Any way to lock my bootloader again (H815 eu)? - G4 Q&A, Help & Troubleshooting

I unlocked my bootloader to try CM13, but I'm not happy. Now I can't find any guides or pages that explain how I can revert my phone back to original state (bootloader locked)? Can't sell this phone when the device unlocked text is on the boot screen
Plese don't respond if you just tell me to google or search, because I did that...

Cloudstrife said:
I unlocked my bootloader to try CM13, but I'm not happy. Now I can't find any guides or pages that explain how I can revert my phone back to original state (bootloader locked)? Can't sell this phone when the device unlocked text is on the boot screen
Plese don't respond if you just tell me to google or search, because I did that...
Click to expand...
Click to collapse
There is no way to lock to the bootloader again. Once unlocked it's unlocked for good.
Sent from my G4 using XDA Labs

IIIIkoolaidIIII said:
There is no way to lock to the bootloader again. Once unlocked it's unlocked for good.
Sent from my G4 using XDA Labs
Click to expand...
Click to collapse
As above.... its been well documented both by LG on their page and on here... its a one way trip... In fact, at each stage of the Unlock process doesnt LG warn you its irreversible

NightOrchid said:
As above.... its been well documented both by LG on their page and on here... its a one way trip... In fact, at each stage of the Unlock process doesnt LG warn you its irreversible
Click to expand...
Click to collapse
Yep the point it out throughout the process.
Sent from my G4 using XDA Labs

You can easily sell if the bootloader is unlocked btw, I've sold loads of devices with an unlocked bootloader.

El Presidente81 said:
You can easily sell if the bootloader is unlocked btw, I've sold loads of devices with an unlocked bootloader.
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Click to collapse
Does and Unlocked Bootloader just affect DRM content and Can an Unlocked Bootloader take an OTA or work through LG bridge / LGUP?
I must admit.. I couldnt do it

NightOrchid said:
Does and Unlocked Bootloader just affect DRM content and Can an Unlocked Bootloader take an OTA or work through LG bridge / LGUP?
I must admit.. I couldnt do it
Click to expand...
Click to collapse
Yep, DRM content is fine, I've not encountered anything that doesn't work.
I returned to stock with LGUP and took OTAs on my previous device when I did the warranty return and didn't have any issues.

Cloudstrife said:
I unlocked my bootloader to try CM13, but I'm not happy. Now I can't find any guides or pages that explain how I can revert my phone back to original state (bootloader locked)? Can't sell this phone when the device unlocked text is on the boot screen
Plese don't respond if you just tell me to google or search, because I did that...
Click to expand...
Click to collapse
apparently it can... on h811.. not sure about your variant.
read here ... and if you follow procedure can you make video to show it really works.. ?
http://forum.xda-developers.com/tmobile-g4/help/relock-bootloader-h811-t3372970

Related

[Q] Bootloader status

Hey guys,
I have tried to search for this but I couldn't find it anywhere. Can anyone tell me if this means my bootloader is locked or unlocked?
I want it to be locked because I need to send it back to LG for some touchscreen defects, and yes I didn't even take a look of the locked bootloader before unlocking it.
Thanks for helping!
dontstalkme said:
Hey guys,
I have tried to search for this but I couldn't find it anywhere. Can anyone tell me if this means my bootloader is locked or unlocked?
I want it to be locked because I need to send it back to LG for some touchscreen defects, and yes I didn't even take a look of the locked bootloader before unlocking it.
Thanks for helping!
Click to expand...
Click to collapse
just flash a KDZ and you will have a locked boatloader.....
dontstalkme said:
Hey guys,
I have tried to search for this but I couldn't find it anywhere. Can anyone tell me if this means my bootloader is locked or unlocked?
I want it to be locked because I need to send it back to LG for some touchscreen defects, and yes I didn't even take a look of the locked bootloader before unlocking it.
Thanks for helping!
Click to expand...
Click to collapse
ya its locked....if you unlock ur bootloader with freegee yu wont gt the screen yu attached...!!
dontstalkme said:
I want it to be locked because I need to send it back to LG for some touchscreen defects
Click to expand...
Click to collapse
Can you explain please what's wrong with your touchscreen? I experienced some abnormal behaviour with mine too.
Sent from my LG-E975 using xda app-developers app
Best way to be sure you removed any trace of unauthorized modification is tu use kdz updater and a sdcard wipe,after you backed up all your stuff.
Sent from LG E975 pwd by CarbonRom

unlock bootloader on unlock allowed no

Hi I would like to know if theirs a way to unlock bootloader still with status no when going though service menu on this compact is this by rom choice default locked or firmware need a downgrade and then upgrade to custom. Or is theri more to it as dont want to brick my compact
No way, sorry.
Sent from my D5503 using xda premium
mentalghost said:
Hi I would like to know if theirs a way to unlock bootloader still with status no when going though service menu on this compact is this by rom choice default locked or firmware need a downgrade and then upgrade to custom. Or is theri more to it as dont want to brick my compact
Click to expand...
Click to collapse
You will never be able to unlock the bootloader on that phone, unless your carrier can give you some kind of code to change your unlock status (not sure this is even possible).
Rekoil said:
You will never be able to unlock the bootloader on that phone, unless your carrier can give you some kind of code to change your unlock status (not sure this is even possible).
Click to expand...
Click to collapse
I can get the unlock code not a problem to unlock phone to any network. am already waiting for that from o2 so can use on any network but will this work or is it a septate code that is used for bootloader or somthing
mentalghost said:
I can get the unlock code not a problem to unlock phone to any network. am already waiting for that from o2 so can use on any network but will this work or is it a septate code that is used for bootloader or somthing
Click to expand...
Click to collapse
The BL is different, if it came from O2 then chances are you cant unlock the BL.
So there is no chance? It worked with xperia arc and omnius. Costs about 15$, that would be ok. But will it work with our z1c in the near future? Or is it just "luck" to find an exploit?
reellamer said:
So there is no chance?
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Click to collapse
NO.
XperienceD said:
NO.
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Click to collapse
Well nothing is impossible, but it isn't likely as it requires a bootloader exploit. Realistically it isn't going to happen though, unless some smart people devote a lot of time to it. The most likely scenario (using test point to gain more software access) would require hardware tampering.
Hello Mentalghost,
Unfortunately there is no way to unlock the bootloader when the status is "No".
Have a great day, cheers!
Sent from my D5503 using Tapatalk
mentalghost said:
Hi I would like to know if theirs a way to unlock bootloader still with status no when going though service menu on this compact is this by rom choice default locked or firmware need a downgrade and then upgrade to custom. Or is theri more to it as dont want to brick my compact
Click to expand...
Click to collapse
MentalGhost, where did you purchase your phone? This phone isn't sold by any carriers in the USA, to the best of my knowledge, so the bootloader shouldn't be locked.
thatguy222 said:
MentalGhost, where did you purchase your phone? This phone isn't sold by any carriers in the USA, to the best of my knowledge, so the bootloader shouldn't be locked.
Click to expand...
Click to collapse
Bought in UK where I am not in USA. Might take back to shop where bought from and see if got any others in lol
Or wait for locked bootloader versions or someone makes modded version with unlocked rom that is been modded like one where you install modded that is unlocked install and then can unlock bootloader did in xperia s I use to have was a modded rom that was originally saying bootloader unlock no and added new Base rom and then said bootloadr unlock yes maybe this will happen on this phone in time or locked bootloader kernels and rom come along
mentalghost said:
Bought in UK where I am not in USA. Might take back to shop where bought from and see if got any others in lol
Click to expand...
Click to collapse
I'd recommend to anyone that is still able to return a Phone to do so because I think you'll find you'll be waiting a long time for a solution.
XperienceD said:
I'd recommend to anyone that is still able to return a Phone to do so because I think you'll find you'll be waiting a long time for a solution.
Click to expand...
Click to collapse
Plus, there will be no solution. The reason why Xperia Arc S and other 2011 Xperias worked with testpoint method was because of that there was a big security flaw in the security of the testpoints nand access, but those flaws have been fixed in newer Xperias and newer 2011 Xperias also.
devstaff said:
Plus, there will be no solution.
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Click to collapse
+1 It was coming to that realization that I sold my O2 locked Z after 6 months to buy an unbranded Z1 Compact. It worked out cheaper too spending hundreds of pounds up front for my Phone with the added bonus of having access to all of it.
What happens if you still follow the instructions on how to do it? I didn't check if it was allowed and I'm stuck in bootloop and I can't flash via flashtool,
tunnna said:
What happens if you still follow the instructions on how to do it? I didn't check if it was allowed and I'm stuck in bootloop and I can't flash via flashtool,
Click to expand...
Click to collapse
See here - http://forum.xda-developers.com/showthread.php?p=49928704, power off the Phone and reflash.
XperienceD said:
See here - http://forum.xda-developers.com/showthread.php?p=49928704, power off the Phone and reflash.
Click to expand...
Click to collapse
Yes I've tried it but flashtool gets stuck on processing loader. I waited over 10min with 0% progress on flashtool.
tunnna said:
I waited over 10min with 0% progress on flashtool.
Click to expand...
Click to collapse
Once or twice?
XperienceD said:
Once or twice?
Click to expand...
Click to collapse
thrice with different roms
---------- Post added at 11:17 PM ---------- Previous post was at 11:05 PM ----------
I can give you more info if you tell me what you need to know
XperienceD said:
Once or twice?
Click to expand...
Click to collapse
Ok solved... I had an old version of flashtool running... -.- :laugh:

[Q] How to unlock the bootloader?

I'm getting my T-MO G3 returned soon and would like to unlock the bootloader asap but I'm not exactly sure how. Is it just FASTBOOT OEM UNLOCK or is there something else?
Boot loader is not locked
3UR0TR45H said:
I'm getting my T-MO G3 returned soon and would like to unlock the bootloader asap but I'm not exactly sure how. Is it just FASTBOOT OEM UNLOCK or is there something else?
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Click to collapse
whats the need for urgency ? there isnt a recovery even released yet.
wavrunrx said:
whats the need for urgency ? there isnt a recovery even released yet.
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Click to collapse
Whenever I've unlocked a bootloader, it wipes the device. I'd rather do that before I set it up with my apps and accounts.
BACARDILIMON said:
Boot loader is not locked
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Click to collapse
Correct me if I am wrong but every phone comes with a locked bootloader even the nexus line you need to unlock. We really need to stop calling encrypted bootloaders locked. So this phone isn't encrypted but surely it is locked.
Our G3 is the only one that's unlocked.
rumor has it tmobile g3 isn't locked
mgbotoe said:
rumor has it tmobile g3 isn't locked
Click to expand...
Click to collapse
I'm confused I have an note 3 verizon. I am trading in my note 3 becaues of lock down bootloaders. will the G3 be easier to unlock? I have been reading that T moblie is the only one that comes unlocked.... Hmmm need some help befoere I jump Thanks
Guys. There is a difference between unlocked and unlockable. This being unlocked means there's nothing really to do. That's why it's so unusual.
mgbotoe said:
rumor has it tmobile g3 isn't locked
Click to expand...
Click to collapse
I believe It's unlocked. Rooted with twrp
Unlocked, just rooted and installed twrp, nothing else to do about it.
Go here: http://forum.xda-developers.com/lg-g3/development/root-twrp-root-twrp-tmo-lg-g3-t2821005
Sent from my LG-D851 using XDA Premium 4 mobile app

Remove 'bootloader unlocked!' text?

Hi guys. I want to remove this warning message when i boot up my phone. Can anyone help me? Thanks!
being able to do this would be great! I tried all the fastboot commands that work on different devices to re-lock the bootloader, flashed the bootloaders again...downgrade to Android 5, uncheck enable EOM unlock in the developer options..tried fastboot commands.. all was in vain...
Any other ideas?
rigocalin said:
being able to do this would be great! I tried all the fastboot commands that work on different devices to re-lock the bootloader, flashed the bootloaders again...downgrade to Android 5, uncheck enable EOM unlock in the developer options..tried fastboot commands.. all was in vain...
Any other ideas?
Click to expand...
Click to collapse
I don't want to relock my bootloader. My goal is just removing this message. Because if the bootloop issue happen to me, sellers will not know that i've unlocked my bootloader. So they will repair my phone for free.
please can any mod close this? Has already been asked and answered. it's not possible! Do a damn search before!
there is not mention of this as far as I sow it anyways...
If you have it then post the link here so we can see it also .
PS: under the same logic we would not try to find a root or bootloader unlock and talk about it because its not currently possible.
5nickers said:
please can any mod close this? Has already been asked and answered. it's not possible! Do a damn search before!
Click to expand...
Click to collapse
If your in the EU and phone is still under warranty, LG will repair defected devices regardless if BL is unlocked as its a known defect. Read this thread.
http://forum.xda-developers.com/g4/help/g4-bootloop-lg-officially-admits-t3301629
awes0me1 said:
If your in the EU and phone is still under warranty, LG will repair defected devices regardless if BL is unlocked as its a known defect. Read this thread.
http://forum.xda-developers.com/g4/help/g4-bootloop-lg-officially-admits-t3301629
Click to expand...
Click to collapse
I live in asia region. I talked with the seller where that i bought (third party shop) and they said that unlocking BL void warranty. That is why i want to hide this message
Then it's a no...you cannot remove message when booting.
awes0me1 said:
Then it's a no...you cannot remove message when booting.
Click to expand...
Click to collapse
There are marshmallow boot animation in forums for g4. But i am not sure if it can hide this message or not.
xdaorxan said:
There are marshmallow boot animation in forums for g4. But i am not sure if it can hide this message or not.
Click to expand...
Click to collapse
No, as the message appears before the bootanimation.
davebugyi said:
No, as the message appears before the bootanimation.
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Click to collapse
That's awful
I read about a guy saying something like changing the I-M-E-I (dont want to get banned or something) to something else, reboot and then restore it, you should have a relocked bootloader..
it sounds a bit shady but maybe this can actually work...depending on how this unlock is done.
https://www.youtube.com/watch?v=DZBFc2Da83E
This guy actually relocked the bootloader nice

LG V30+ download missing, root gone, and bootloader locked

I would like to thank everyone for there support for this most awesome but difficult phone. I have an unlocked US LG V30+ phone which an error in cross flashing accidently caused my phone to loose everything I needed to use LGUP. Does anyone know of an exe rom to flash on this phone to regain download option or a full restore to start fresh to do the rooting the right way? I know some mobile devices have exe for full restore but haven't found one for this phone yet.
Thanks again and I hope for a possible positive answer.
mcarden2006 said:
I would like to thank everyone for there support for this most awesome but difficult phone. I have an unlocked US LG V30+ phone which an error in cross flashing accidently caused my phone to loose everything I needed to use LGUP. Does anyone know of an exe rom to flash on this phone to regain download option or a full restore to start fresh to do the rooting the right way? I know some mobile devices have exe for full restore but haven't found one for this phone yet.
Thanks again and I hope for a possible positive answer.
Click to expand...
Click to collapse
Your bootloader is NOT relocked unless you flashed fastboot command to re-lock it.
Your bootloader is still unlocked.
ChazzMatt said:
Your bootloader is NOT relocked unless you flashed fastboot command to re-lock it.
Your bootloader is still unlocked.
Click to expand...
Click to collapse
It's locked.
mcarden2006 said:
It's locked.
Click to expand...
Click to collapse
Then start over to unlock bootloader https://forum.xda-developers.com/showpost.php?p=76584629&postcount=193

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