Relock bootloader? - Asus Transformer TF700

Hello, I hope this isn't a stupid question
I haven't unlocked my TF700 yet, but I would like to in the near future (I really want to run something other than Asus's ROM). I have looked into several forms discussing the possibility of backing up all the partitions prior to unlocking, and then restoring them and relocking the device, but these methods all mention NVFlash which I know doesn't work. The reason I would want to do this is to get full DRM back if I need it, I have several movies and TV shows I have purchased the HD versions of through Google play, and I have heard that after unlocking you can only view them in SD. I know Asus keeps track of who unlocks, and I would loose my warranty, but I am not worried about that (Bought my tablet on craigslist and its been about a year anyway, so no warranty).
So my question is, has anybody come up with a way to backup and then later restore the locked bootloader? If yes, can somebody point me in the right direction? If this isn't possible, is there still a way to watch Play videos in HD after unlocking?
Thanks!
Sent from my ASUS Transformer Pad TF700T using xda app-developers app

It's possible to back up the DRM key partition (mmcblk0p6) and restore it after unlocking, but AFAIK nobody has confirmed yet whether this has any effect.

_that said:
It's possible to back up the DRM key partition (mmcblk0p6) and restore it after unlocking, but AFAIK nobody has confirmed yet whether this has any effect.
Click to expand...
Click to collapse
Really? i guessing the DRM key is specific to each device? I did see this tool for my phone: http://forum.xda-developers.com/showthread.php?t=2263627 being a tegra 3 device i wondered if i devices had a similar vulnerability

michaelhaseth said:
Hello, I hope this isn't a stupid question
I haven't unlocked my TF700 yet, but I would like to in the near future (I really want to run something other than Asus's ROM). I have looked into several forms discussing the possibility of backing up all the partitions prior to unlocking, and then restoring them and relocking the device, but these methods all mention NVFlash which I know doesn't work. The reason I would want to do this is to get full DRM back if I need it, I have several movies and TV shows I have purchased the HD versions of through Google play, and I have heard that after unlocking you can only view them in SD. I know Asus keeps track of who unlocks, and I would loose my warranty, but I am not worried about that (Bought my tablet on craigslist and its been about a year anyway, so no warranty).
So my question is, has anybody come up with a way to backup and then later restore the locked bootloader? If yes, can somebody point me in the right direction? If this isn't possible, is there still a way to watch Play videos in HD after unlocking?
Thanks!
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Click to expand...
Click to collapse
I tried cm10.1.2 (stable) and to my suprise i didnt get drm engine errors when using hulu or netflix
Sent from my ASUS Transformer Pad TF700T using Tapatalk 4

JoinTheRealms said:
Really? i guessing the DRM key is specific to each device? I did see this tool for my phone: http://forum.xda-developers.com/showthread.php?t=2263627 being a tegra 3 device i wondered if i devices had a similar vulnerability
Click to expand...
Click to collapse
The bootloader "locking" on the TF700 is done with cryptographic signature checks, so I don't think that ODM/fuse method would work.
Search the forums for "mmcblk0p6 drm" if you want to know more about the DRM key partition.

Related

[q] how-to relock?

Hi all
i want to do this.
1.unlock
2.install CWM
3.apply root and kernels
4.install stock recovery
5.re-lock
6.done
[fastboot oem lock] is work??
or anyother way to re-lock??
ccs21 said:
Hi all
i want to do this.
1.unlock
2.install CWM
3.apply root and kernels
4.install stock recovery
5.re-lock
6.done
[fastboot oem lock] is work??
or anyother way to re-lock??
Click to expand...
Click to collapse
asus says there is no way to relock but we will see if the devs here cant figure something out
You CAN NOT Relock. The prime devs worked on it for months, and couldn't get anything working. If you decide to unlock you void your warranty and no longer get official ota's. You do get access to custom roms though.
thanks to Reply
TXKSSnapper said:
You CAN NOT Relock. The prime devs worked on it for months, and couldn't get anything working. If you decide to unlock you void your warranty and no longer get official ota's. You do get access to custom roms though.
Click to expand...
Click to collapse
Thanks to reply
then i cannot use OTA upgrade anymore?
ccs21 said:
Thanks to reply
then i cannot use OTA upgrade anymore?
Click to expand...
Click to collapse
Correct. The only reason I would recommend unlocking, is so that you can install a custom rom. If you do not want to install a custom rom you shouldn't unlock.
Can you still install stock firmware with adb/vipermod using blob files?
xAshxMoneyx said:
Can you still install stock firmware with adb/vipermod using blob files?
Click to expand...
Click to collapse
Everything works on the tablet still. Asus just has your SN blacklisted
Sent from my SGH-T989 using XDA
you can update, however not by ota. you update by flashing roms that are updated.
There may not be a way (yet) of relocking the bootloader, but there should be a way of preventing ASUS from logging the serial. From the decompiled unlock tool, the tool is sending something to https://mdm.asus.com/DMServer/DeviceState. However, that may not matter. In a previous thread about this (for the Transformer Prime), one developer found that the result returned from the ASUS server is stored in a variable that's never used
new ion? said:
Everything works on the tablet still. Asus just has your SN blacklisted
Sent from my SGH-T989 using XDA
Click to expand...
Click to collapse
I doubt they blacklist it, they did after all provide the tool. Of course, they do say they won't officially support if you do unlock, but that doesn't necessarily mean they wouldn't if you asked them.
californiarailroader said:
I doubt they blacklist it, they did after all provide the tool. Of course, they do say they won't officially support if you do unlock, but that doesn't necessarily mean they wouldn't if you asked them.
Click to expand...
Click to collapse
AFAIK the unlock tool requires an internet connection, this is for the purpose of notifying ASUS on what tablets have been unlocled
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
Check up with the Prime forum - they have much more experience with this issue. AFAIK, unlocking means your on your own and ASUS means it.
Sent from my SCH-I510 using XDA
Is there a way to obtain root without an unlock? Sorry new to this game still reading
I have been enjoying the stock asus rom for now and just want root access but don't feel voiding the warranty less than 24 hours after buying it from best buy.
Really want to try the 6 axis controller for some emulating and who wouldnt love some overclocking (from what i have read this is possible on stock kernel)
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
dmcgrath009 said:
Is there a way to obtain root without an unlock?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=1645029
Thank you, after I posted I found that and i am currently rooted and back to the latest ota.
Sent from my ASUS Transformer Pad TF300T using Tapatalk 2
SOMEHOW, the "Device is UnLocked" has disappeared from boot screen
As I mentioned here just earlier today (or the full thread here), the "Device is UnLocked" has vanished from my boot screen. The screen that first shows up after you start your TF300.
I had gone through A LOT the past couple of days trying to UN-BRICK my device. Once I fixed my TF300, the "Device is UnLocked" is no longer in the upper left-hand corner anymore.
I have no clue what I did, or even if it's really "Locked" again. All I know is that it's gone. I think I might have accidentally tweaked something that might have just turned off the actual "Device is UnLocked" text. But I don't know...
-h3llsdr0id

The OTA/Bootloader issue

OK - so I am yet another one who just got the Infinity TF700 and cannot receive any OTA updates and receive the infamous 'network issue' error message when trying to use the unlocker apk. Question - are there any developers (or other talented people) who would be able to figure out what the unlocker does so that we can get a manual unlock like we have to do for the manual updates? Probably a stupid question - if it was possible, it probably would have already been done by someone. Just a thought.
Welcome to the team of locked devices screwed up by Asus. No solutions provided by Asus, too complex to develop a soft to unlock (encrypton). To summarize almost no chance to unlock your device.
I have the same problem. No OTA and no Unlock. I have make the Update to .26 manually but i can not manually unlock.
Yeah, after doing some further research, it's not just the Infinity. The same problem occurs with all Asus tablets - some can unlock, some can't, and there doesn't seem to be any solution. Sucks big time cause other than a tiny bit of light bleeding, this thing is fabulous after manually updating to the .26 version.
tmaurice said:
OK - so I am yet another one who just got the Infinity TF700 and cannot receive any OTA updates and receive the infamous 'network issue' error message when trying to use the unlocker apk. Question - are there any developers (or other talented people) who would be able to figure out what the unlocker does so that we can get a manual unlock like we have to do for the manual updates? Probably a stupid question - if it was possible, it probably would have already been done by someone. Just a thought.
Click to expand...
Click to collapse
Schrotty35 said:
I have the same problem. No OTA and no Unlock. I have make the Update to .26 manually but i can not manually unlock.
Click to expand...
Click to collapse
tmaurice said:
Yeah, after doing some further research, it's not just the Infinity. The same problem occurs with all Asus tablets - some can unlock, some can't, and there doesn't seem to be any solution. Sucks big time cause other than a tiny bit of light bleeding, this thing is fabulous after manually updating to the .26 version.
Click to expand...
Click to collapse
Same issue has been on the Prime as well, as tmaurice pointed out, and while a lot of people have tried, all have failed thus far due to the encryption level used. I think there is a straight 0% chance of any development to a third-party unlocker, sorry. And it sucks, I know. Returning it might be the only option.
So the best thing to do if i can't unlock the bootloader is to just return it and get a new one and hope that it can unlock? Without being able to unlock i cannot flash a new rom, kernel or anything, correct?
rbrmfld said:
So the best thing to do if i can't unlock the bootloader is to just return it and get a new one and hope that it can unlock? Without being able to unlock i cannot flash a new rom, kernel or anything, correct?
Click to expand...
Click to collapse
Yes, and yes. I'd keep returning until you get an unlockable unit -- if you really want to have OTA. And no, you can't do anything minorly advanced whn your unit is locked (no ROMs. no kernels, no recoveries).
I have now my second Infinity and the same problem. I can not unlock .
Gesendet von meinem ASUS Transformer Pad TF700T mit Tapatalk 2
Wait... since I could not get OTA, it means I wont EVER get OTA?
reluttr said:
Wait... since I could not get OTA, it means I wont EVER get OTA?
Click to expand...
Click to collapse
I see a lot of different people doing 2 or 3 RMAs and still having the same problem as a lot of us. Samsung has to be aware of the issue by now. Not sure if they're just ignoring it or don't know how to fix it. If you dig around their website you can find quite a few 404 errors and dead links as well. I think they have some serious problems with their servers.
Is there anyway to tell if I can unlock my bootloader without going throught the process? At which point does it show the error when you try to unlock? Anyone know?
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
flex3269 said:
Is there anyway to tell if I can unlock my bootloader without going throught the process? At which point does it show the error when you try to unlock? Anyone know?
Sent from my SAMSUNG-SGH-I717 using xda app-developers app
Click to expand...
Click to collapse
Not really, but a positive sign would be if you were able to receive OTA. Mostly if you have issues with OTA updates you could also have with bootloader unlock... but still no way to be sure without using tha unlock tool.
EDIT: I've just unlocked mine 5 minutes ago without any issue. My tabled come from the batch C6OKASxxxxx and didn't had the OTA update issue either.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Has anyone with a non-C6O S/N been able to unlock? I'm wondering if the unlock is only working on the C6Oxxxxxxx serial numbers for some reason (mine is a C6Oxxxxxx and I was able to unlock without issue).
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
jtrosky said:
Has anyone with a non-C6O S/N been able to unlock? I'm wondering if the unlock is only working on the C6Oxxxxxxx serial numbers for some reason (mine is a C6Oxxxxxx and I was able to unlock without issue).
My S/N is the C6O series and will not OTA or unlock. There are several others in the C6O series that are also unable to lock. At first we thought it might be the 'O' being read as a 'zero' by the Asus servers (maybe they had it wrong in their database), but a couple of people switched their serial numbers between the numeric and the letter for the third digit, but neither solved the issue. It's definitely something either with Asus' servers or their database of serial numbers. Someone in the Prime forum pulled apart what happens when you click the app, and the first thing it does is reach out for confirmation from Asus - and more than half of us with valid serial numbers are getting an immediate bounceback with the network error. Kinda frustrating. At the moment I'm OK with it since we can still root and manually apply the latest updates, but at some point more development is going to happen on these units and I'd love to flash away like I have with all my other devices.
Click to expand...
Click to collapse
jtrosky said:
Has anyone with a non-C6O S/N been able to unlock? I'm wondering if the unlock is only working on the C6Oxxxxxxx serial numbers for some reason (mine is a C6Oxxxxxx and I was able to unlock without issue).
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
I'm also in the C6O batch and I'm stuck on build .21 because I cant OTA or unlock
jtrosky said:
Has anyone with a non-C6O S/N been able to unlock? I'm wondering if the unlock is only working on the C6Oxxxxxxx serial numbers for some reason (mine is a C6Oxxxxxx and I was able to unlock without issue).
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
I'm in C70. :/
flyingreasemonkey said:
I'm also in the C6O batch and I'm stuck on build .21 because I cant OTA or unlock
Click to expand...
Click to collapse
You can always manual install that's what I did
Sent from my ASUS Transformer Pad TF700T using xda premium
cullenmq1 said:
You can always manual install that's what I did
Sent from my ASUS Transformer Pad TF700T using xda premium
Click to expand...
Click to collapse
That's not a solution though, it still wont let him unlock.
Before I exchanged mine, it was C60 and would not unlock.
Here we go again. Just when I think I finally got an ASUS tablet without issues. I went through 3 primes but OTA updates was not a problem. I had to manually update my Infinity to both .22 and .26 firmwares. It is an easy process so I wasn't that concerned. I haven't attempted to unlock yet. Is there anyone who didn't get the OTA updates but was able to unlock or do both situations always happen together?
reluttr said:
Wait... since I could not get OTA, it means I wont EVER get OTA?
Click to expand...
Click to collapse
I would've said no base don earlier experiences of oher users, but...
Pretoriano80 said:
Not really, but a positive sign would be if you were able to receive OTA. Mostly if you have issues with OTA updates you could also have with bootloader unlock... but still no way to be sure without using tha unlock tool.
EDIT: I've just unlocked mine 5 minutes ago without any issue. My tabled come from the batch C6OKASxxxxx and didn't had the OTA update issue either.
Sent from my ASUS Transformer Pad TF700T using xda app-developers app
Click to expand...
Click to collapse
...this would have proven me wrong. Thanks for the update, Pretorian80!
I'm on a C60xxx and OTA'd/unlocked without a hitch.

nVFlash with Jellybean

is such a thing possible at all with the tf700? i'm hesitant to root/unlock/flash roms until there is an unbrickable option out...
NVFlash works fine - it doesn't matter what version of Android your tablet is currently on. The only pre-requisite is that you have saved your TF700 "blobs" while you were on the .26 firmware or earlier. Once you have the saved the files, NVFlash will *always* work, regardless of the Android version.
If you've already upgraded to .30 or JB *before* saving your blobs with NVFlash, then you are stuck, there is currently no way to obtain the "blobs" needed to use NVFlash if you are past the .26 firmware before saving your blobs.
Hope that makes sense...
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
jtrosky said:
NVFlash works fine - it doesn't matter what version of Android your tablet is currently on. The only pre-requisite is that you have saved your TF700 "blobs" while you were on the .26 firmware or earlier. Once you have the saved the files, NVFlash will *always* work, regardless of the Android version.
If you've already upgraded to .30 or JB *before* saving your blobs with NVFlash, then you are stuck, there is currently no way to obtain the "blobs" needed to use NVFlash if you are past the .26 firmware before saving your blobs.
Hope that makes sense...
Sent from my ASUS Transformer Pad TF700T using Tapatalk 2
Click to expand...
Click to collapse
I am kind of a newbie so excuse my lack of knowledge. Is it possible to use the nvflash backups from another Tf700 to restore a possible bricked one?
Do you think we will get nvflash for jellybean in the future?
georgecarstoiu said:
I am kind of a newbie so excuse my lack of knowledge. Is it possible to use the nvflash backups from another Tf700 to restore a possible bricked one?
Click to expand...
Click to collapse
NO, the nvflash backup is for your device only.
I wonder whether the guys from Asus service use nvflash to rewrite everything in case the bootloader gets messed up as many users did with TWRP 2.2.2.0 or CWM 6.0.1.3?
I read somewhere in the forums that they actually have to replace the entire motherboard in this kind of a situation. Any truth to this?
Yep. All hard bricks with the TF201 got new main boards. No one can unlock either after they get their tablets back from RMA after this. There's a big thread about not being able to unlock on the prime forum.
Sent from my HTC Sensation using xda premium
paddycr said:
Yep. All hard bricks with the TF201 got new main boards. No one can unlock either after they get their tablets back from RMA after this. There's a big thread about not being able to unlock on the prime forum.
Sent from my HTC Sensation using xda premium
Click to expand...
Click to collapse
So let me get this right...if the motherboard is changed than you can no longer unlock the device and port other OSs? Are they putting in a superboard of some sort that cannot be unlocked?
I find this hard to believe especially when you can get the unlocking tool from the Asus website. At least let's hope it's not like this, otherwise my tablet would lose some of its appeal.
georgecarstoiu said:
So let me get this right...if the motherboard is changed than you can no longer unlock the device and port other OSs? Are they putting in a superboard of some sort that cannot be unlocked?
I find this hard to believe especially when you can get the unlocking tool from the Asus website. At least let's hope it's not like this, otherwise my tablet would lose some of its appeal.
Click to expand...
Click to collapse
Hard to believe?? Please, be my guest:
http://forum.xda-developers.com/showthread.php?t=1764917
Sent from my Transformer Pad Infinity TF700T using xda premium
georgecarstoiu said:
So let me get this right...if the motherboard is changed than you can no longer unlock the device and port other OSs? Are they putting in a superboard of some sort that cannot be unlocked?
Click to expand...
Click to collapse
No, but the problem is that after a motherboard exchange, the CPU ID doesn't match the serial number anymore. The unlock tool must contact ASUS to get the unlocking token (unique for each motherboard), and it fails if the CPU ID doesn't match in their database anymore. It simply can't get the right token anymore.
Ok....this makes a lot of sense actually. Let's see if the same thing applies to TF700. I'll keep you posted to whether I'll be able to unlock my tablet once it gets returned.

[Q] Relocking bootloader?(or other solutions)

Long story short, due to unexpected circumstances I think I shorted some pins in the tablet connector which messed up its USB host capabilities. I don't particularly want to lose my tablet to Asus for the duration of their assessment and fix(and/or receive a hefty bill for their services), but I'm a bit desperate to get it working with the dock again.
Is there a way to remove the custom recovery and relock the bootloader? I installed TWRP and rooted it(I know I can just unroot by factory resetting it). If anyone has any other solutions to offer I'd gladly consider them too.
From what I understand, even if you could find a way to lock the boot loader again, Asus has a list of serials for the tablets that have unlocked using their boot loader unlocker. That's one of the reasons people are having issues getting the unlocker to work right now. They aren't registering their tablets. Once they have registered their tablets with Asus, they are able to unlock the bootloader within a few days.
Sent from my LG-LG855 using Xparent Green Tapatalk 2
wetbiker7 said:
From what I understand, even if you could find a way to lock the boot loader again, Asus has a list of serials for the tablets that have unlocked using their boot loader unlocker. That's one of the reasons people are having issues getting the unlocker to work right now. They aren't registering their tablets. Once they have registered their tablets with Asus, they are able to unlock the bootloader within a few days.
Sent from my LG-LG855 using Xparent Green Tapatalk 2
Click to expand...
Click to collapse
Ah, so they've already registered my tablet as unlocked(or rather, registered me as a hacker ). I've read somewhere that rooting/unlocking voids your software warranty but they'll still fix hardware issues, is that true?
Pretty sure they'll cover hardware related issues. I've read where several members here have been successful getting defective or hardware failure covered.
Just let them know its a hardware related issue.
Sent from my LG-LG855 using Xparent Green Tapatalk 2
So I decided to do a factory reset to check if that would help and in case I have to return the device to Asus for technical support, and after I did that the connector seems to have worked just fine. Since I already made a full backup with TWRP I decided to see if it was a problem with any software I recently installed, I removed some recently installed apps(and ones I no longer use and lo and behold, it appears the problem disappeared after I removed AdAway.
Flash full stock ROM before you give it on warranty (means, no recovery, no root, nothing).
dragonnn said:
Flash full stock ROM before you give it on warranty (means, no recovery, no root, nothing).
Click to expand...
Click to collapse
DensetsuShun said:
So I decided to do a factory reset to check if that would help and in case I have to return the device to Asus for technical support, and after I did that the connector seems to have worked just fine. Since I already made a full backup with TWRP I decided to see if it was a problem with any software I recently installed, I removed some recently installed apps(and ones I no longer use and lo and behold, it appears the problem disappeared after I removed AdAway.
Click to expand...
Click to collapse
I already did and figured out it WAS a software issue I wasn't about to give it up for technical support without a fight haha

[Q] APX mode NVFlash with Jelly bean and 10.x bootloader

Dear all,
I didn't arrived to get proper answer on this topic.
On NVFlash page here http://androidroot.mobi/2012/09/23/nvflash-for-tegra3-transformer-tf700t/, it is said that
http://androidroot.mobi/2012/09/23/nvflash-for-tegra3-transformer-tf700t/
Click to expand...
Click to collapse
And here
Quote:
Originally Posted by calvinb1 View Post
Sbdags,
Did you ever get confirmation that nvflash files can still be restored on this new bootloader? I know you had some concerns a while back that Asus 'may' have tinkered with the bootloader to prevent restores but I do think think I ever saw a confirmation that it still works. I have my nvflash files backed up and want to make sure I don't loose the ability to recover from a soft brick in the event something goes drastically wrong.
Cheers!
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD
Yes nvflash works fine.
Click to expand...
Click to collapse
I'm personnaly in a 10.6.1.14.4 bootloader. But I would be interested getting all files to prevent a day a soft or hard brick.
Then is there a way for me to get those files?
If this topic has ever been discussed (even if I ever looked for it on the forum), do you have any reference I could look into?
Thank you a lot for your help
florck said:
Dear all,
I didn't arrived to get proper answer on this topic.
On NVFlash page here http://androidroot.mobi/2012/09/23/nvflash-for-tegra3-transformer-tf700t/, it is said that
And here
I'm personnaly in a 10.6.1.14.4 bootloader. But I would be interested getting all files to prevent a day a soft or hard brick.
Then is there a way for me to get those files?
If this topic has ever been discussed (even if I ever looked for it on the forum), do you have any reference I could look into?
Thank you a lot for your help
Click to expand...
Click to collapse
No way for you to gain NvFlash access, sorry.Only devices with 9.4.5.26 or lower firmware are eligible for NvFlash (you can't downgrade to 9.4.5.26, only to 9.4.5.30).
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD
Pretoriano80 said:
No way for you to gain NvFlash access, sorry.Only devices with 9.4.5.26 or lower firmware are eligible for NvFlash (you can't downgrade to 9.4.5.26, only to 9.4.5.30).
Sent from my ASUS Transformer Pad TF700T using Tapatalk HD
Click to expand...
Click to collapse
Thank you Pretorian. Is this due to new asus protections and we have very few hope, or dev just need some more time to adapt this ?
florck said:
Thank you Pretorian. Is this due to new asus protections and we have very few hope, or dev just need some more time to adapt this ?
Click to expand...
Click to collapse
Its the former. In the 9.4.5.30 and above bootloaders, Asus locked it. Meaning when you "unlock" you are really only unlocking recovery and fastboot but the bootloader remains locked and signed with a cryptographic key. It prevents any previous Asus bootloader and any non-OEM bootloader from ever being loaded again. So far, there has been no success at circumventing (hacking) the locked bootloader and its not looking promising. There is a petition out for NVFlash asking Asus to allow wheelie to prevent bricking but I doubt if that goes anywhere.
The next best thing is @_that as you've already experienced. He is a human recovery. They have a 95+% fix rate for Transformer soft bricks here at XDA.

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