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I need to lock my bootloader to do an exchange at T-Mobile. I have 20R stock flashed, but it still says custom bootloader upon boot, how do I relock it safely?
I read that "fastboot oem lock" will work, but will brick it if I don't do it perfectly. Any advice on what to do?
TechGuruGJ said:
I need to lock my bootloader to do an exchange at T-Mobile. I have 20R stock flashed, but it still says custom bootloader upon boot, how do I relock it safely?
I read that "fastboot oem lock" will work, but will brick it if I don't do it perfectly. Any advice on what to do?
Click to expand...
Click to collapse
ive done it .. it works. it will build dalvik once it reboots.
I was able to Lock the bootloader.
1. I connected the phone to my PC
2. Powered on the Phone (it took a few tried of pulling the battery and powering on)
3. Check the box for OEM Unlock in Dev. Option
4. Use Minimal ADB and Fastboot and type in
Quote:
adb devicecs
- you should see the phone listed as one of the devices in the command line window
Quote:
adb reboot bootloader
- phone should reboot and you shouold see 3 lines of text on top
Quote:
fastboot oem lock
- nothing will happen on the phone, but on in the commandline it should say that it is done
Quote:
fastboot reboot
Phone reboots and the boot screen does not show the unlocked bootloader message anymore
I'm terribly sorry if bumping is not ok.
Thought it wasn't worth making a new thread, since my post is about the one above.
Has anybody actually tried these steps above? (Since every other thread mentioning this says it's a one-way only thing..)
Does locking the bootloader means also loosing the custom recovery? (I'd expect that, but asking to be sure)
Does it return the phone to it's original state? (ie. before one unlocked the bootloader, or there are some differences?)
Does it also means I would be able to get official OTA updates and so on? (since with a custom recovery, that's not possible)
Thanks in advance.
Yes, it does work. I did it, worked perfectly. Yes it does return your device to it's original state. Just make sure the stock ROM is flashed and all should be well. I didn't try, but I see no reason why it wouldn't let you get OTA updates from T-Mobile. Let me know if you need help.
Nadeox1 said:
I'm terribly sorry if bumping is not ok.
Thought it wasn't worth making a new thread, since my post is about the one above.
Has anybody actually tried these steps above? (Since every other thread mentioning this says it's a one-way only thing..)
Does locking the bootloader means also loosing the custom recovery? (I'd expect that, but asking to be sure)
Does it return the phone to it's original state? (ie. before one unlocked the bootloader, or there are some differences?)
Does it also means I would be able to get official OTA updates and so on? (since with a custom recovery, that's not possible)
Thanks in advance.
Click to expand...
Click to collapse
ive said ive done it. on the above instructions you dont beleive.??
i think you loose the twrp phone doesnt show unlocked bootloader message did not check recovery but it must revert t stock one.. not sure about OTA since am not in tmobile network.
you dont need OTA. you can always download KDZ and flash it with LGUP.
and stay uptodate.
raptorddd said:
ive said ive done it. on the above instructions you dont beleive.??
i think you loose the twrp phone doesnt show unlocked bootloader message did not check recovery but it must revert t stock one.. not sure about OTA since am not in tmobile network.
you dont need OTA. you can always download KDZ and flash it with LGUP.
and stay uptodate.
Click to expand...
Click to collapse
Thanks both for replying.
And no @raptorddd , I did not mean that.
Your post is the only mentioning that locking the bootloader is possible, while all the other similar threads have ony people saying otherwise / it's not possible. I guess a slightly doubt is legit to have, don't take it wrongly
raptorddd said:
ive done it .. it works. it will build dalvik once it reboots.
I was able to Lock the bootloader.
1. I connected the phone to my PC
2. Powered on the Phone (it took a few tried of pulling the battery and powering on)
3. Check the box for OEM Unlock in Dev. Option
4. Use Minimal ADB and Fastboot and type in
Quote:
adb devicecs
- you should see the phone listed as one of the devices in the command line window
Quote:
adb reboot bootloader
- phone should reboot and you shouold see 3 lines of text on top
Quote:
fastboot oem lock
- nothing will happen on the phone, but on in the commandline it should say that it is done
Quote:
fastboot reboot
Phone reboots and the boot screen does not show the unlocked bootloader message anymore
Click to expand...
Click to collapse
I have follow this instructions and now it giving me and error. Any fix??
WARMANH811 said:
I have follow this instructions and now it giving me and error. Any fix??
Click to expand...
Click to collapse
What error?
TechGuruGJ said:
What error?
Click to expand...
Click to collapse
Secure booting Error!
Error code: 1003
MODIFIED ! !
WARMANH811 said:
Secure booting Error!
Error code: 1003
MODIFIED ! !
Click to expand...
Click to collapse
are you sure you have h811.? i did not get that error ive tried this twice..
i remeber getting an security boot error on LG G2 i fix by flashing firmware .. so maybe KDZ could help..
if not am not sure then search for that error and find out how to fix.
raptorddd said:
ive done it .. it works. it will build dalvik once it reboots.
I was able to Lock the bootloader.
1. I connected the phone to my PC
2. Powered on the Phone (it took a few tried of pulling the battery and powering on)
3. Check the box for OEM Unlock in Dev. Option
4. Use Minimal ADB and Fastboot and type in
Quote:
adb devicecs
- you should see the phone listed as one of the devices in the command line window
Quote:
adb reboot bootloader
- phone should reboot and you shouold see 3 lines of text on top
Quote:
fastboot oem lock
- nothing will happen on the phone, but on in the commandline it should say that it is done
Quote:
fastboot reboot
Phone reboots and the boot screen does not show the unlocked bootloader message anymore
Click to expand...
Click to collapse
My H811 T-mobile phone needs service. It has original 20v software version. It is unlocked with TWRP and rooted. Can I use this method? Do I first have to downgrade software to some other version? Will this method also take out TWRP and root or do I still have to take them out before doing this? How? Please help.
joecandle said:
My H811 T-mobile phone needs service. It has original 20v software version. It is unlocked with TWRP and rooted. Can I use this method? Do I first have to downgrade software to some other version? Will this method also take out TWRP and root or do I still have to take them out before doing this? How? Please help.
Click to expand...
Click to collapse
no need to downgrade. to remove root and any trace if phone works. is to use KDZ then once it boots into system do the lock procedure. so it locks and the small white letter are removed. this way its like stock rom and recovery and the above commmands will make bootloader locked. and sent to repair. if bootloops try the freezing method.
Used on an LG Aristo that has Cyanogen and it worked
raptorddd said:
ive said ive done it. on the above instructions you dont beleive.??
i think you loose the twrp phone doesnt show unlocked bootloader message did not check recovery but it must revert t stock one.. not sure about OTA since am not in tmobile network.
you dont need OTA. you can always download KDZ and flash it with LGUP.
and stay uptodate.
Click to expand...
Click to collapse
This was the only one i found that didnt brick my phone and trust me ive bricked and unbricked this phone many times
When you use the fastboot command to lock back your bootloader, the phone doesn't revert automatically to the stock recovery and actually that is partly the reason why it bricks and other main reason is that changes made to bootloader to obtain root brick the phone. before you relock bootloader, if you have SuperSU (in-app menu option) or Magisk (uninstall zip file), use their respective methods to unroot the phone, then use twrp to flash .image file of stock recovery to recovery partition then use the fastboot command to lock the bootloader. Even then it may or may not work because if whatever method the phone uses to check the integrity of bootloader and/or recovery, such as md5, if it doesn't match, the phone will still brick. Since all your data on phone will be erased regardless as soon as you lock the bootloader, i personally just fastboot lock the bootloader, remove battery to power down, use the volume up and plug usb cable in from pc to put phone in download mode and just use LGUP (uppercut) if have kdz file already, which i do, i just let LG Bridge download the file, find it in programs folder and copy it to another location before LG Bridge deletes it --OR-- just use error recovery option in Software Update tab in LG Bridge as both LGUP and LG Bridge will detect the phone in download mode even if it is bricked.
By the way, I have used both methods above dozens of times without any issues, someone above who mentioned phone boot-looping because of locking the bootloader, it is boot-looping not because of hardware flaw which was widespread in LG G3 but a software issue (phone boots up, doesn't find the software configuration it is looking for and just restarts) and they are not the same issues, no need to freeze the phone, won't help.
the method works, but no OTA from T-Mobile. "verification problem".
When I try to "adb reboot bootloader" I get "security error".
If I try reboot recovery, TWRP is definitely not there.
Just want to update from20Q to 20X.
Any help would be appreciated.
metropical said:
the method works, but no OTA from T-Mobile. "verification problem".
When I try to "adb reboot bootloader" I get "security error".
If I try reboot recovery, TWRP is definitely not there.
Just want to update from20Q to 20X.
Any help would be appreciated.
Click to expand...
Click to collapse
The above points to you not giving permission possibly because either you missed the permission pop-up or selected option that didn't allow permission.
Can anyone help me?
When i unlock bootloader on my lg velvet 4g the fingerprint stop working so i want to relock. But when i put this on cmd "adb reboot bootloader" it only restarts my phone. Doesnt shows me the bootloader menu it only restarts normaly
Lukasz23 said:
Can anyone help me?
When i unlock bootloader on my lg velvet 4g the fingerprint stop working so i want to relock. But when i put this on cmd "adb reboot bootloader" it only restarts my phone. Doesnt shows me the bootloader menu it only restarts normaly
Click to expand...
Click to collapse
managed to solve?
On Saturday appeared an OTA update to do on my mi A2 but after installed and restarting it died. It does not enter recovery mode and the screen is always on with android one bootscreen logo.
PS: I never flash the phone and i never change anyting in the system of the phone.
The only response that i have in the phone is enter in it Fastboot menu. I read some threads and untill now i cant fix my phone.
I will try to explain what i do:
I've tried using this tool https://forum.xda-developers.com/mi-a2/how-to/mi-a2-toolkit-unlock-bootloader-root-t3834585.
I try option 3 (Unbrick/Revert to Stock/Force update and the program tell me to unlock the bootloader.
When i tried to unlock bootloader by option 1 and then 1, 2 and 3 ( Unlock flashing critical, unlock OEM , unlock flashing ) the programs says: Failed Unlock is not allowed.
Then i try the response 9 to this thread https://forum.xda-developers.com/mi-a2/help/impossible-flashing-xiaomi-mi-a2-t3837565 to try unlocked the bootloader
But i have the same response ( Flashing Unlock is not allowed )
I read and i try but i cant unbrick my phone, someone can help?? Thanks
We are in the same boat buddy, the same thing happened to the phone of my wife.
It *sounds* like the update failed, and normally that would mean it would switch the slot back to the one that was working and boot that.
But you've tried a bunch of options from some tool, I've no idea what it did, as the tool doesn't tell you what commands it's doing.
I'd suggest to go to fastboot and see if you can tell which slot is active, then switch it to the other slot, then do fastboot reboot and cross your fingers
I have the same problem (for other reasons, but exactly the same problem). You can also try "fastboot oem edl", but it did not work for me, so I suppose you have little chance for it to work.
I have been searching and it looks like there are some "deep flash cables" that can make the phone enter edl mode to flash it using mi flash tool. Maybe these could work for us. There is apparently other way to enter edl mode, but it requires opening the phone (that I do not want to do) to short two test points.
I cant enter revorymode only fastboot mode. But when in fastbootmode my connected pc cant even find the phone. Im going to return the phone.
I have the same problem, I have this edl cable but so far no luck.
Do not realy k Ow how to use.
Are you sure it was the OTA update that bricked your phone? That Treble system isn't just there for the kicks, its there to prevent serious issues like these.
I'm stucked on fastboot, I don't want to open my phone. Could anyone help us? I already tried a lot of things, my computer doesn't recognize my mobile when is on fastboot mode. I already tried to install a lot of drivers or try to use differents adbs.
Hey guys, i have MI A2 cellphone, and after auto update programmed to three hours the smartphone show "AndroidONE" logo and then shutdown, i tried "Fastboot oem unlock", but it is my output:
PHP:
C:\Users\Lucas Daniel>fastboot oem unlock
FAILED (remote: 'Flashing Unlock is not allowed
')
Finished. Total time: 0.000s
. I'm desperate, I do not know what to try anymore, I believe I do not have unlock OEM activated, someone can help me?
Sorry for bad english, i'm from brazilian.
@LukeSkyPTBR
It's a well-known issue. One update was revoked as soon as Xiaomi has found out about phones bricking once it's installed. There's no way you can fix it by yourself except if you have ordered your phone from China (and so no warranty you have) and have experience in disassembling phones. There's a thing called test-point, do some research if you are self-assured in that area. Otherwise let your authorized service center make everything for you. It is a warranty case, either way.
sas.mar said:
@LukeSkyPTBR
It's a well-known issue. One update was revoked as soon as Xiaomi has found out about phones bricking once it's installed. There's no way you can fix it by yourself except if you have ordered your phone from China (and so no warranty you have) and have experience in disassembling phones. There's a thing called test-point, do some research if you are self-assured in that area. Otherwise let your authorized service center make everything for you. It is a warranty case, either way.
Click to expand...
Click to collapse
Thanks, looks that, unfortunately, my unique solution is test-point for activate EBL Mode... I will leave the topic open for the case of i get other solutions... after 3 days, if not get, i will close and the unique solution will really test-point.
Try rebooting it a couple of times and see if it boots. Or plug it to a charger and try booting it once it starts to charge successfully. If all fails, flashing via EDL might be your only option.
Try rebooting more than couple of time. Phone is supposed to switch to the other slot of A/B where original ROM (before update) resides. When it finally boots, get developer rights, switch on ADB Debugging and OEM unlock, thus next time update soft-bricks your phone you'll be able to unlock (or even better unlock immediately after successful boot not to loose your data in future).
Isnt Fastboot OEM Unlock command deprecated ? Shouldn't you use the unlock / unlock critical command ?
Tianhe said:
Isnt Fastboot OEM Unlock command deprecated ? Shouldn't you use the unlock / unlock critical command ?
Click to expand...
Click to collapse
What is it command?
Aerobatic said:
Try rebooting more than couple of time. Phone is supposed to switch to the other slot of A/B where original ROM (before update) resides. When it finally boots, get developer rights, switch on ADB Debugging and OEM unlock, thus next time update soft-bricks your phone you'll be able to unlock (or even better unlock immediately after successful boot not to loose your data in future).
Click to expand...
Click to collapse
How can I do it? I leave the phone in the charger for a long time? Or do you need the power button for a long time?
I tried to press the power button for 2 minutes and nothing happened.
When i leave the smartphone on the charge, after 50 minutes, show for me 100% percent, so, i pressed power button and the screen stayed lock in "AndroidONE", nothing happened, until try again press power button.
The problem original comebacked to me
LukeSkyPTBR said:
What is it command?
Click to expand...
Click to collapse
I tried, the same ploblem happenned... don't work, unfortunely... :/
LukeSkyPTBR said:
What is it command?
Click to expand...
Click to collapse
fastboot flashing unlock
fastboot flashing unlock_critical
Can't you just enter fastboot mode by holding power and vol- keys with phone connected to a PC?
(Or power and vol+, can't remember)
Phil_Smith said:
fastboot flashing unlock
fastboot flashing unlock_critical
Can't you just enter fastboot mode by holding power and vol- keys with phone connected to a PC?
(Or power and vol+, can't remember)
Click to expand...
Click to collapse
I can enter fastboot mode, but this is not enough to do run commands up. I would need unlock bootloader(OEM).
LukeSkyPTBR said:
I can enter fastboot mode, but this is not enough to do run commands up. I would need unlock bootloader(OEM).
Click to expand...
Click to collapse
If you can enter fastboot then you can go to EDL mode by typing 'fastboot reboot edl' and then use QPST to flash the latest stock rom.
LukeSkyPTBR said:
I can enter fastboot mode, but this is not enough to do run commands up. I would need unlock bootloader(OEM).
Click to expand...
Click to collapse
Do as tabun1994 said.
This will hopefully get the system up again.
The commands I wrote would unlock the bootloader. What else could I have meant?
If you succeeded with tabun's method, then you probably would only need to enable "USB debugging" and "OEM unlocking" in the ROM's developer options (which you'll enable by hitting "build number" in settings like 10 times or so).
Then you would connect the device and accept the 'trust this device' warning.
After booting to fastboot now, the commands I wrote should work and unlock the bootloader (if you even want that when your system is running again).
tabun1994 said:
If you can enter fastboot then you can go to EDL mode by typing 'fastboot reboot edl' and then use QPST to flash the latest stock rom.
Click to expand...
Click to collapse
This command needs OEM Unlock :/
this is my output: fastboot: usage: unknown reboot target edl
The test point method is actually easy , you have to dissasemble the display , easy procedure , remove the battery and short the two test points with tweezerz or something ,and in the meantime you plug the usb cable into the computer. It should install the Qusb_Hub drivers , and with miFlash you should be able to reflash the firmware . I bought a phone that was in this state and fixed it using these steps.
No more solutions, I will do the test point method, thanks to everyone who tried to help otherwise.
LukeSkyPTBR said:
This command needs OEM Unlock :/
this is my output: fastboot: usage: unknown reboot target edl
Click to expand...
Click to collapse
No it doesn't, i have tried this method on locked bootloader, go to this link - https://forum.xda-developers.com/an...e-how-to-reboot-to-edl-fastboot-t3394292/amp/
And download the fastboot_edl.7z , your phone will be in edl mode, I think you don't have the proper platform files which has caused the problem.
tabun1994 said:
No it doesn't, i have tried this method on locked bootloader, go to this link - https://forum.xda-developers.com/an...e-how-to-reboot-to-edl-fastboot-t3394292/amp/
And download the fastboot_edl.7z , your phone will be in edl mode, I think you don't have the proper platform files which has caused the problem.
Click to expand...
Click to collapse
Okays, thanks for this solution, i will get the smartphone tomorrow, if the technical assistance not resolved my problem, i will try. Thanks very much!
LukeSkyPTBR said:
Okays, thanks for this solution, i will get the smartphone tomorrow, if the technical assistance not resolved my problem, i will try. Thanks very much!
Click to expand...
Click to collapse
I execute bat archive but nothing happens in Mi A2 .-
tabun1994 said:
No it doesn't, i have tried this method on locked bootloader, go to this link - https://forum.xda-developers.com/an...e-how-to-reboot-to-edl-fastboot-t3394292/amp/
And download the fastboot_edl.7z , your phone will be in edl mode, I think you don't have the proper platform files which has caused the problem.
Click to expand...
Click to collapse
What is your smartphone?
Can anyone help me how to unlock the bootloader via fastboot since I cannot get in the software as I have a bootloop. I greatly appreciate it as I have been figuring out this for the past 5 hours. Thank you.
Hello Guys, I messed up as I did not unlock bootloader first before flashing it from fastboot. Now I have a bootloop. Can anyone help me how to reflash CN. I have a lock bootloader. Thank you very much.
Anybody?? Please help.
Any other phone if you don't flick oem unlock first in developer ootions it's a hardbrick. The Asus unlock tool apk does this. Did you install that first and unlock first? Hope you can recover
Sent from my ASUS_Z01QD using Tapatalk
DanXbix said:
Any other phone if you don't flick oem unlock first in developer ootions it's a hardbrick. The Asus unlock tool apk does this. Did you install that first and unlock first? Hope you can recover
Sent from my ASUS_Z01QD using Tapatalk
Click to expand...
Click to collapse
I totally forgot to unlock first from the Asus Apk. I am hoping I can Unbrick it. Thank you.
tzdu25 said:
I totally forgot to unlock first from the Asus Apk. I am hoping I can Unbrick it. Thank you.
Click to expand...
Click to collapse
You're FUBAR for now, nobody has figured out a way to flash the phone without an unlocked bootloader. Just use it as a brick until someone finds out QDL9008 or other ways to flash it.
Your's ROG 2 can be boot into recovery mode?
If you can -- "adb sideload software.zip"
nenebear said:
Your's ROG 2 can be boot into recovery mode?
If you can -- "adb sideload software.zip"
Click to expand...
Click to collapse
you can't with locked bootlader
hashcheck said:
you can't with locked bootlader
Click to expand...
Click to collapse
Now. With rog phone 2, although unlock booloader, you still cant flash zip file via recovey mode
That's correct, I tried ADB sideloading zip files but getting a fail message.
tzdu25 said:
That's correct, I tried ADB sideloading zip files but getting a fail message.
Click to expand...
Click to collapse
Yes. Is lock
Your only option is to go to ASUS service center in your area and ask them to repair it. If they accept to service it they will of course charge you for it which is better than having a bricked phone. Other than that your only option is to send the phone back to China there you can claim that the phone got a bootloop and since you didn't unlock the bootloader you are still covered by warranty meaning you will only pay shipping fees.
Thank you Rashad83. I just sent it to Asus Service Center with a fee.
Did you guys changing the Boot Slot?
Check your current boot slot by hitting -
fastboot oem device-info
Then change the slot to "B" if you're currently in "A"
Slot change command -
fastboot set_active_b
tzdu25 said:
Thank you Rashad83. I just sent it to Asus Service Center with a fee.
Click to expand...
Click to collapse
Now, i can fixed
Guys, Please obtain an ASUS Raw firmware to recover your devices. Do not fall for tricks by various users around which asks to pay for them.
Just use Google and find yourself the correct RAW firmware for your model.
tzdu25 said:
Can anyone help me how to unlock the bootloader via fastboot since I cannot get in the software as I have a bootloop. I greatly appreciate it as I have been figuring out this for the past 5 hours. Thank you.
Click to expand...
Click to collapse
Check Here
Hi, I've managed to unbrick my ROG Phone II Tencent Edition 8/128 with a locked bootloader having "slot _a" error. Link to other thread: https://forum.xda-developers.com/rog-phone-2/how-to/repair-rog2-phone-edl-modeofficial-t4012175
My equipment for flashing, for sure you already have ADB installed in your computer, my computer is an x64 Intel Windows 10 laptop, I used USB 2.0 not USB 3.0
Credit to @johnny886 for the sharing the tool,
"If your phone can only enter EDL mode (9008 mode)
this firmware is glad to help you. It can be flashed in through
the QPST tool, or it can be flashed in through the Xiaomi miflash tool.
To use the QPST tool, you must change the EMMC to UFS. No matter which tool you use, -(I personally did not use this, I just downloaded the file and followed grewookie's instruction below)
you must restore the factory settings after the phone is turned on, otherwise the storage
of the phone will recognize the error! !! !!
Factory settings must be restored after booting! !! !!
The firmware is made through the official package UL-ASUS_I001_1-ASUS-16.0631.1910.35-1.1.207-user.zip
without any modification, Suitable for repairing phones that can only enter edl mode(9008 mode).
File Downlaod link: https://drive.google.com/open?id=1Pk...Sf6cDq7SuJiBBu"
Credits to @greywookiee for the super clear instruction:
"Here's some instructions I put together that would have helped save me a lot of time. Please correct anything I missed:
After you have downloaded the zip file, here are the step-by-step instructions:
1. Extract the zipped folder wherever you want on your PC.
2. Open a CMD window.
3. cd /d <whatever path it is to the "\ASUS_ROG2_ZS660KL_QPST_Firmware\images" folder> e.g., "cd /d D:\RogPhoneII\ASUS_ROG2_ZS660KL_QPST_Firmware\imag es"
4. Make sure your PC is connected to the side port of your phone and the phone is in fastboot mode (Volume UP button + Power button).
5. Check and make sure your PC is connected properly by entering "fastboot devices" in the command window. You should see the ID of your device.
6. Then enter "fastboot oem enter-dload" in the command window. This will put the phone in emergency download mode (EDL). My phone went all black.
7. Open "\ASUS_ROG2_ZS660KL_QPST_Firmware\MiFlash2018-5-28-0" folder. Launch "XiaoMiFlash.exe".
8. Click "refresh". You should see a device in the list.
9. Click "select" and navigate to the "\ASUS_ROG2_ZS660KL_QPST_Firmware\images" folder.
10. Click "flash". Wait until it says "success".
11. After it's done, you'll hold down the UP button, Down button, and Power button on the phone at the same time until it shuts down.
12. Hold Up button and Power button at same to boot into fastboot mode again. Select Recovery mode by using the Up/Down buttons on the phone. Press the Power button to select.
13. Select "wipe data" from the drop down list. Go down the list of "no" until you get to the "yes" and press the Power button.
14. Select "reboot now".
15. Done."
Rashad83 said:
Your only option is to go to ASUS service center in your area and ask them to repair it. If they accept to service it they will of course charge you for it which is better than having a bricked phone. Other than that your only option is to send the phone back to China there you can claim that the phone got a bootloop and since you didn't unlock the bootloader you are still covered by warranty meaning you will only pay shipping fees.
Click to expand...
Click to collapse
How to send a phone to China for a warranty contacts
Methods and as many details as possible
So I could send mine from Canada as well
I am in warranty but I am not in China.
---------- Post added at 02:16 PM ---------- Previous post was at 02:15 PM ----------
dungnghien said:
Now, i can fixed
Click to expand...
Click to collapse
Can you please help me warranty claim this phone in China. Please.
I have an expensive brick laying around.
(french) hello
I could not start in edl mode with the xda instructions but I found a videos
phone on android, connected to the computer by usb. you keep pressing the power button and the volume down button.
when the screen goes black immediately you strafe the volume + button for 2 sec.
the secret is the windows song if the phone is on. when you hear windows song strafe the volume +. i know I did it with my phone off and my phone on quite a few times
normally your computer will recognize the phone in the correct mode. if there is a problem do not forget to install these drivers and restart the computer as it will stay in edl mode and will be well supported.
QDLoader HS-USB Driver_64bit_Setup
MediaFire is a simple to use free service that lets you put all your photos, documents, music, and video in a single place so you can access them anywhere and share them everywhere.
www.mediafire.com
that's funny visibbly before you unlock or reflash the original bootloader the phone don't have fastboot mode with me. but fastboot don't work well in windows. it work erfectly on linux ubuntu with me at exemple.
thanks for your attention
yeah, it is very easy
So this is how you go into fastboot ?
I have the V405 EBW & I am unable to go to fastboot to get the device ID.
Doush_504 said:
So this is how you go into fastboot ?
I have the V405 EBW & I am unable to go to fastboot to get the device ID.
Click to expand...
Click to collapse
no no we should not confuse.
there is download mode in originale lg phone for flash stock roms
there is "edl mode" for unlock bootloader
there is fastboot mode when you unlock the bootloader with this screen.
a tips. root first your phone. 2 backup your firmware. 3 flash twrp. i had problem because i don't do this. there is stock firmware already rooted. its easily.
bsteph27 said:
no no we should not confuse.
there is download mode in originale lg phone for flash stock roms
there is "edl mode" for unlock bootloader
there is fastboot mode when you unlock the bootloader with this screen.
a tips. root first your phone. 2 backup your firmware. 3 flash twrp. i had problem because i don't do this. there is stock firmware already rooted. its easily.
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Click to collapse
Unfortunately, I am unable to root because I am unable to unlock the bootloader (because I can't go to fastboot to get Device ID & send it to LG)
Doush_504 said:
Unfortunately, I am unable to root because I am unable to unlock the bootloader (because I can't go to fastboot to get Device ID & send it to LG)
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Click to collapse
But you can get to fastboot, just not the way you read on the internet.
The device doesn't have fastboot available, until, you put it in edl mode and use qfil to flash the 'engineering' abl. That's what gives you fastboot.
You could, at that point, use fastboot to get the info for unlock.bin. But why? because at that point you can just type 'fastboot oem unlock', and it's unlocked.
AsItLies said:
But you can get to fastboot, just not the way you read on the internet.
The device doesn't have fastboot available, until, you put it in edl mode and use qfil to flash the 'engineering' abl. That's what gives you fastboot.
You could, at that point, use fastboot to get the info for unlock.bin. But why? because at that point you can just type 'fastboot oem unlock', and it's unlocked.
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Click to collapse
beware to put your phone in android oreo before the unlock...... i forget this detail. and i try to unbrick my phone with testpoint. maybe i do a howto if i succes to fix my phone.
AsItLies said:
But you can get to fastboot, just not the way you read on the internet.
The device doesn't have fastboot available, until, you put it in edl mode and use qfil to flash the 'engineering' abl. That's what gives you fastboot.
You could, at that point, use fastboot to get the info for unlock.bin. But why? because at that point you can just type 'fastboot oem unlock', and it's unlocked.
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Click to collapse
Oh OK
I'll have to read more about that.
Thank you
bsteph27 said:
beware to put your phone in android oreo before the unlock...... i forget this detail. and i try to unbrick my phone with testpoint. maybe i do a howto if i succes to fix my phone.
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Click to collapse
Unlock only works with Oreo ??
I have Pie
How do I downgrade without root ?
Is it possible ?
If I can flash a firmware without root
I'd be more than happy to flash a custom rom which has LG's apps instead of Google annoying ones.
Doush_504 said:
Unlock only works with Oreo ??
I have Pie
How do I downgrade without root ?
Is it possible ?
Click to expand...
Click to collapse
you are like me your phone is "bricked". your phone don't have download mode, fastboot mode. maybe you have
edl mode 9008. but often you have to open your phone for put it in edl mode.​wait my howto i hope fix mine today or tomorow and i wil do an howto to unbrick lg v40. is not very hard to solve it but it must a howto.