanks
nasiayam said:
i see, so no way of leaving no traces that we have unlocked the bootloader before? i thought that they won't be able to know it if we didn't obtain the key from them
my main concern is the warranty, especially i've extended my warranty for an extra 2 years
p.s. can the mod please move it to the Q&A thread please? thanks
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There's no way to hide it. Even if you manage to unlock the bootloader without the keys not having the DRM keys and BE2 is the proof that the BL was unlocked. Relocking it won't get the DRM keys back, they are gone for good.
nasiayam said:
i see, so no way of leaving no traces that we have unlocked the bootloader before? i thought that they won't be able to know it if we didn't obtain the key from them
my main concern is the warranty, especially i've extended my warranty for an extra 2 years
p.s. can the mod please move it to the Q&A thread please? thanks
Click to expand...
Click to collapse
Don't worry... They will not check for missing/present DRM keys, etc. So long as you flash to a stock ROM before sending it in, they will not even bother checking for unlocked bootloader.
Rashkae said:
Don't worry... They will not check for missing/present DRM keys, etc. So long as you flash to a stock ROM before sending it in, they will not even bother checking for unlocked bootloader.
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can someone please confirm the above statement for me?
the only reason i haven't unlocked my BL is the fear from voiding my warranty in case of something goes bad... (SOD etc.)
Some very recent and very interesting articles:
http://www.xda-developers.com/andro...nlocking-for-the-atrix-hd-razr-hd-and-razr-m/
http://blog.azimuthsecurity.com/2013/04/unlocking-motorola-bootloader.html
Edit: Yeah this is Motorola, but at least you get the idea what stuff is going on..
eviatar said:
can someone please confirm the above statement for me?
the only reason i haven't unlocked my BL is the fear from voiding my warranty in case of something goes bad... (SOD etc.)
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You should read this
http://unlockbootloader.sonymobile.com
They say, unlocking may void your warranty.
So their is a chance you can unlock without voiding it.
Just make sure you read there terms carefully before unlocking
Sent from my C6602 using xda app-developers app
Rashkae said:
Don't worry... They will not check for missing/present DRM keys, etc. So long as you flash to a stock ROM before sending it in, they will not even bother checking for unlocked bootloader.
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You cannot be 100% sure about that. They MAY still check for DRM keys.
abd_alazeez2002 said:
You should read this
http://unlockbootloader.sonymobile.com
They say, unlocking may void your warranty.
So their is a chance you can unlock without voiding it.
Just make sure you read there terms carefully before unlocking
Sent from my C6602 using xda app-developers app
Click to expand...
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Yes but there's always a chance of voiding it. A chance that if the OP wants to take.
thanks guys for the feedback, will take it into consideration of the risk involved before i unlock my bootloader
shadowboy23 said:
You cannot be 100% sure about that. They MAY still check for DRM keys.
Yes but there's always a chance of voiding it. A chance that if the OP wants to take.
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o.k, so it's not a 100% safe I see.
is there any method (maybe in the future) of unlocking BL without loosing those keys?
afaik, since those keys are software-based and not hard-coded such as IMEI, perhaps there is a way to back them up to PC/SDCARD and 'regenerate' them once the unlocking process has finished?
I don't care of doing some research myself and share my conclusions here, can someone please provide a method of listing those DRM keys as a start point? I mean, SONY must has a way of regenerate those keys on unlocked BL devices if they want to, right?
eviatar said:
o.k, so it's not a 100% safe I see.
is there any method (maybe in the future) of unlocking BL without loosing those keys?
afaik, since those keys are software-based and not hard-coded such as IMEI, perhaps there is a way to back them up to PC/SDCARD and 'regenerate' them once the unlocking process has finished?
I don't care of doing some research myself and share my conclusions here, can someone please provide a method of listing those DRM keys as a start point? I mean, SONY must has a way of regenerate those keys on unlocked BL devices if they want to, right?
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At this stage no one has found a way to get the DRM keys back. Sony could get the keys back but they won't fix the device under warranty. My guess is that it's embedded in the BL somehow. And unlocking it somehow the keys are deleted. It could be specific keys as well (not 100% sure) for each device.
shadowboy23 said:
At this stage no one has found a way to get the DRM keys back. Sony could get the keys back but they won't fix the device under warranty. My guess is that it's embedded in the BL somehow. And unlocking it somehow the keys are deleted. It could be specific keys as well (not 100% sure) for each device.
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When you meant they wont fix the device under warantee.. That be after the DRM keys are redone and took as the repair is final. Or when sending it in for DRM recovery is also chargeable?
Go here http://forum.xda-developers.com/showthread.php?p=41763438 Backup TA partition and unlock bootloader. If you want DRM keys back, restore TA. This will also relock bootloader. It will appear as if bootloader was never unlocked.
Sent from my C6603 using xda app-developers app
So, I want to install Cyanogenmod on my XZ, using flashtool to unlock the bootloader and doomlord's expliots to root.
However, won't rooting first re-lock the bootloader? Or unlocking the bootloader remove root? Both things wipe the everything, so... Help lpease?
Whatever you do, be sure to backup your TA partition before you unlock your bootloader: http://forum.xda-developers.com/showthread.php?t=2292598. To do this, you first need to root your device without unlocking your bootloader.
Otherwise you will lose your DRM keys permanently and you will never be able to use certain functions (like Mobile BRAVIA Engine 2) anymore, not even if you relock your bootloader and restore to a stock ROM.
Please also note that by requesting a bootloader unlock key from Sony, the IMEI number of your phone gets blacklisted and your warranty is void.
Apollo89 said:
Please also note that by requesting a bootloader unlock key from Sony, the IMEI number of your phone gets blacklisted and your warranty is void.
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Hi Apollo89, are you sure about that?
CiscoX said:
Hi Apollo89, are you sure about that?
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Go to http://unlockbootloader.sonymobile.com/unlock/step1. At step 2, you need to agree with the following legal terms before you can continue:
I acknowledge that use of the boot loader may void the phone’s warranty.
I acknowledge that, if Sony does perform any warranty repairs, Sony may charge a service fee for additional costs associated with the modified software.
So if a phone with an unlocked bootloader (or relocked bootloader) needs to be repaired, your warranty may be void, it's completely up to Sony to decide about that and they have the legal right to charge you for the repair because you agreed to those terms. If that's fine with you, you can continue to unlock your bootloader and flash a custom ROM like CyanogenMod. I myself would only consider this after official firmware updates have been discontinued.
Apollo89 said:
Go to http://unlockbootloader.sonymobile.com/unlock/step1. At step 2, you need to agree with the following legal terms before you can continue:
I acknowledge that use of the boot loader may void the phone’s warranty.
I acknowledge that, if Sony does perform any warranty repairs, Sony may charge a service fee for additional costs associated with the modified software.
So if a phone with an unlocked bootloader (or relocked bootloader) needs to be repaired, your warranty may be void, it's completely up to Sony to decide about that and they have the legal right to charge you for the repair because you agreed to those terms. If that's fine with you, you can continue to unlock your bootloader and flash a custom ROM like CyanogenMod. I myself would only consider this after official firmware updates have been discontinued.
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Damn, so you say if i request an unlock key for my bootloader, but never use it. Do it still void my warranty. I mean, maybe some people change there mind after they request the unlock key and never use it to unlock the bootloader.
CiscoX said:
Damn, so you say if i request an unlock key for my bootloader, but never use it. Do it still void my warranty. I mean, maybe some people change there mind after they request the unlock key and never use it to unlock the bootloader.
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You should only request the key if you're going to unlock your phone. Sony has no way to check if you unlocked your phone and then restored a TA backup, so that's why they require you to register your IMEI number.
Apollo89 said:
You should only request the key if you're going to unlock your phone. Sony has no way to check if you unlocked your phone and then restored a TA backup, so that's why they require you to register your IMEI number.
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ahhh, Thanks you so much for the information Apollo89
CiscoX said:
ahhh, Thanks you so much for the information Apollo89
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Anyway, if Sony refuses warranty, you could go to court and argue that you only requested the key, but didn't use it. Then it's up to the judge to decide if requesting the key (and agreeing to those terms) is enough evidence or not. However, I think most people won't go to court and just pay for the repair or buy a new phone. What I meant to say is: just be careful and think twice before doing such modifications
I think Denmark have pretty strict rules to protect the consumer, so I really doubt that Sony would get away with applying these rules here - but this definitely makes me not want to unlock the bootloader before I have seen Sonys 4.4 firmware.
Thanks for the info!
That being said, I think Sonys stock ROM works really well.
I'm rootet, running SwiftKey, Handcent SMS, Aqua Mail, HD Widgets an Apex Launcher Pro. I get 3 - 4 hours of screen time on stock settings.
I have no reason to really want another ROM.
Had it been a Samsung or HTC device I would have needed to strip the device of all the bloat
ware and get rid the massive battery drain, caused by wake locks from the manufacturers ROM.
Sent from my C6603 using Tapatalk 4
I'm trying to figure out exactly what you lose when you unlock Z3(C).
So far I've discovered that:
- Sony has a webpage that allows you to unlock your device
- Unlocking your device will void your warranty
- Unlocking is the only known way to get root (at least right now)
- Unlocking your device will kill the "TA partition" that contains DRM keys
- Loss of the aforementioned DRM keys will cause some stuff to stop working
I found a huge thread on backing up TA partition for older xperia devices, but no good information RE: what exactly you lose if you wipe out the DRM keys by unlocking.
Do any of you know definitively: what the DRM keys are for and what you lose?
As an aside - it looks like backing up TA partition is only possible before you unlock bootloader and if you've rooted your phone (so probably not possible on Z3C until someone finds a working exploit to get root with a locked bootloader).
Thanks in advance for any insights.
I don't think there is a definitive place which says exactly what you lose by unlocking the boot loader but judging by what people having been saying after unlocking the Z3C and other Xperia phones on 4.4 it seems like the answer is nothing. Nothing is lost on the software side at all.
On the z1c I neglected to back up the TA partition. And apparently lost native mirror cast and some camera features when I rolled the device back to stock.
Back up your TA partition before unlocking BL... If not for the I'm tact features turn for your warranty!
http://forum.xda-developers.com/showthread.php?t=2292598
Those that have rushed into unlocking the BL without backing up the TA partition risk voiding warranty I'm afraid.
dillalade said:
On the z1c I neglected to back up the TA partition. And apparently lost native mirror cast and some camera features when I rolled the device back to stock.
Back up your TA partition before unlocking BL... If not for the I'm tact features turn for your warranty!
http://forum.xda-developers.com/showthread.php?t=2292598
Those that have rushed into unlocking the BL without backing up the TA partition risk voiding warranty I'm afraid.
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Problem is, you need root to use those backup tools... So we would need a temp root exploit to backup before unlocking. But from what I've read so far, it doesn't seem like you lose that much, if anything.
I am also curious about this as I need root access but would like to preserve the warranty. Somebody else has also started a thread with what breaks with unlocking: http://forum.xda-developers.com/showthread.php?t=2890936
TiMiN8R said:
Problem is, you need root to use those backup tools... So we would need a temp root exploit to backup before unlocking. But from what I've read so far, it doesn't seem like you lose that much, if anything.
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Most important consideration is your warranty such if your happy to lost it then unlock your BL.
dillalade said:
Most important consideration is your warranty such if your happy to lost it then unlock your BL.
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It's not that definitive that you will lose warranty. Sony says it may void your warranty. Known issues with the specific model or batch, or other hardware problems that could not be caused by flashing custom ROMs/kernels will most likely still be covered.
http://www.phonearena.com/news/Sony...oader-unlock-tool-voids-your-warranty_id32972
I myself have sent in my Xperia T twice since unlocking the bootloader and on both occassions it was covered by the warranty.
Mind you, I did relock the bootloader and flash a stock FTF before doing that.
Flashtool has a function to relock the bootloader
http://www.digitalinternals.com/mobile/keeping-warranty-intact-sony-xperia-unlocked-phones/264/
I don't know if this works on our phone already, maybe someone who has already unlocked would like to try?
Hello,
My Z3C has bootloader unlock allowed: no.
Is there any problem if I try to unlock it anyway?
Thanks!
BenjaGM said:
Hello,
My Z3C has bootloader unlock allowed: no.
Is there any problem if I try to unlock it anyway?
Thanks!
Click to expand...
Click to collapse
No there is no problem, you probably won't be able to unlock it and that will be it.
Of course just remember that unlocking your bootloader will permanently disable some DRM-protected features.
The way around that is just to use the root exploit and backup the TA partition (good guide here).
If it say unlock allowed no, there is no way to unlock it so no point trying. But no trying won't do any harm, it's just pointless.
Some people were reporting that after sending in their phone for some hardware issues the phone they got back (the same one) had changed to booloader unlock allow yes. So this could be your last resort if you are lucky and willing to wait a bit it might work. Just make up some hardware issue like random crashes, rebooting or something.
And save your TA partition if you do that so maybe someone in this forum can spot the changes of before vs afterwards which would point in the direction what actually changes.
I need help! I unlocked my bootloader and rooted my phone. But "Rooting stat Unknown"
Well now I know that I made a big mistake. I guess that sony made a hard brick in my phone. I am not sure if i will be able to unlock my bootloader again and I need information about it. I lost my DRM Keys and I can't take pictures, so It's driving me crazy.
Can I use a back up of DRM Keys from another locked Z3+?
Iyagui said:
Well now I know that I made a big mistake. I guess that sony made a hard brick in my phone. I am not sure if i will be able to unlock my bootloader again and I need information about it. I lost my DRM Keys and I can't take pictures, so It's driving me crazy.
Can I use a back up of DRM Keys from another locked Z3+?
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You can't use drm keys from another phone. Plus you need root to backup your keys. And you cannot root z3+ without unlocking the bootloader first. Ive unlocked my bootloader. I have zero issues. Everything works great. What exactly did you do?
pikeylfc said:
You can't use drm keys from another phone. Plus you need root to backup your keys. And you cannot root z3+ without unlocking the bootloader first. Ive unlocked my bootloader. I have zero issues. Everything works great. What exactly did you do?
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Not is my case. I rooted and later I touched "My xperia protection" and the phone didn't respond any more. Later I understood that it was a big mistake. I had to restore my phone with sony companion and now I don't have unlocked my phone and I can't root it , again. And also I lost all my DRM keys, so my camera is a disaster. I'm not sure about if I could restore the original state of the phone, locked but with the posiblity of unlocked again. My rooting status is Unknown.