Locked or Unlocked Bootloader? - Xperia Z4 Tablet Q&A, Help & Troubleshooting

Good evening all.
I have an SGP771 which I have owned for over a year now. I have been reading up about rooting and flashing this device. At the moment I am in a quandary as to whether I can unlock the bootloader or not. When I enter. *#*#7378423#*#* into the dialer and look at the Configuration menu from the service menu the Rooting status reads as Bootloader Unlock Allowed: No. When I enter the Developer Options there is a toggle for OEM Unlocking - Allow the bootloader to be unlocked, which I have switched to on. Developer options are also switched on.
Can anyone tell me if there is any way to root and flash this device?
Many thanks.

Hello @weazil60
Did you make it unlocking your bootloader ? I ve got the same issue with my z4 tablet.
Maybe I am going to apply this guide https://forum.xda-developers.com/z4-tablet/general/guide-safe-bootloader-unlock-restore-t3362391 to see if I can unlock my bootloader that way (they did nt say there are cases it should not work) ...
I am interested in installing LineageOS but not sure if LineageOS plays well with the physical bkb50 bluetooth keyboard ...

Good evening Pierro78.
Unfortunately I received no replies and decided just to stick with using Firefox Focus to avoid ads (this was my main issue).
If you are successful with your modification please let me know.
Best of luck - weazil60.

Related

Unlock Bootloader never works...experts please i need advice and support :(

Hello XDA Community
I have had my Sony Xperia Z ultra Since last year and i've never been able to Unlock the Bootloader...whenever i've tried it just doesn't work almost makes me not want the device as i cant stand the stock Sony Xperia UI.
First off the normal method ive tried just never works
UNLOCKING THE BOOTLOADER:
This may wipe your phone, so backup your stuff
• Go to Sony's dev site
• Request the unlock key and check your mail straight away. Email is quick these days.
• Open Flashtool on your computer (yes, the one you installed earlier)
• Click the "BLU" icon
• Follow the steps and enter your unlock key
Quick note...If i type *#*#7378423#*#* into the keypad and continue the steps i get to the Service info > Configuration > Rooting Status. If Bootloader unlock allowed and its always said Bootloader not allowed...now i don't know if that means anything or with a bit of hope ill still be able to Unlock my Phone...
My phone is a contract phone with o2 here in the uk and even trying to return the phone is impossible as they tell me all the time are you asking to unlock the device for use with a different network
I've done my best to explain to them no its the bootloader and they tell me i shouldn't be messing with the device etc etc etc etc.....
anyways theres no way of convincing them and am stuck with this exact phone...i dunno what else to do if even trying to unlock bootloader will ever work for me
" If Bootloader unlock allowed and its always said Bootloader not allowed."
Thats the problem.
You could look at installing a theme or maybe monx's ROM
blueether said:
" If Bootloader unlock allowed and its always said Bootloader not allowed."
Thats the problem.
You could look at installing a theme or maybe monx's ROM
Click to expand...
Click to collapse
This means that your bootloader is unlockable from the factory. There's no work around for this.
Sent from my C6833 using XDA Premium 4 mobile app

[ANE-LX1] OEM Unlocking

I bought ANE-LX1 (P20 Lite) on June 2018 and immediately unlocked the OEM from the developer options (automatic factory reset was done then), but i never rooted or installed custom rom, recovery...etc.
All updates was normally arriving and i was updating my phone regularly (current build is: ANE-LX1 8.0.0.170(C185)).
I decided to root my device using fastboot, but when the device is in recovery mode i can see:
Code:
Phone Locked -- (in green font color)
FRP Unlock -- (in red font color)
When i try to flash using fastboot i got:
Code:
FAILED (remote: Command not allowed)
While searching online i found that Huawei decided to lock bootloader for all users (so we buy their hardware which contains an opensource software and then they lock it... PERFECT!), and it seems that the only way now is to get the unlock code by contacting third-party codes providers, pay money and they guarantee to provide the correct unlock code (pay and pray) + I will have to expose my device information.
My questions are:
-How can i see in the developer options that my OEM is already unlocked, while the recovery is not convinced?
-Do i really have to unlock it again with the code "after purchasing it ofcourse -- which i will never do" (e.g. using fastboot)?
-Is there any solution from xda experts for my case rather than buying codes and exposing my device information or stay with a Locked bootloader?
(attached evidence images for a clearer view)
drive.google.com/open?id=1e9CepsHp2O541ZKGS0E6uqS2hBwp8ry1
drive.google.com/open?id=119eCoO4Z0TvydupLIsEv-r5lsGHOD4o0
drive.google.com/open?id=1IBA1nYnw_PU25VLPTzqSLswTpGMQxuXP
Thanks in advance for your kind support.
and Thanks Huawei for putting us as a development community in this situation, where we have to pay for the black markets to unlock our own phones in an unofficial way.
Yes please, shoot some answers!
alimerdan said:
I will have to expose my device information.
Click to expand...
Click to collapse
What do you expose?
bouncingsoul said:
Yes please, shoot some answers!
What do you expose?
Click to expand...
Click to collapse
IMEI, product S/N (if i correctly understood the process, i have to provide my device info so they can extract the bootloader unlock key)
According to the information that's available, the code used to unlock the bootloader is unlocked in a very complicated way and it's basically unique for everyone. Now, I don't know how much this is true and how and why these people got their hands on the "method" of creating the code, but no one has been able to find a way that's guaranteed to work or even work at all, except for, of course, these sites that make you pay for it. I hope I'm not mistaken and forgive me if I am, but I don't think there is any way to obtain the bootloader code manually or without exposing your information to random strangers on the internet.
Need to unlock bootloader with dc unlocker to get unique unlock code. Look guide bootloader unlocking

Huawei P20 Lite ANE-LX1 bootloader (yes, another one of those thread. Sorry !)

Hello everyone,
I am wondering if there are any ways to know if the Huawei P20 Lite has its bootloader unlocked or not without erasing all of its datas. I am looking for a way to root it without paying for its bootloader code, as I am unsure if these are scams or if my phone is already unlocked.
I bought it on amazon, it's not affiliated to any mobile company, so I thought maybe it's unlocked... Or are the mobile company lock different from the bootloader lock ? It's also from EU (France); ANE-LX1 (C109) model.
I am a complete neophyte into this, as the only other phone I ever root was a Samsung Galaxy Note 4, which was a very easy task.
I saw guides on how to root it without its bootloader code but I have no idea which to trust. I don't ask for you to search for me; I have tabs and tabs opened but I am also anxious by the idea of trying anything that could lock it and force me to pay for its bootloader.
Thanks for your answers ! Have a good day ! (6:25 am when I'm writing this here ^^)
EDIT : Well the more I read about rooting it the more I'm thinking it's not for newcomers.. Any tips/easy guides ? Because I feel like every guides I found are assuming that you already know things.. Which I don't :c
Ysull said:
Hello everyone,
I am wondering if there are any ways to know if the Huawei P20 Lite has its bootloader unlocked or not without erasing all of its datas. I am looking for a way to root it without paying for its bootloader code, as I am unsure if these are scams or if my phone is already unlocked.
I bought it on amazon, it's not affiliated to any mobile company, so I thought maybe it's unlocked... Or are the mobile company lock different from the bootloader lock ? It's also from EU (France); ANE-LX1 (C109) model.
I am a complete neophyte into this, as the only other phone I ever root was a Samsung Galaxy Note 4, which was a very easy task.
I saw guides on how to root it without its bootloader code but I have no idea which to trust. I don't ask for you to search for me; I have tabs and tabs opened but I am also anxious by the idea of trying anything that could lock it and force me to pay for its bootloader.
Thanks for your answers ! Have a good day ! (6:25 am when I'm writing this here ^^)
EDIT : Well the more I read about rooting it the more I'm thinking it's not for newcomers.. Any tips/easy guides ? Because I feel like every guides I found are assuming that you already know things.. Which I don't :c
Click to expand...
Click to collapse
Hello,
- "I am wondering if there are any ways to know if the Huawei P20 Lite has its bootloader unlocked or not" -
everytime the phone starts up, it goes to a screen saying: "Your device has been unlocked and can't be trusted..." (the most reliable method)
- "Or are the mobile company lock different from the bootloader lock ?" - yes, you can check SIM-lock status in "Project menu" - dial *#*#2846579#*#* from the phone dialer, select Network Information Query > SIM Lock Info
- "how to root it without its bootloader code but I have no idea which to trust." - best way to brick your phone
If you intend to unlock your bootloader , you have to downgrade to Oreo - EMUI 8.0 via HiSuite , then you must downgrade to lower build number with Google patch 04.2018-06.2018 . Now you can get bootloader unlock code for 4euros - DC-Unlocker.com or hcu-client.com.
Each bootloader code is permanent, it wont expire, you can use the same bootloader code to unlock if your bootloader will be lock again for some reason.
For further explanations try asking here.
Edit: you can use also paid service :
https://ministryofsolutions.com/huawei-bootloader-unlock-paid-service-html

Any methods to acquire root and/or unlock bootloader on the K92?

I am sure if you have found this forum, you are also looking for the ability to root the LG K92. Unfornatuely, it looks like as it stands currently there is no known way to root the K92.
There was one glimmer of hope on another thread https://forum.xda-developers.com/t/root-aquired.4253159/ but it looks like that may have been a dead end as well.
Am I understanding, unless there is a exploit to gain root access from the Android 10 OS, the only possible way would be to get the bootloader unlocked. I have a K929AM (LG K92 from AT&T) and, as I am sure you already know, LG does not have that on the supported list for bootloader unlocking. In fact, it looks like all of the K series phones do not have bootloader unlocking supported. When you try to boot to Bootloader, it boots into the OS and if you boot to fastboot, you get fastbootd where the OEM unlock does not even appear to work.
According to https://lgk20.com/lg-k92-5g-root-bootloader-unlock-twrp-custom-rom-lmk920am/ (scroll to the bottom) we would expect to see a "bootloader unlock page" but I am not even sure if the LG K92 has one of these and, even if it does, if it would be accessible.
Does anyone have any suggestions on any unsupported methods on how to unlock the bootloader on this phone? I would be happy to test anything at this point. If we can somehow figure this out, this method may work on other K-series devices which would be a big win. So far, the only menus I can access are FASTBOOTD and Download Mode.
To add to this, it looks like it is possible to access the Bootloader (bootloader unlock page) from the LG K20. https://lgk20.com/lg-k20-plus-unlock-bootloader-metropcs-mp260-t-mobile-tp260/2/
I am wondering if it is possible to somehow force the K92 into this menu even if short circuiting something on the board.
Anyone have any ideas?

Unlockable Bootloader - options?

After rooting my Z2 and backing up the TA partition, I've discovered that the bootloader is not unlockable (it's a Vodafone branded device).
Is there a nefarious way in which to bypass this? I understand that the whole point is to keep it locked, but it's an old enough device so I may have missed where it's possible.
Otherwise what are my options for an up-to-date custom rom? As indicated, I've already achieved root and have TWRP installed. I tried flashing Lineage via recovery but got an E: unknown command [log] error.
I'm in the same boat unfortunately. I bought a used phone that had Vodafone UK. It was marked as SIM-unlocked, and that seems to be true; the service info doesn't show any filled checkmarks nor counters in SIM lock information. However, bootloader seems to be locked forever - flashtool reports "Bootloader status : NOT_ROOTABLE" and phone's service menus also say that rooting status is "bootloader unlock allowed: no".
I wasn't even aware there are Sony phones that are not SIM-locked but are still boot-locked without any way to unlock.
I would really want to upgrade from Android 6 to at least 7 because there are some specific apps that work only from A7. Wondering if there is any custom ROM that would run on stock A6 kernel but with everything else from A7? It should be possible to install such a ROM even on a bootlocked device, right?
Since posting I've discovered some answers. The bad news is that, no, custom ROMs are limited without an unlocked bootloader.
The potentially good news is that you can pay for an aftermarket SIM unlock, which has the side effect of also allowing the bootloader to be unlocked.
I've not tried it myself, but do a search for "Sony cable unlock credits" for some leads.
Yea I also am stumbling upon this same news, in my city there are some shady areas so I will ask around and see if anyone is capable of doing it and will let you know.
So far my phone has bootloader locked, sim locked with 3 attempts left so I will work on unlocking those and then rooting the phone and digging deep after
Lets cross our fingers that somethings comes up
So far online , I find only old videos and outdated information, websites down and nothing else.
One thing is for sure, if your bootloader can be unlocked, you just go to sony official website and follow their instructions and its free and easy,
But if it says ""bootloader unlock allowed: no" then...lets see what can we do.
Hey I am willing to pay, why not if its going to unlock the bootloader 100%

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