Help with LG V20 US996 demo unit unlocking boot loader failed at LG developer website - LG V20 Questions & Answers

Hi, i hope this is the right forum, i am a noobie at LG flashing, been reading some, but it is a little confusing (coming from Oneplus One), so i bought an LG V20 - US996, and i thought i could unlock the bootloader via LG Developers website, so i started the process, install drivers, follow the instructions, etc. then when i submitted IMEI and device id i got an error, message, stating :your device (TEST_GPIN) does not support unlocking bootloader", i emailed LG with the question but still no answer, so i did a little research and found out that my phone is a demo unit or something like it. on the inside sticker it says "not for sale" the model on the sticker is US996. i have attached some screens that show software versions etc.
so basically i would like to know if anyone knows if i am out of luck and cant unlock the bootloader to flash twrp and root, or if it can be done, and point me in the right direction, any help will be greatly appreciated.
i obviously would not want to brick my device, but am willing to try to unlock if possible.
thanks.

That's very interesting. Wondering if that's the model the debug bootloader was pulled from to root the US carrier v20's. I'm not an expert in this but have you tried to flash the us99610f (Dec 1 2016 sec patch) kdz using LG UP. That should put you on official LG firmware that is still rootable. The kdz will flash every piece of firmware getting you off of that demo firmware. From there you could try to unlock the bootloader again using LGs website, or worst case use dirtysanta to root the phone if you wish. There's a hacked lgup thread somewhere in the guide section that should do the trick.

thanks toastyp, i will download 10f, and look for the hacked lgup.

rluque35 said:
thanks toastyp, i will download 10f, and look for the hacked lgup.
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Click to collapse
Here's the link just in case
https://www.google.com/amp/s/forum....e-patch-lgup-to-unlock-features-t3652222/amp/

thanks guys, i used LGUP from Prowler_gr thread https://forum.xda-developers.com/v20/how-to/guide-patch-lgup-to-unlock-features-t3652222/page8 Thanks by the way.
downloaded 10f, and flashed with LGUP, no i have a fully working US996 (not demo version) at US99610f, i will keep reading so i can do the bootloader unlock and root.
thanks again for your help

rluque35 said:
thanks guys, i used LGUP from Prowler_gr thread https://forum.xda-developers.com/v20/how-to/guide-patch-lgup-to-unlock-features-t3652222/page8 Thanks by the way.
downloaded 10f, and flashed with LGUP, no i have a fully working US996 (not demo version) at US99610f, i will keep reading so i can do the bootloader unlock and root.
thanks again for your help
Click to expand...
Click to collapse
Glad everything worked for you. I would try to root using LGs official unlock.bin method as it will be the easiest way to root the phone. Plus you get to keep your stock bootloader which is potentially helpful in the event LG implements ARB on the us996. If it still doesn't work you can try the dirty elf thread. I believe it's the dirtysanta method for the us996. This process will flash a debug bootloader with full fastboot commands that is unlocked. From there you can flash twrp normally.
https://www.google.com/amp/s/forum....0-h915us996-dirtyelf-bootloader-t3568013/amp/

thanks toastyp, LG official unlock still not working, as i guess the IMEI is still recognized as from a demo unit, i will try dirty elf method, might take a while since my home pc just died (mobo or cpu) anyway , as soon as i can i will try it.
thanks.

Related

Lg v20 h910 kdz?

Hello, I was searching for KDZ and was able to stumble into this model LG V20 H910PR.
Since I don't have a H910 model to test this. Anyone here who has a bricked ATT H910 that would like to test if this KDZ would work.
Link: https://lg-firmwares.com/lg-h910pr-firmwares/
Its been tested. It breaks radio
me2151 said:
Its been tested. It breaks radio
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Click to collapse
Can you unroot / get it back to stock though? *even if it breaks radio?*
tcanute said:
Can you unroot / get it back to stock though? *even if it breaks radio?*
Click to expand...
Click to collapse
Yes but its pointless without radio. BTW when I say radio I'm talking about cell service. You will get no service and its impossible to fix while in the stock state. That's why its pointless
me2151 said:
Its been tested. It breaks radio
Click to expand...
Click to collapse
glad to hear that. there's still hope for those who bricked their device from faulty OTA updates
Edit: aww i thought it was music radio. too bad.
h910pr
i have successfully restored to the h910pr kdz with working radio (cell signal). id love to get back to a rooted firmware but for now it was at least a viable way to debrick my phone.
HOW!
predheadtx said:
i have successfully restored to the h910pr kdz with working radio (cell signal). id love to get back to a rooted firmware but for now it was at least a viable way to debrick my phone.
Click to expand...
Click to collapse
How!? Is your phone an h910 running on at&t? Is there anything specific you did when restoring the kdz or did you follow a specific guide? What does your "About Phone" show your phone as being?
Sorry for all the questions, that's just kinda exciting to hear
tcanute said:
How!? Is your phone an h910 running on at&t? Is there anything specific you did when restoring the kdz or did you follow a specific guide? What does your "About Phone" show your phone as being?
Yes im on at&t and have had no issues with data, text, or calling. my damn watch still wont sync to my phone but that was a prior issue as well. i scoured the internet for everything i could get my hands on and what i received was a bunch of guesses mostly lol. so i modified the h918 lgup dll to allow me to flash my h910. it accepted the h910pr software without issues. other than being back on a locked boot-loader with no way out in sight. if you can deal with a rare instance of a notification being in spanish then go for it. ask and ill post my tools folder somewhere, so you can try the exact versions of lgup i used and the tweaked dll
Click to expand...
Click to collapse
predheadtx said:
Yes im on at&t and have had no issues with data, text, or calling. my damn watch still wont sync to my phone but that was a prior issue as well. i scoured the internet for everything i could get my hands on and what i received was a bunch of guesses mostly lol. so i modified the h918 lgup dll to allow me to flash my h910. it accepted the h910pr software without issues. other than being back on a locked boot-loader with no way out in sight. if you can deal with a rare instance of a notification being in spanish then go for it. ask and ill post my tools folder somewhere, so you can try the exact versions of lgup i used and the tweaked dll
Click to expand...
Click to collapse
Sure if you don't mind. That would be great.
tcanute said:
Sure if you don't mind. That would be great.
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Click to collapse
okay, uploading at 600kb/s :/ ill edit this post with the link when its done. just install lgup and the lg mobile drivers, then paste this lgup folder over the lgup folder in your program files. what ive done is used components from different version of lgup and renamed the h918.dll to lgcommon.dll and placed it in a common folder, then created an h910 folder as well. then put the phone in download mode and lgup will recognize it as an h910 but will allow you to flash the h910pr.kdz. it was a simple little hack together that anyone can replicate. maybe someone could write up a good tutorial on it.
@predheadtx Just curious why you didn't flash the H915 KDZ since the H910 and H915 are the same phone: https://fccid.io/document.php?id=3134555 <-- notice additional model names.
At least you can root H915...
-- Brian
This thread doesn't belong in development. Needs to be moved to general.
runningnak3d said:
@predheadtx Just curious why you didn't flash the H915 KDZ since the H910 and H915 are the same phone: https://fccid.io/document.php?id=3134555 <-- notice additional model names.
At least you can root H915...
-- Brian
Click to expand...
Click to collapse
hmm hadn't realized the h910/918/915 were all the same. i only knew about the 918 being the same. does it use the same mobile bands as att? i guess ill give it a try.
With the stock firmware installed, they must use the same frequencies, or the FCC would have to test them separately.
As far as I know the H915 (In addition to being the Canadian model) is also the AT&T Go Phone. So it is to AT&T was the MSXXX (for example MS631 (Metro) and H631 (identical phone with T-Mobile firmware) are to MetroPCS / T-Mobile.
When I had MetroPCS, I would flash T-Mobile firmware because they usually got the updates quicker than Metro did.
In this case it looks like LG made generic GSM/LTE model for the H910/H915/H918. What is funny is that their carrier free phone US996 is different.
This weekend I plan on flashing H918 since I use T-Mobile, and then I can root without having this effed up bootloader.
On a different note, I 100% agree with @12MaNy that this thread does not belong here.
runningnak3d said:
With the stock firmware installed, they must use the same frequencies, or the FCC would have to test them separately.
As far as I know the H915 (In addition to being the Canadian model) is also the AT&T Go Phone. So it is to AT&T was the MSXXX (for example MS631 (Metro) and H631 (identical phone with T-Mobile firmware) are to MetroPCS / T-Mobile.
When I had MetroPCS, I would flash T-Mobile firmware because they usually got the updates quicker than Metro did.
In this case it looks like LG made generic GSM/LTE model for the H910/H915/H918. What is funny is that their carrier free phone US996 is different.
This weekend I plan on flashing H918 since I use T-Mobile, and then I can root without having this effed up bootloader.
On a different note, I 100% agree with @12MaNy that this thread does not belong here.
Click to expand...
Click to collapse
im attempting to flash the 915 .kdz right now, im looking for a workaround to lgup telling me the model numbers are mismatched. ill make attempts with the 918 firmware as well.
predheadtx said:
im attempting to flash the 915 .kdz right now, im looking for a workaround to lgup telling me the model numbers are mismatched. ill make attempts with the 918 firmware as well.
Click to expand...
Click to collapse
to anyone concerned here is the files i promise. ive hat not luck with the 915 or 918 firmware from the 910pr, maybe im missing something but nothing i do works.
https://mega.nz/#!YLxDlDBA!4SNhULZB-5rWCIUk6EJK0GB9Yul3uxGx3d_vSa4TnI8
Have you tried: https://forum.xda-developers.com/lg-g5/development/uppercut-lgup-loader-g5-variants-t3511295
I have not found a phone yet that can't be spoofed with it...
honestly now that ive seen that post, i had mistakenly thought the version of lgup i was using had been patched WITH LGuppercut. thank you for correcting me!
have been messing with uppercut. not finding any way to "spoof" anything.
edited again- luckily i had already gotten att to warranty the phone for a defect it had, but trying to flash h915 using the port 41 trick has officially bricked my phone. IT does absolutely nothing now. when plugged in to a computer windows recognizes as a qualcom usb qloader but the phone does nothing else.
Spoof was probably the wrong word to use. I mean that I have never had an LG phone that LGUP alone would not recognize, but when launched with Uppercut also would not be recognized.
You may have a corrupt misc partition. I have had to wipe the misc and the fota partitions several times due to bad flashes:
If using a confirmed working device with UPPERCUT but your device is still not detected in LGUP you may have a "corrupted" misc partition...
as a last resort it has been confirmed in post #70 that wiping misc then booting into download mode allows the device to be detected with UPPERCUT + LGUP 1.14. This may not always work. And without root you cannot do this.
Click to expand...
Click to collapse
Since that requires root, you may be in a pickle.
runningnak3d said:
Spoof was probably the wrong word to use. I mean that I have never had an LG phone that LGUP alone would not recognize, but when launched with Uppercut also would not be recognized.
You may have a corrupt misc partition. I have had to wipe the misc and the fota partitions several times due to bad flashes:
Since that requires root, you may be in a pickle.
Click to expand...
Click to collapse
having lgup recognizing the device has never been the issue. its cross flashing firmware's that it refuses to do.

Need a T-Mobile user with an unlocked bootloader to test something out

i have modified LGUP to flash individual partitions, but being as i do not own the G6 i cannot test it out for myself. if someone would like to test out possibly being the world's first G6 user with TWRP on it please respond to this!
EDIT: I have gotten a tester and my modded LGUP will dump the partitions of the device, but will not write yet...
Hey
Honestly Annoying said:
i have modified LGUP to flash individual partitions, but being as i do not own the G6 i cannot test it out for myself. if someone would like to test out possibly being the world's first G6 user with TWRP on it please respond to this!
Click to expand...
Click to collapse
I could test when I get home.I have rooted a lot of phones and would like to see twrp on this device
There's hope.
Sent from my LG-H872 using Tapatalk
Ok now where is the file? i'm new with g6 always do nexus give the instruction and i will test for you i'm ready to test and root my great first Android phone without root and i'm love how its work with out i can't imagine with root!!!!
If you upload the files with some instructions I can test it. How likely is it to brick the phone? Assuming it's only trying to flash a recovery it shouldn't be too hard to fix if anything goes wrong, but I just want to be safe.
This is my first LG device so some instructions on all the LGUP stuff would be appreciated.
Ok . I have unlocked my bootloader. What do you me to test?

LGUP dump take forever?

Hey everyone. I'm new to LG devices. Had Samsung notes for years. Just picked up a carrier unlocked ATT V35 ThinQ, and been trying to use the LGUP tool to dump all partitions before I try my hand at flashing a newer firmware.
But it seems to take forever. Like more than 10 hours on some partitions. I haven't been able to complete a dump yet.
Are my expectations too high? Am I using the wrong tool? How long should a dump of a stock install take?
I'm using LGUP 1.14, and following some online tutorials I found. Seems to be doing what it's supposed to, just super duper slow.
Any assistance is welcome. Thanks.
Forget about full dump - it is LAF restricted. For full dump you will need to unlock your bootloader, enable fastboot and flash engineering LAF afterwards.
Damn, really. No wonder.
Doesn't seemlike anyone's getting bootloaders unlocked, unless they send their v35 to China, from what I've read so far. I guess I'll keep checking the forums.
Thank you for your help though.
Well sending to China is still an option, but you can contact this guy and unlock your bootloader for about 5 minutes remotely.

H870 - Installed Stock Rom But Warranty Still Rejected

I installed the HavocOS on my LG G6 H870. When I needed to make use of the warranty because of a broken headphone jack, I tried to install a Stock Rom. I used the "international" version from here since I live in Germany (also locked the bootloader before).
However, the service by the warranty provider was denied because they identified my phone as "G6 Dual (LGH870DS)" and were therefore not responsible for repairs.
However, in the phone info, the model is labeled "LG-H870". Hardware Version "Rev. 1.0". Baseband Version "MPSS.TH.2.0.1.c3.1-00014-M8996FAAAANAZM-1.86009.21" and Software Version "V10d-EUR-XX".
I can not really understand their reasoning. Does anybody have an idea what Stock Rom I need to flash so that the warranty provider accepts it? Note: the phone was serviced by them before because of another issue, but at a point when I did not yet flash a custom Rom.
Thanks in advance
If You live in Germany, EU law says that manufacturer can't cancel Your warranty because of unlocked bootloader unless Your phone is not modified. So if there are no signs of modification like root, wrong firmware or custom recovery they can't cancel it. If You have H870 model flash >>>THIS<<< firmware and then in fastboot type fastboot oem lock to make sure bootloader is locked and wipe phone.
Chamelleon said:
If You live in Germany, EU law says that manufacturer can't cancel Your warranty because of unlocked bootloader unless Your phone is not modified. So if there are no signs of modification like root, wrong firmware or custom recovery they can't cancel it. If You have H870 model flash >>>THIS<<< firmware and then in fastboot type fastboot oem lock to make sure bootloader is locked and wipe phone.
Click to expand...
Click to collapse
Thanks!
I'm going to flash the ROM from the link you provided and then send it out for service a second time.
In my eyes there are two possible explanations for the previous rejection:
1. The service provider made a mistake in their routine of detecting the model/software version. The fact that I put a custom rom on the phone before might have caused an issue there.
2. I made a mistake when flashing the H870 software. The source from my first post also does not seem to be an official LG link, other than the one you provided.
So thanks for the link again!
Edit: Should I still use the flashing guide from here (https://www.**********.com/download...-g6/#How_to_Install_Stock_Firmware_on_LG_G6)? The website is droid views (one word), it gets deleted by xda for some reason.
Not sure if relevant, but I had to use this tool (https://forum.xda-developers.com/lg-g5/development/uppercut-lgup-loader-g5-variants-t3511295) so that my phone would show up in LGUP...
I use Z3x for LG flashing so don't know much about LGUP but I assume if there is an option to flash stock KDZ files it's what You need. I'm almost sure that You can't flash H870 with KDZ different than stock but again never tried mixing firmwares.
huzgu444 said:
Thanks!
I'm going to flash the ROM from the link you provided and then send it out for service a second time.
In my eyes there are two possible explanations for the previous rejection:
1. The service provider made a mistake in their routine of detecting the model/software version. The fact that I put a custom rom on the phone before might have caused an issue there.
2. I made a mistake when flashing the H870 software. The source from my first post also does not seem to be an official LG link, other than the one you provided.
So thanks for the link again!
Edit: Should I still use the flashing guide from here (https://www.**********.com/download...-g6/#How_to_Install_Stock_Firmware_on_LG_G6)? The website is droid views (one word), it gets deleted by xda for some reason.
Not sure if relevant, but I had to use this tool (https://forum.xda-developers.com/lg-g5/development/uppercut-lgup-loader-g5-variants-t3511295) so that my phone would show up in LGUP...
Click to expand...
Click to collapse
I would guess it is simple to tell if you have H870 or H870DS as the H870DS has 64GB storage and the H870 only 32GB. Also the DS has 2 SIM card slots. Goto Settings, Storage and look at the internal storage, my H870 says 25.94GB used of 32.00GB
Sent from my LG-H870 using Tapatalk
Chamelleon said:
If You live in Germany, EU law says that manufacturer can't cancel Your warranty because of unlocked bootloader unless Your phone is not modified. So if there are no signs of modification like root, wrong firmware or custom recovery they can't cancel it. If You have H870 model flash >>>THIS<<< firmware and then in fastboot type fastboot oem lock to make sure bootloader is locked and wipe phone.
Click to expand...
Click to collapse
The service provider now accepted the device with the firmware from the link you provided and repaired it without any charge. Thanks again!

Ebay LS997 w/ US996 firmware rooting?

So my beloved LS997's charging port has given up the good fight and no longer works, so I have been hamstringing it along charging batteries outside the phone using an external battery charger... And bought myself a "New Unlocked LS997" that came with Android 7.0 with the intention of rooting it and flashing LineageOS on it and being good to go.
Problem though, Dirty Santa doesn't seem to work beyond step one, and when I attempt to flash a different KDZ per other rooting methods I am getting a SPC code error preventing me from flashing said KDZ.
Anyone have any luck rooting these devices? Thanks in advance!
Americancosworth said:
So my beloved LS997's charging port has given up the good fight and no longer works, so I have been hamstringing it along charging batteries outside the phone using an external battery charger... And bought myself a "New Unlocked LS997" that came with Android 7.0 with the intention of rooting it and flashing LineageOS on it and being good to go.
Problem though, Dirty Santa doesn't seem to work beyond step one, and when I attempt to flash a different KDZ per other rooting methods I am getting a SPC code error preventing me from flashing said KDZ.
Anyone have any luck rooting these devices? Thanks in advance!
Click to expand...
Click to collapse
Use the How to root ZV7 guide by runningnaked. Also you need to flash the vs995 file with Uppercut or the modified Uppercut floating around somewhere. If you are past ZV7 you can't do anything for root. With Uppercut make sure your phone is all set for adb and properly connected. Then also try to open Uppercut as administrator. It will show dump system and other options at bottom if loaded correctly.
If us996...then try the official lg unlock bootloader method. What I described is for ls997.
Ls997 cross flashed to us996...idk. depends on what software version if that's that case.
As for adb...when connected to PC make sure to also have photo transfer selected instead of file tranfer.
If it's an LS997 that's been cross-flashed to US996 firmware, then it should be rootable because if it weren't , then you wouldn't even be able to cross-flash anything on it.
Americancosworth said:
Problem though, Dirty Santa doesn't seem to work beyond step one, and when I attempt to flash a different KDZ per other rooting methods I am getting a SPC code error preventing me from flashing said KDZ.
Anyone have any luck rooting these devices? Thanks in advance!
Click to expand...
Click to collapse
I used the modified LGUP found over here.
Make sure you put the phone in download mode (with the phone powered off, hold down volume-up, then connect the phone via USB to your computer) before running LGUP. The rooting guides don't mention this since they assume you know how to downgrade firmware before starting the main rooting procedure.
C D said:
If it's an LS997 that's been cross-flashed to US996 firmware, then it should be rootable because if it weren't , then you wouldn't even be able to cross-flash anything on it.
I used the modified LGUP found over here.
Make sure you put the phone in download mode (with the phone powered off, hold down volume-up, then connect the phone via USB to your computer) before running LGUP. The rooting guides don't mention this since they assume you know how to downgrade firmware before starting the main rooting procedure.
Click to expand...
Click to collapse
My mistake...yes download mode before lg up...not adb. True on the cross flashed and being rootable.

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