Bootloader relock possible? - Xperia Tablet Z Q&A, Help & Troubleshooting

Was just reading this thread in the sony phone forum about relocking bootloaders and backing up the TA/DRM keys.
http://forum.xda-developers.com/showthread.php?t=2162907
Any comments.
I would love to try some custom roms but would hate to lose the ability to send the tablet in for repairs without sony making a fuss.

I'm not an expert, but if it's anything like the HTC bootloader unlock process, Sony will keep a database of imei/serial numbers, which you will have to provide in order to get the unlock code from the Sony website. So even if you did/could relock it, they would still be able to find your device in the list of devices that have been unlocked.
My XTZ LTE is en route.
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NEUR0M4NCER said:
I'm not an expert, but if it's anything like the HTC bootloader unlock process, Sony will keep a database of imei/serial numbers, which you will have to provide in order to get the unlock code from the Sony website. So even if you did/could relock it, they would still be able to find your device in the list of devices that have been unlocked.
My XTZ LTE is en route.
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Yes, that was mentioned in the original post.
But there is no way to prove that you actually did use the code to unlock it.

Related

Verizon Bootloader

I am about to upgrade my phone, and Im eyeing the Play, however, will the bootloader be unlockable(or bypassable) on the Verizon variant? Since I got a DROID2, that's a must have feature. Any help would be thanked greatly.
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xzillerationer said:
I am about to upgrade my phone, and Im eyeing the Play, however, will the bootloader be unlockable(or bypassable) on the Verizon variant? Since I got a DROID2, that's a must have feature. Any help would be thanked greatly.
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Unlock is not possible yet on CDMA Xperia phones. It's currently being investigated, and hopefully solution will come soon
Well, is root and flashing roms similarly to the Droid2/X/X2 possible?
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Nothing of the sort is possible but everything is being worked on.. We are all waiting.
Yes. Its possible. The difference will just be whether we find people willing to do the work. If all dev work stopped now, the process would go like this: wait for new root exploit, root phone, use second init process to boot cm7.... Just like the d2 and dx
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http://androidflip.com/root-sony-xperia-play/
fastboot drivers work on R800x, but unlocking bootloader on verizon is not possible yet.. Even SE cant help, i call shannanagins on you VW!!
<tk421> said:
http://androidflip.com/root-sony-xperia-play/
fastboot drivers work on R800x, but unlocking bootloader on verizon is not possible yet.. Even SE cant help, i call shannanagins on you VW!!
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People are trying to work on getting the bootloader unlocked, despite SonyEricsson not willing to give any help to the CDMA variant folks (R800x). The document you pointed gives pretty much the universal variant of how to unlock and root for all of the R800 series _EXCEPT R800x_ (which is what Verizon carries). Since you can't unlock the bootloader, you can't currently flash a new/different ROM.
So for now, people are working on it, albeit slowly. Don't expect a unlock/root method in the next day, but it will happen eventually. I know I'm eagerly awaiting it.
I'll work on that too when I get the phone.
I believe Verizon's phones aren't unlockable because Verizon wants total SW control over device.
I'm patiently waiting as well.

Can't Flash Roms. Xperia S Three UK

Right here is the issue. I've changed this thread twice now to keep the clutter away. Seeing I can't unlock my bootloader due to it being a 3 mobile bootloader (If I can please help me out as im struggling to find info) I can't flash CM9? Or even 10 for that matter? This is really frustrating me, I don't have a clue what to do, a lot of the information on bootloaders like mine is very bare and slim and not really helping me or anyone else in my position out very much. I can't root either which is as big a ***** as the bootloader situation....can someone point me in the right direction or just plain tell me nothing that I want is possible?
Further more, roms don't contain bootloaders do they? It's the phone itself? However, saying this, it is possible to flash bootloaders on the motorola defy....would the case not be the same here?
If your bootloader is unlockable then you can not flash custom roms, ie cm9 or cm10.
However you can flash stock roms via flashtool and you can root with a locked bootloader, there are a couple of threads which tell you how to root, here's one
http://forum.xda-developers.com/showthread.php?t=1742992
keewanchoapsss said:
Right here is the issue. I've changed this thread twice now to keep the clutter away. Seeing I can't unlock my bootloader due to it being a 3 mobile bootloader (If I can please help me out as im struggling to find info) I can't flash CM9? Or even 10 for that matter? This is really frustrating me, I don't have a clue what to do, a lot of the information on bootloaders like mine is very bare and slim and not really helping me or anyone else in my position out very much. I can't root either which is as big a ***** as the bootloader situation....can someone point me in the right direction or just plain tell me nothing that I want is possible?
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I am also with Three and have a locked BL, but using the guides found in these forums I managed to Root my device and even install MIUI yesterday, but MIUI is not great in my personal opinion so I reverted back to ICS.
There are not many ROMs out there for those of us with Locked BL's and until they find a way to get passed the BL or make more ROMs for us, we are limited to Stock ROMs and as far as I am aware not many of those exist besides MIUI.
Cheers lads! I'm just wondering now if we could take a leaf out of the Motorola Defy's development books. As I said, even with a locked bootloader they were using cm9 and even cm10 now! Unstable due to the old kernels, but still, managed it
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keewanchoapsss said:
Cheers lads! I'm just wondering now if we could take a leaf out of the Motorola Defy's development books. As I said, even with a locked bootloader they were using cm9 and even cm10 now! Unstable due to the old kernels, but still, managed it
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All we can do is hope my friend, seems Sony were slow in every regard to develop for this phone and that in turn has limited the progress of external developers, I mean just look at the amount of time it has taken Sony to get ICS out to us and that has impacted others in development.
We are now seeing the FreeXperia Project rolling out builds, though they remain solely for Unlocked BL's, MIUI is a step in the right direction for us, so I see no reason why others for Locked BL's will not appear in due course. Patience is the game when it comes to the Xperia S.
By the way, I have read from a few people that getting the SIM Lock removed does in some instances lead to BL Unlocking ability, I contacted Three and they told me the charge for unlocking the SIM from them via a code is £15 and I believe it gets applied to your bill as a one off fee if you want to try it and see in the service menu if your BL after a reboot shows the ability to be unlocked.
sim unlock and bootloader
Mobfigurz said:
All we can do is hope my friend, seems Sony were slow in every regard to develop for this phone and that in turn has limited the progress of external developers, I mean just look at the amount of time it has taken Sony to get ICS out to us and that has impacted others in development.
We are now seeing the FreeXperia Project rolling out builds, though they remain solely for Unlocked BL's, MIUI is a step in the right direction for us, so I see no reason why others for Locked BL's will not appear in due course. Patience is the game when it comes to the Xperia S.
By the way, I have read from a few people that getting the SIM Lock removed does in some instances lead to BL Unlocking ability, I contacted Three and they told me the charge for unlocking the SIM from them via a code is £15 and I believe it gets applied to your bill as a one off fee if you want to try it and see in the service menu if your BL after a reboot shows the ability to be unlocked.
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I'm with 3 as well and the first thing I did was to have my xperia s sim unlocked.
This did not unlock the bootloader as I was hoping
Having said that I was able to root the thing using the tutorials in these forums, so I'm pretty happy
Have to say the stock ROM looks quite good and I'd try some other ROMs just for the sake of it
I would try and sim unlock the phone if my bill wasnt horrendous already, they charged me for twitter sending texts to me haha! So sad. But back to the topic, I was just floating around the Motorola Defy forum again and they somehow extracted the bootloader seperately to try and unlock it! I really hope someone looks in to this would be so helpful if someone could extract their own, unlocked BL and we could flash it! ;o
I maybe barking up the wrong tree here but when i had my X10 and was in associated forum. The bootloader was locked and root was difficult.
Some of the devs were in contact with Sony to try and come to some compromise on the security. ( hence un-branded phones now having unlocked boot loaders)
The trouble is...
On branded handsets the bootloaders contain certain information that your network providers don't want you to have access to.
The devs are aware of this and respectively leave the bootloader compromising alone.
This is not saying it can't be done, just saying that out of respect for sony allowing some phones to have unlocked bootloaders those that are locked are being treated to the respect sony asked for.
Of course not all devs worldwide are so respectful so it will be compromised and indeed has been but currently only for sim unlocking.
Of course this post may just be a crock-o-crap and people may already working on workarounds.???
I would guess that for bootloader unlocking your best bet would be a phone unlocking solution like setool or ezsemc but these are not going to be free options and currently not available on the XPS
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Why i did'nt see anyone flashing the relock bootloader on a locked one. My common sense tells me that it might go from allowed=no to allowed=yes.
And you dont need fastboot access to flash it only flashmode and is tft file, just wondering..
demetris_I said:
Why i did'nt see anyone flashing the relock bootloader on a locked one. My common sense tells me that it might go from allowed=no to allowed=yes.
And you dont need fastboot access to flash it only flashmode and is tft file, just wondering..
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It just won't let you flash.
K900 said:
It just won't let you flash.
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Even if you have root?
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demetris_I said:
Even if you have root?
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Yes.
Contact jinx13 he can unlock bootloader for you I am sure, I am on three UK with unlocked boot , phone was unlocked and I am sure jinx13 can do it with setool
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Is that a cost free service from him though?
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keewanchoapsss said:
Is that a cost free service from him though?
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Cost he does it remotely
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chiefy009 said:
Cost he does it remotely
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Okay mate. Thanks a bunch. I'll get in contact with him and see what he has to offer.

unlocked bootloader for DRoid DNA

do you know if the bootloader is unlockable from HTCdev? or did verizon lock it down again?
As long as it isn't encrypted (that's what Moto does) then fastboot should be able to unlock it. The LTE Galaxy Nexus's bootloader was locked and fastboot fixed it in no time.
It'll for sure be encrypted (not technically encrypted, just signed with a asymmetrical key) so that the PBL/SBL can verify it. Both HTC and Moto have been doing this for a while. This allows all the software to be authenticated as original and completely screws any chance of custom software. The thing with HTC phones, is that the radio reads a variable from the memory (s-on or s-off) that tells it whether to verify the software or not. S-off relies on being able to find an exploit that allows us to change this variable. Moto phones don't have such a variable, so there isn't, at this time, any way to get around this short of stealing an unlockable bootloader from Moto (as some users did). HTCDev allows us to unlock the bootloader, but still doesn't give us full access, and voids your warranty. Hopefully, someone will uncover another exploit (just as with revolutionary) that will allow full s-off. Unfortunately, htcdev actually hampers this effort because it reduces the need for s-off, which removes most of the incentive to try to find an exploit.
Unlock via the site works. At least right now.
D
.
dsb9938 said:
Unlock via the site works. At least right now.
D
.
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Weird, I don't see it listed. Is it under "All other supported devices"?
Wot-75 said:
Weird, I don't see it listed. Is it under "All other supported devices"?
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Most new phones don't get listed. You just select the "Other" option.
I have already unlocked mine. It works.
D
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I just tried and htcdev under others worked.
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Sorry posted the same pic twice.
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dsb9938 said:
Most new phones don't get listed. You just select the "Other" option.
I have already unlocked mine. It works.
D
.
Click to expand...
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Do we know why some people are getting s-off, and others are left with s-on? Any rhyme or reason to it, or is it just random?
SeanPlunk said:
Do we know why some people are getting s-off, and others are left with s-on? Any rhyme or reason to it, or is it just random?
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I believe we got s-off phones from HTC because they were tested devices with Verizon Wireless before we received them.
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Unlock and Root method works on J Butterfly??

I am living in Japan and really want to get the new J Butterfly. I really want to be able to unlock and root this phone to take advantage off custom roms and all the good things that come with rooting. Can anyone tell me if these unlock or rooting methods will work on the J Butterfly?
Probably not. Although they are very similar, they are not the same phone.
You could try htcdev for unlocking it, its probably not blocked like the dna is, but actually achieving root should be different. And custom roms won't be cross compatable.
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Damn, I can try to unlock the phone, but without root, being unlocked doesn't do much for me I guess. Hmmm. A little disappointing.
Thanks for the answer.

anyone wokring on unlocking the bootloader?

hello. sorry for the question but can somebody tell if anyone is working on unlocking the bootloader in devices with the status "unlock bootloader allowed:no"?
thanks
Impossible, if your boot loader comes locked there isn't anything you can do to unlock it. Best to sell it and buy one unlockable.
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i know today it is impossible, has it was in my first android phone the xperia x10. what im asking if anyone is working on that or at least installing custom rooted roms with the locked bootloader...
thanks
As far as I am aware, no one will be able to unlock the bootloader ever. No one has managed it since 2011 as they're locked down tighter than....well you know.
However, people have previously found an exploit for root. That allows you to install custom roms, xposed etc but does not allow custom kernels (not a huge problem in my eyes, I've always found kernels to be slightly beneficial but also buggy if you're not an expert)
There's people working on it, but as of yet had no luck. I'm in the same boat as you, so guess it's just a waiting game.
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