Database Users

Revert back to locked state after unofficial unlock (Redmi note 3 pro/SD)

Hi All, I have unlocked the bootloader the unnofical way and i am on global 7.1.7.0(LHOMICL) with twrp and root.
I now have recieved the official sms to unlock from xiaomi.
Already i had to open the phone 3 times to get into edl mode. I really dont wont to open the phone agian.
When i try to unlock the tool answers no need to unlock. I think this is because i flashed the adapted emmc_appsboot.mbn and boot.img thru fastboot.
Do i have to change te rom to another version before i try thru edl or fastboot? What is the best procedure to official unlock now because i read a lot of bricks if they try to revert back to original state.
Can some one give me a detailed guide? Thanx in advance.

You need to flash a fully stock edl ROM on top of your current setup.
This will wipe out your hacked bootloader and throw the original (still locked) one back onto your device.
Then just unlock as usual. I did the procedure myself today already as I got my unlock notification today as well.

Ok thnx for the info. I have changed this global rom 7.1.7.0 in great extend and dont wont to lose this setup.
So can I backup my current setup with twrp with the hacked bootloader.
Flash the complete global 7.1.7.0 in edl mode. Unlock with the unlock tool.
Root the rom and install twrp.
After this can i restore the backup with the hacked bootloader with twrp?
I dont know how the unlock tool of xiaomi works, so i could leave the official bootloader in place when i do the restore with twrp and only replace system and data partition or can i flash all the parts back with twrp to keep the unlock?
Wich procedure will keep the official unlock in place or will this unlock stick always?

davegrond said:
Hi All, I have unlocked the bootloader the unnofical way and i am on global 7.1.7.0(LHOMICL) with twrp and root.
I now have recieved the official sms to unlock from xiaomi.
Already i had to open the phone 3 times to get into edl mode. I really dont wont to open the phone agian.
When i try to unlock the tool answers no need to unlock. I think this is because i flashed the adapted emmc_appsboot.mbn and boot.img thru fastboot.
Do i have to change te rom to another version before i try thru edl or fastboot? What is the best procedure to official unlock now because i read a lot of bricks if they try to revert back to original state.
Can some one give me a detailed guide? Thanx in advance.
Click to expand...
Click to collapse
Plz could you help me and tell me where you got the hacked unlocked bootloader cause I bricked my redmi note 3 pro snap dragon and only only fastboot is available and when I try to flash it I get the message device locked boot locked can not flash and plz hobe me a detaild link and downloads and how to flash also I did not get the unlock code and how to get the locked one back z original plz help best regards

Plz indeed to know how to hack the bootloader cause I bricked my phone and I need to make it life

MrColdbird said:
You need to flash a fully stock edl ROM on top of your current setup.
This will wipe out your hacked bootloader and throw the original (still locked) one back onto your device.
Then just unlock as usual. I did the procedure myself today already as I got my unlock notification today as well.
Click to expand...
Click to collapse
please give a detailed tutorial how to do it. I am now in AOSP with unofficially unlocked bootloader. How to relock it again to unlock officially?

Relock Bootloader
I see many asking how to Relock Bootloader, especially those who had unlocked unofficially.
The steps to be followed are following:
(1) Turn on USB debugging for your phone;
Go to Settings -- About Phone --> Touch 7 times on "MIUI version" to Enable Developer Options.
Now go to Settings - Additional Settings - Developer Options --> USB debugging.
Enable USB Debugging and Connect to PC.
(2) Download Fastboot ROM (file extension .tgz or .tar) from
Code:
http://en.miui.com/a-234.html
(3) Boot into EDL
adb devices (to check it's connected)
adb reboot edl
(4) Use MI Flash Tool to Flash the Fastboot ROM
PS: It is assumed that person knows how to get drivers installed for phone if not already, use ADB command as well as know MI Flash Tool basics.
@BRoy_98 @ioosis @davegrond : hope this helps.
@MrColdbird Thanks for the tip

BRoy_98 said:
please give a detailed tutorial how to do it. I am now in AOSP with unofficially unlocked bootloader. How to relock it again to unlock officially?
Click to expand...
Click to collapse
Thx
Sent from my Redmi Note 3 using XDA-Developers mobile app

Unable to relock
Someone please let me know how to relock the bootloader.
I tried flashing the global rom using flash tool but still it says unlocked when i check it from fastboot mode.

anwar08 said:
Someone please let me know how to relock the bootloader.
I tried flashing the global rom using flash tool but still it says unlocked when i check it from fastboot mode.
Click to expand...
Click to collapse
On MiFlash, select folder of Fastboot ROM, then click on Advanced, and in fastboot script select flash_all_lock.bat. After it, close MiFlash then open it again and check in advanced if flash_all_lock.bat comes selected. If yes, close advanced box and flash ROM. Don't forget to close and open MiFlash after choose flash_all_lock.bat script, it's important step. And you can do it in Fastboot mode, don't need to go to EDL mode to flash the ROM.

andersonaragao said:
On MiFlash, select folder of Fastboot ROM, then click on Advanced, and in fastboot script select flash_all_lock.bat. After it, close MiFlash then open it again and check in advanced if flash_all_lock.bat comes selected. If yes, close advanced box and flash ROM. Don't forget to close and open MiFlash after choose flash_all_lock.bat script, it's important step. And you can do it in Fastboot mode, don't need to go to EDL mode to flash the ROM.
View attachment 3854529 View attachment 3854530 View attachment 3854531 View attachment 3854532
Click to expand...
Click to collapse
Am using the 32 bit beta version and there is no Advanced option

anwar08 said:
Am using the 32 bit beta version and there is no Advanced option
Click to expand...
Click to collapse
see if it's in Configuration.

warranty
does rooting redmi note 3 void warranty bcuz it has a locked bootloader and cannot root without unlocking it ????
and can we lock bootloader again for warranty claims ????
plzz help ???
ty.

Why can't we directly update the device..
Like after flashing miui ROM (7.1)then installing (8.1)....will the bootloader get locked....
?....somebody have any idea place help out

Q. Can the device be rooted without voiding warranty?
A. Yes, by unlocking the BL unofficially.
Q. Once rooted and on MiUI, can I update using Updater?
A. No! You'll lock your BL and end up in a bootloop. Instead, use the updater to download the zip file, reboot into recovery (TWRP or ZCX) flash the zip first and then the universal boot.img patched/lazy flasher and reboot to system.

I followed the method mentioned in the replies to relock the bootloader, i.e, flashed the fastboot rom in edl mode
But for some strange reason, when I entered the fastboot mode and checked whether the bootloader is locked or not by "fastboot oem device-info", it said "Device Unlocked: True"
The main problem came when I booted into the ROM; It broke all kinds of wireless connections. The wifi malfunctioned, the phone wouldn't read the SIM cards etc.
Is there a solution? Please help
Thanks

Unable to Unlock Bootloader

Hello, im trying to Unlock the bootloader of a Mi HM Note 1LTEW , Miui Versión: MIUI- KHICNBF28.0.
I'm already made the steps requesting access to Unlock it to MIUI. I've downloaded the tool to Unlock, restart the phone to fastboot mode but the tool never get the button "Unlock" green.. its like the phone isn't recognized by the tool. But, with a command windows opened it get recognized by fastboot devices command.
I think i need to Unlock the bootloader to install a custom recovery and install others rom. I only need to install the MIUI- versión EU which have gapps and have deleted all chinesse things
Hope somebody can help
Thanks

Mod please Close and delete this tread. Thank you
Sent from my N5 (Nougat)

mendozaram said:
Hello, im trying to Unlock the bootloader of a Mi HM Note 1LTEW , Miui Versión: MIUI- KHICNBF28.0.
I'm already made the steps requesting access to Unlock it to MIUI. I've downloaded the tool to Unlock, restart the phone to fastboot mode but the tool never get the button "Unlock" green.. its like the phone isn't recognized by the tool. But, with a command windows opened it get recognized by fastboot devices command.
I think i need to Unlock the bootloader to install a custom recovery and install others rom. I only need to install the MIUI- versión EU which have gapps and have deleted all chinesse things
Hope somebody can help
Thanks
Click to expand...
Click to collapse
hey..
i know it is old thread but same pb.. device is MTK and i have never found a custom recovery for this device..did u find the custom recovery..? or anyone has customm recovery..?

OEM unlock

I have the Chinese version of axon 7 and under development options I can click on OEM unlock then it asks for a pin number. How do I get that pin number?

Have you contacted zte customer service?

Please let me know how this turns out
I've been around these forums multiple times now and the ways that should work don't seem to work for me :/ Can't find a confirmed unlock of the Chinese version and am stuck on B13 while I wany Cyanogen.

If you go and sign up for ztes website and then go to the developers lounge there is a lot of talk about bootloader unlock. The way I read it you could have signed up to receive a pin number to unlock bootloader but zte has put that on hold? But are suppose to start it back up?

you can flash unlock bootloader in port 9008, I unlocked successfully by this way

@jiabing520a could you explain how?
after booting into recovery my device isnt visible in the device list from adb.

enkrs said:
@jiabing520a could you explain how?
after booting into recovery my device isnt visible in the device list from adb.
Click to expand...
Click to collapse
Did you flash twrp ? Official recovery does not support adb.
If you have already flashed twrp, then open computer manager- device manager, you will see your phone doesn‘t work correctly (triangle) , right click on the triangle, and click update driver, then computer will fix this proble automatically.

Can not even get to flashing the TWRP, so stock recovery.
I want to backup the recovery.img in case i brick the device after doing
adb reboot recovery the device cant be found any more in the adb device list so nothing from that.
I tried to sideload it using the adb sideload but the same
it`s saying waiting for device and stays there even when i`m trying to send a file to the device.

Ok little update.
tried to downgrade but getting the error footer not correct and unable to verify.
Normaly saying you can disable this using the TWRP system as i cannot even get the bootloader to unlock.
So i cant get TWRP installed on the device.
If anyone knows how to downgrade the b13 to the b10 so we can use the tools provided in other posts
Please help how further .

enkrs said:
Can not even get to flashing the TWRP, so stock recovery.
I want to backup the recovery.img in case i brick the device after doing
adb reboot recovery the device cant be found any more in the adb device list so nothing from that.
I tried to sideload it using the adb sideload but the same
it`s saying waiting for device and stays there even when i`m trying to send a file to the device.
Click to expand...
Click to collapse
waiting for device...you should kill adb process first, and then reconnect your pc
---------- Post added at 11:33 ---------- Previous post was at 11:32 ----------
enkrs said:
Ok little update.
tried to downgrade but getting the error footer not correct and unable to verify.
Normaly saying you can disable this using the TWRP system as i cannot even get the bootloader to unlock.
So i cant get TWRP installed on the device.
If anyone knows how to downgrade the b13 to the b10 so we can use the tools provided in other posts
Please help how further .
Click to expand...
Click to collapse
if you want to downgrade the b13 to the b10，maybe you should use official recovery

If you can explain how to downgrade using the original recovery please i have tried sideloading
and placing the rom file in the location reserved for update etc.

enkrs said:
If you can explain how to downgrade using the original recovery please i have tried sideloading
and placing the rom file in the location reserved for update etc.
Click to expand...
Click to collapse
Hello Mate,
I am in the same situation as you. I have been looking all over the internet and came across a Chinese forum. Apparently, it is possible to unlock and root B13. However, I have used Google translater to translate the page. It's hard to understand the steps. I have not tested it. But maybe someone out there will have a better understanding and could give it a go. Here is the link
http://www.myzte.cn/forum.php?mod=viewthread&tid=320458&mobile=2
Hope that helps

Help with finding root file for J5 Prime g570Y

hi
i use a j5 Prime sm-G570Y on andriod Oreo
i can't find the proper root files to flash using Odin as most of them are either not for andriod Oreo or for the g570F, not Y
i've tried using Odin to root my phone before, but all that happend was that my phone got bricked so i'm not really willing to try and root again unless i know that the root file is specifically for my exact phone model and Android version
if someone has any info on root files for my phone it would be of gr8 help
oso im new here and i dk technical terms sozz

Do you have twrp?
If yes just flash magisk.

garylawwd said:
Do you have twrp?
If yes just flash magisk.
Click to expand...
Click to collapse
i dont have it installed
i tried to install it but i get stuck on <waiting for devices>
plus i've also updated drivers for my phone (j5 prime)
im really really confused right now, help would be apprectiated

leguy said:
i dont have it installed
i tried to install it but i get stuck on <waiting for devices>
plus i've also updated drivers for my phone (j5 prime)
im really really confused right now, help would be apprectiated
Click to expand...
Click to collapse
You got stuck on waiting for devices because you didnt enable OEM unlocking and USB debugging from developer options in settings.
You need to go to settings - about device - click on the build number 7 times and you unlock developer options.

garylawwd said:
You got stuck on waiting for devices because you didnt enable OEM unlocking and USB debugging from developer options in settings.
You need to go to settings - about device - click on the build number 7 times and you unlock developer options.
Click to expand...
Click to collapse
I enabled Usb debugging and OEM unlock before i tried it

so what i did was open up cmd,
type cd <place where SDK files are>
type adb devices
type adb reboot bootloader
at this point the phone enters download mode
then i type fastboot flash recovery twrp.img (i renamed the twrp file for my phone to twrp)
then the waiting for device thing appears
i tried rebooting and using fastboot oem unlock instead, but it still said waiting for device

Check if CFAutoRoot is available for your device... If not available you can create from there

Lg v20 h91820h t-mobile bootloader cannot be unlocked - android 8 oreo

UPDATE:
I successfully unlocked the bootloader, flashed twrp, rooted, updated kernel and roms, tweaking gpu cpu for performance in pubg etc, greenify, flashify, power nap everything.
xposed framework take you in bootloop for this device.
now i am on kernel mk2000, superv20 rom, h91810u, 7 nougat.
if in future anyone feels any problem i am always here.
remember: linus is your friend for this device, and windows 10 suck.
and
sudo $(which fastboot) did miracles for me....
old post:
Hello everyone.
i am new here and i am sorry in advance if i did something wrong. i will come directly to the point.
model number: LG V20 T-MOBILE VERSION, H91820H, NON USA, Currently on oreo android 8.
we are not talking about any kind of roms kernels roots or anything here. just a simple question. " can this model's boot loader be unlocked ? like ever ? or not "
cause i have tried everything, when i say everything i mean everything. followed several posts on internet videos on you tube posts on XDA, tried using multiple PCs, multiple data cables, multiple drivers but for some reason i don't know what, this model's boot loader cannot be unlocked.
THE ERROR:
<WAITING FOR DEVICE> till eternity.
what i have done till now ?
1. lg drivers installed.
2. adb drivers installed with adb fastboot files.
3. updating legacy android adb interface driver, done.
4. went in to boot loader then connected the data cable and updated driver, done.
5. usb debugging oem unlock options activated, done.
6. restarted pc multiple times to update drivers, done.
we all know all it takes is 3 easy commands to unlock bootlaoder
adb reboot bootloader
fastboot oem unlock
fastboot reboot
but in my case i always stuck at 2nd command. waiting for device is shown and nothing happens.
then i ran command, adb devices>> it shows
List of devices attached
adb server is out of date. killing...
* daemon started successfully *
LGH9182bfc6bdc device
next i put the command, fastboot devices and nothing is shown i just go to the next line... c:\adb>
so this is for sure that my device is not connected to the fastboot.
now my only question is, can this device bootloader unlock or not ? so that i stop pushing my limits.
any help will be appreciated.
regards.

X_BlackBurn_X said:
Hello everyone.
i am new here and i am sorry in advance if i did something wrong. i will come directly to the point.
model number: LG V20 T-MOBILE VERSION, H91820H, NON USA, Currently on oreo android 8.
we are not talking about any kind of roms kernels roots or anything here. just a simple question. " can this model's boot loader be unlocked ? like ever ? or not "
cause i have tried everything, when i say everything i mean everything. followed several posts on internet videos on you tube posts on XDA, tried using multiple PCs, multiple data cables, multiple drivers but for some reason i don't know what, this model's boot loader cannot be unlocked.
THE ERROR:
<WAITING FOR DEVICE> till eternity.
what i have done till now ?
1. lg drivers installed.
2. adb drivers installed with adb fastboot files.
3. updating legacy android adb interface driver, done.
4. went in to boot loader then connected the data cable and updated driver, done.
5. usb debugging oem unlock options activated, done.
6. restarted pc multiple times to update drivers, done.
we all know all it takes is 3 easy commands to unlock bootlaoder
adb reboot bootloader
fastboot oem unlock
fastboot reboot
but in my case i always stuck at 2nd command. waiting for device is shown and nothing happens.
then i ran command, adb devices>> it shows
List of devices attached
adb server is out of date. killing...
* daemon started successfully *
LGH9182bfc6bdc device
next i put the command, fastboot devices and nothing is shown i just go to the next line... c:\adb>
so this is for sure that my device is not connected to the fastboot.
now my only question is, can this device bootloader unlock or not ? so that i stop pushing my limits.
any help will be appreciated.
regards.
Click to expand...
Click to collapse
Are you following this > https://r.tapatalk.com/shareLink/to...3&share_fid=3793&share_type=t&link_source=app
[ROOT] - lafsploit - H918 (any version up to and including 20h) - now n00b friendly
Sent from my HD1907 using Tapatalk

Thanks for thanks for replying on a short notice I have seen this post there is no reason to follow any of the post because the very first stage is to unlock the bootloader but as I cannot unlock the bootloader there is no point in following any of the posts my problem is what ever way I follow I am unable to to unlock the bootloader in fact what I can see is whenever I try to type in command ADB devices IC e my phone but when I type fastboot devices nothing happens it's like my phone is not in the fastboot that is why why I cannot unlock the bootloader I have tried every possible step mentioned on the internet and on various forums I also go through some videos on YouTube those guys follow the same steps and unlock their bootloader but my device cannot unlock for some reason so if you lovely people can help me out and figure out what exactly I am doing wrong as I have followed every step of unlocking the bootloader I've installed all the drivers I have updated all the drivers I have done exactly e all three steps which has been asked but still no luck thank you

clsA said:
Are you following this > https://r.tapatalk.com/shareLink/to...3&share_fid=3793&share_type=t&link_source=app
[ROOT] - lafsploit - H918 (any version up to and including 20h) - now n00b friendly
Sent from my HD1907 using Tapatalk
Click to expand...
Click to collapse
To be very precise after following the first step while unlocking the bootloader in the second step when we type fast boot devices it should show some hexadecimal numbers and it should confirm us that our device is in the fastboot mode but in my case whenever I type this command nothing happens that means my device is not recognised to go in the bootloader this is the main problem there is no point in following any of the posts if you cannot complete the very first stage of unlocking your bootloader if you can figure out what exactly is the problem I will be thankful to you because I have followed every step possible I've updated every ADB drivers LG drivers but nothing is helping out as even before starting the procedure of unlocking the bootloader my device is not going in the fast boot also I noticed one thing when I try to go inside the bootloader screen before that in my device manager it is shown as composit device but after that I think it gets disconnected fastboot oem unlock cannot work as it gives a message of waiting for the device after going are using the command ADB reboot bootloader so my problem is the command fastboot oem unlock is pretty useless as it waits for the device and it's stuck there forever please help me out if you can I will be thankful to you regards

X_BlackBurn_X said:
To be very precise after following the first step while unlocking the bootloader in the second step when we type fast boot devices it should show some hexadecimal numbers and it should confirm us that our device is in the fastboot mode but in my case whenever I type this command nothing happens that means my device is not recognised to go in the bootloader this is the main problem there is no point in following any of the posts if you cannot complete the very first stage of unlocking your bootloader if you can figure out what exactly is the problem I will be thankful to you because I have followed every step possible I've updated every ADB drivers LG drivers but nothing is helping out as even before starting the procedure of unlocking the bootloader my device is not going in the fast boot also I noticed one thing when I try to go inside the bootloader screen before that in my device manager it is shown as composit device but after that I think it gets disconnected fastboot oem unlock cannot work as it gives a message of waiting for the device after going are using the command ADB reboot bootloader so my problem is the command fastboot oem unlock is pretty useless as it waits for the device and it's stuck there forever please help me out if you can I will be thankful to you regards
Click to expand...
Click to collapse
Did you downgrade to software version H91810P? Because that should be the first thing you have to do to get everything else to work afterwards.

C D said:
Did you downgrade to software version H91810P? Because that should be the first thing you have to do to get everything else to work afterwards.
Click to expand...
Click to collapse
Thanks for the reply.
Can you please clear me one thing. To downgrade from h91820h to h91810p you need to unlock bootloader if i am not wrong. And in that case we will be back to square 1.
Its not about installing custom rom kernel recovery root or anything. Its only about unlocking the bootloader which i cannot do.
I hope you understand my pain.
I just want to unlock my bootloader thats it.
It used only 3 commands.
1. Adb devices - shows my device.
2. Fastboot devices - no fastboot device found.
This is the problem. When you cannot find any fastboot device even updating driver by going inside the bootloader the entire mission gets failed.
I cant find any solution for this. I dont know for what reason my device cannot be listed in fastboot mode.

X_BlackBurn_X said:
Thanks for the reply.
Can you please clear me one thing. To downgrade from h91820h to h91810p you need to unlock bootloader if i am not wrong. And in that case we will be back to square 1.
Its not about installing custom rom kernel recovery root or anything. Its only about unlocking the bootloader which i cannot do.
I hope you understand my pain.
I just want to unlock my bootloader thats it.
It used only 3 commands.
1. Adb devices - shows my device.
2. Fastboot devices - no fastboot device found.
This is the problem. When you cannot find any fastboot device even updating driver by going inside the bootloader the entire mission gets failed.
I cant find any solution for this. I dont know for what reason my device cannot be listed in fastboot mode.
Click to expand...
Click to collapse
fastboot doesn't work when the phone is booted up
adb reboot bootloader
followed by fastboot devices
Note: flashing the 10p kdz does not require the bootloader be unlocked
it requires you have patched LGUP
Example:
D:\fastboot>adb devices
List of devices attached
LGUS99740047103 device
D:\fastboot>adb reboot bootloader
D:\fastboot>fastboot oem device-id
...
(bootloader) ----------------------------------
(bootloader) Device-ID
(bootloader) F3D7DE171C893D55082EAE38270125EF
(bootloader) DA7CB3E78B1DB5709A2CA8********
(bootloader) ----------------------------------
OKAY [ 0.060s]
finished. total time: 0.060s
D:\fastboot>fastboot reboot
rebooting...
finished. total time: 0.008s
D:\fastboot>adb reboot bootloader
D:\fastboot>fastboot getvar unlocked
unlocked: no
finished. total time: 0.003s
Click to expand...
Click to collapse

X_BlackBurn_X said:
Thanks for the reply.
Can you please clear me one thing. To downgrade from h91820h to h91810p you need to unlock bootloader if i am not wrong. And in that case we will be back to square 1.
Its not about installing custom rom kernel recovery root or anything. Its only about unlocking the bootloader which i cannot do.
I hope you understand my pain.
I just want to unlock my bootloader thats it.
It used only 3 commands.
1. Adb devices - shows my device.
2. Fastboot devices - no fastboot device found.
This is the problem. When you cannot find any fastboot device even updating driver by going inside the bootloader the entire mission gets failed.
I cant find any solution for this. I dont know for what reason my device cannot be listed in fastboot mode.
Click to expand...
Click to collapse
As clsA said, flashing firmware does not require an unlocked bootloader.
Look at parts 1 and 2 of the other step by step guide here:
https://forum.xda-developers.com/v20/how-to/step-step-guide-lg-v20-h918-unlocking-t3808258

clsA said:
fastboot doesn't work when the phone is booted up
adb reboot bootloader
followed by fastboot devices
Note: flashing the 10p kdz does not require the bootloader be unlocked
it requires you have patched LGUP
Example:
Click to expand...
Click to collapse
Thanks for the solution. May be this is it. All the time i have been doing it wrong.
Solution : flashing the 10p kdz does not require the bootloader be unlocked
it requires you have patched LGUP.
I will downgrade from 20h to 10p now and will give you feedback on this soon. Thanks a ton for showing a noob like me the right direction to work.

X_BlackBurn_X said:
Thanks for the solution. May be this is it. All the time i have been doing it wrong.
Solution : flashing the 10p kdz does not require the bootloader be unlocked
it requires you have patched LGUP.
I will downgrade from 20h to 10p now and will give you feedback on this soon. Thanks a ton for showing a noob like me the right direction to work.
Click to expand...
Click to collapse
No problem the link @C D posted above seems to have all the working links for you

clsA said:
No problem the link @C D posted above seems to have all the working links for you
Click to expand...
Click to collapse
well we have a new problem now.
lgup error 0x2bc invalid command response code = 0x80000202 at 4 percent while flashing.
did i just brick my phone now ? as it says dont unplug until you are done and we have been getting same error again and again.
used the provided kdz file flashing as an upgrade.

ok so the new problem is... may be i was trying to flash h91810p naugaut on to a oreo h91820h
and if i am not wrong at this stage i messed up pretty bad my phone is stuck in donwload mode wont boot up and i need to flash back 20h again to get out of this mess. can anyone hlp me ....
i just wanna know h91810p downgrading from 91820h is possible or not ? cause one is naugaut and one is oreo.

UPDATE:
i was flashing wrong h91810p thats why it was showing error. on another website i got the file compatible to my phone t mobile version and flash was successful.
now i am on h91810p software version andriod 7.
problem UPDATE:
i still cant unlock bootloader. same problem as before downgrading from h91820h.
adb devices shows device.
adb reboot bootloader
fastboot devices gives no result.
phone cannot enter in fastboot mode. the problem still remains the same even after changing the software.
kindly help guys

clsA said:
fastboot doesn't work when the phone is booted up
adb reboot bootloader
followed by fastboot devices
Note: flashing the 10p kdz does not require the bootloader be unlocked
it requires you have patched LGUP
Example:
Click to expand...
Click to collapse
hello clsA
"
D:\fastboot>adb devices
List of devices attached
LGUS99740047103 device
D:\fastboot>adb reboot bootloader
D:\fastboot>fastboot oem device-id
after this it only says waitng for device"
now i am on h91810p as i was instructed. can you please help.
its all happening the same way it was happening when was on h91820h.
fastboot devices cannot be found.
once it reboots in bootloader then it should detect a fastboot device but it doesnot and adb is also lost there.
kindly help.

NEW UPDATE:
my lg v20 now on software h91810p is actually a T MOBILE version. and when i researched more about it i found out T MOBILE deliberately locks the boot loader of many devices and its unlockable.
possible work around can be if the software version installed on your phone can some how be an international version of your ROM, then only you can unlock the bootloader else none of your commands will work. now i am trying to flash this phone using an international ROM version if i succeed i will update. but according to my knowledge flashing other roms other than t mobile ones will definitely give errors in LGUP.

X_BlackBurn_X said:
NEW UPDATE:
my lg v20 now on software h91810p is actually a T MOBILE version. and when i researched more about it i found out T MOBILE deliberately locks the boot loader of many devices and its unlockable.
possible work around can be if the software version installed on your phone can some how be an international version of your ROM, then only you can unlock the bootloader else none of your commands will work. now i am trying to flash this phone using an international ROM version if i succeed i will update. but according to my knowledge flashing other roms other than t mobile ones will definitely give errors in LGUP.
Click to expand...
Click to collapse
Do not flash another model's firmware onto the H918! Doing so will permanently brick your phone. The H918 in particular is incompatible with all other variants' software. Also, flashing H918 firmware onto any other model will also brick that phone.

C D said:
Do not flash another model's firmware onto the H918! Doing so will permanently brick your phone. The H918 in particular is incompatible with all other variants' software. Also, flashing H918 firmware onto any other model will also brick that phone.
Click to expand...
Click to collapse
hello
thanks for the reply.
i know we cannot flash any other phones firmware on to this model.
i was thinking of flashing specifically lg v20 h91810p international stock firmware, one is t mobile and one is international stock rom of same model.
cause t mobile is not allowing me to unlock the bootloader but an international stock rom will.
i have seen people doing on t mobile on youtube videos i dont know how they are doing it.
my problem is :
" as in message sent to various senior on this topic"
LG V20 H91810P, T MOBILE BOOTLOADER CANNOT BE UNLOCKED
HELLO
can you please help me out on a quest to unlock my bootloader of lg v20 h91810p. i have downgraded from h91820h to h91810p and still all the adb commands fail to make my phone go in to fastboot mode. i just cannot enter in fastboot mode,
adb devices shows my device
|but fastboot devices in bootloader mode doesnot show my device at all.
updated all the drivers used multiple pcs usb ports but no luck at all.,
what am i possibly doing wrong can you please help me out? i will be thankful to you.
on a side note i think t mobile has lockedd my bootloader so that i canoot unlock it,
regards

X_BlackBurn_X said:
hello
thanks for the reply.
i know we cannot flash any other phones firmware on to this model.
i was thinking of flashing specifically lg v20 h91810p international stock firmware, one is t mobile and one is international stock rom of same model.
cause t mobile is not allowing me to unlock the bootloader but an international stock rom will.
i have seen people doing on t mobile on youtube videos i dont know how they are doing it.
my problem is :
" as in message sent to various senior on this topic"
LG V20 H91810P, T MOBILE BOOTLOADER CANNOT BE UNLOCKED
HELLO
can you please help me out on a quest to unlock my bootloader of lg v20 h91810p. i have downgraded from h91820h to h91810p and still all the adb commands fail to make my phone go in to fastboot mode. i just cannot enter in fastboot mode,
adb devices shows my device
|but fastboot devices in bootloader mode doesnot show my device at all.
updated all the drivers used multiple pcs usb ports but no luck at all.,
what am i possibly doing wrong can you please help me out? i will be thankful to you.
on a side note i think t mobile has lockedd my bootloader so that i canoot unlock it,
regards
Click to expand...
Click to collapse
Did you make the Linux USB boot stick
Are you following the guide at all?
PART 3: CREATING A BOOTABLE LINUX USB USING FWUL
DOWNLOAD FWUL_v2.7_x86_64_15GB.zip FROM THE LINK BELOW AND EXTRACT THE IMAGE FILE SOMEWHERE IN YOUR PC.
https://androidfilehost.com/?w=files&flid=214529
DOWNLOAD RUFUS FROM BELOW AND INSTALL
https://rufus.akeo.ie/
INSERT A PEN DRIVE IN YOUR PC AND RUN RUFUS.
INSIDE RUFUS SELECT THE IMAGE FILE AND SELECT START (AFTER SELECTING START SELECT DD MODE IN THE DIALOGUE BOX) TO CREATE A BOOTABLE PEN DRIVE (WARNING: THIS WOULD FORMAT YOUR PEN DRIVE)
NOW YOU SHOULD BOOT YOUR PC FROM THE BOOTABLE USB STICK WHICH YOU HAVE JUST CREATED
THIS WOULD MAKE YOUR PC RUN LINUX OS
TYPE PASSWORD AS linux AND ENTER
Sent from my HD1907 using Tapatalk

clsA said:
Did you make the Linux USB boot stick
Are you following the guide at all?
PART 3: CREATING A BOOTABLE LINUX USB USING FWUL
DOWNLOAD FWUL_v2.7_x86_64_15GB.zip FROM THE LINK BELOW AND EXTRACT THE IMAGE FILE SOMEWHERE IN YOUR PC.
https://androidfilehost.com/?w=files&flid=214529
DOWNLOAD RUFUS FROM BELOW AND INSTALL
https://rufus.akeo.ie/
INSERT A PEN DRIVE IN YOUR PC AND RUN RUFUS.
INSIDE RUFUS SELECT THE IMAGE FILE AND SELECT START (AFTER SELECTING START SELECT DD MODE IN THE DIALOGUE BOX) TO CREATE A BOOTABLE PEN DRIVE (WARNING: THIS WOULD FORMAT YOUR PEN DRIVE)
NOW YOU SHOULD BOOT YOUR PC FROM THE BOOTABLE USB STICK WHICH YOU HAVE JUST CREATED
THIS WOULD MAKE YOUR PC RUN LINUX OS
TYPE PASSWORD AS linux AND ENTER
Sent from my HD1907 using Tapatalk
Click to expand...
Click to collapse
thanks again for the showing me the right direction. i was talking about unlocking the bootloader in step 1.
i will go through your links and try to study this.
just one more question.
does this method unlocks the bootloader ?
if yes please reply yes i will be thankful to you.
i will follow this step now.
regards

X_BlackBurn_X said:
hello clsA
"
D:\fastboot>adb devices
List of devices attached
LGUS99740047103 device
D:\fastboot>adb reboot bootloader
D:\fastboot>fastboot oem device-id
after this it only says waitng for device"
now i am on h91810p as i was instructed. can you please help.
its all happening the same way it was happening when was on h91820h.
fastboot devices cannot be found.
once it reboots in bootloader then it should detect a fastboot device but it doesnot and adb is also lost there.
kindly help.
Click to expand...
Click to collapse
Why does adb show your device as a 997 which is the Sprint variant
Sent from my LG-H910 using XDA Labs