Unlock Galaxy a40 bootloader - Samsung Galaxy A40 Questions & Answers

Hello, I would like to unlock the bootloader of my a40 but the volume button (-) doesn't work well anymore, so I can't enter the unlock mode. Is there any other way to enter this mode or to unlock it ? (I can enter in download mode)
Thank you.

Sorry, no, get it repaired, well i dont think its possible, maybe some adb commands can work but idk

Mathimino said:
Hello, I would like to unlock the bootloader of my a40 but the volume button (-) doesn't work well anymore, so I can't enter the unlock mode. Is there any other way to enter this mode or to unlock it ? (I can enter in download mode)
Thank you.
Click to expand...
Click to collapse
Of course you can with adb tools, and your phone conected to computer with usb cable, and usb debugging activated in settings. Most of adb tools have reset to recovery, reset to bootloader, and more options, you can do the same mannually with adb console, included if you instal a terminal in your phone i think is possible to restart to bootloader.

Related

Phone bricked ?

Hi guys,
Today I tried to flash a stock rom but my phone won't boot in recovery,
After several trys, I runned the command Fastboot oem device-info and it says that my bootloader was locked,
Or I unlocked it as soon as I received my OPT and since one hour it won't stop rebooting in bootloader (after lunching the command fastbood oem unlock, it says "OKAY")
What do you guys think I can do ? Should I just pack it and send it to OnePlus ? Or there is a way to fix this problem ? All I can do is access to the Fastboot Mode but my Bootloader seems locked... :'(
Thanks for you help !
Nelio_FakeGeek said:
Hi guys,
Today I tried to flash a stock rom but my phone won't boot in recovery,
After several trys, I runned the command Fastboot oem device-info and it says that my bootloader was locked,
Or I unlocked it as soon as I received my OPT and since one hour it won't stop rebooting in bootloader (after lunching the command fastbood oem unlock, it says "OKAY")
What do you guys think I can do ? Should I just pack it and send it to OnePlus ? Or there is a way to fix this problem ? All I can do is access to the Fastboot Mode but my Bootloader seems locked... :'(
Thanks for you help !
Click to expand...
Click to collapse
Unbelievable,the same problem....anyone can help us?Plz
Nelio_FakeGeek said:
Hi guys,
Today I tried to flash a stock rom but my phone won't boot in recovery,
After several trys, I runned the command Fastboot oem device-info and it says that my bootloader was locked,
Or I unlocked it as soon as I received my OPT and since one hour it won't stop rebooting in bootloader (after lunching the command fastbood oem unlock, it says "OKAY")
What do you guys think I can do ? Should I just pack it and send it to OnePlus ? Or there is a way to fix this problem ? All I can do is access to the Fastboot Mode but my Bootloader seems locked... :'(
Thanks for you help !
Click to expand...
Click to collapse
Try this guide,worked for me.
http://forum.xda-developers.com/oneplus-2/general/oneplus-solution-hard-bricked-device-t3183449
fonz83.sa said:
Try this guide,worked for me.
http://forum.xda-developers.com/oneplus-2/general/oneplus-solution-hard-bricked-device-t3183449
Click to expand...
Click to collapse
Many thanks to you it worked !
How did you guys get your phone into this (QUALCOMM-HS USB Diagnostics 9006) mode in the device Manager? I only see "QHSUSB_BULK"... Bootloader locked and I won't get into the recovery mode. I only get bootloop.
moeblhaus said:
How did you guys get your phone into this (QUALCOMM-HS USB Diagnostics 9006) mode in the device Manager? I only see "QHSUSB_BULK"... Bootloader locked and I won't get into the recovery mode. I only get bootloop.
Click to expand...
Click to collapse
Hold the power key for 20 seconds to force turn off power. connect OPT to usb, hold volume+ and power until your PC finds a new hardware (if it doesn't work, try hold volume+ and volume- together.
It is step #2 in that guide.
moeblhaus said:
How did you guys get your phone into this (QUALCOMM-HS USB Diagnostics 9006) mode in the device Manager? I only see "QHSUSB_BULK"... Bootloader locked and I won't get into the recovery mode. I only get bootloop.
Click to expand...
Click to collapse
If you folow the guide here: http://forum.xda-developers.com/oneplus-2/general/oneplus-solution-hard-bricked-device-t3183449 after you instal the drivers the device will show ap as QUALCOMM-HS USB Diagnostics 9006!
moeblhaus said:
How did you guys get your phone into this (QUALCOMM-HS USB Diagnostics 9006) mode in the device Manager? I only see "QHSUSB_BULK"... Bootloader locked and I won't get into the recovery mode. I only get bootloop.
Click to expand...
Click to collapse
You have to random push Vol+ or/and Vol- to get a black screen instead of Fastboot screen during the bootloop.
Thank you guys! It finally worked. Like you said, I had to kind of randomly and really long push the + , - & power button!

Huawei P9 Lite stuck on bootloop, can't enter recovery mode

Hello, I'm new to xda, in fact I registered just to ask for help. My p9 lite got stuck on huawei logo, when i try to turn off the device it just reboots 2 times and then just stays on huawei logo. I can enter fastboot and rescue mode, but i have not enabled usb debugging and oem unlock on the device earlier. To be honest this is my first android device, in the past i used only windows phones, so you could say i'm completely new to this. Any suggestions on how to recover my phone or flash any rom into it? I'd be very glad if someone helped me find the solution to this problem. Not sure if i made a thread in the correct place, direct me if i'm mistaken
There are few different versions of P9 Lite, look at the back of the phone to the bottom to see the numbers beside VSN and let us know.
1) Also when the phone is turned off plug in the usb to a computer or charging adapter
2) Hold down volume up & power
3) Let go of the power button when you feel the buzz while still holding the volume up button
4) Download latest version & recovery.
5) Go to Settings>Developer Options>USB Debugging On
5B) If you don't see Developer Options in settings, then go to Settings>About Phone>Build Number & ( tap the Build Number untill it unlocks)
6) Update us on the status, hope it works out.
GloryNation said:
There are few different versions of P9 Lite, look at the back of the phone to the bottom to see the numbers beside VSN and let us know.
1) Also when the phone is turned off plug in the usb to a computer or charging adapter
2) Hold down volume up & power
3) Let go of the power button when you feel the buzz while still holding the volume up button
4) Download latest version & recovery.
5) Go to Settings>Developer Options>USB Debugging On
5B) If you don't see Developer Options in settings, then go to Settings>About Phone>Build Number & ( tap the Build Number untill it unlocks)
6) Update us on the status, hope it works out.
Click to expand...
Click to collapse
tried to enter recovery, still not work. can't go to developer options because phone is stuck on logo, can't power off. couldn't find any solution that works anywhere, been searching for more than 6 hours, still no use. phone model is VNS-L21 forgot to mention earlier
What exactly were you doing before this happened and does your computer recognize your phone when plugged in at all.
Try holding volume up & down together & plug phone in when it reboots on you, & report back with what you see. If anything at all.
GloryNation said:
What exactly were you doing before this happened and does your computer recognize your phone when plugged in at all.
Try holding volume up & down together & plug phone in when it reboots on you, & report back with what you see. If anything at all.
Click to expand...
Click to collapse
I tried to install nougat update, computer recognizes it only in fastboot. holding volume buttons haven't changed anything still no progress. the thing is i had installed nougat a moth or so ago and it worked fine, then rolled back to marshmallow and now this. i'm pretty sure i tried to install correct package, because it was the same i had installed earlier
Did you download a adb tool on your computer that have the 'fastboot.exe' file? If so open that folder,
Have the mouse curser hover in that folder, hold down shift & right click the mouse
Open command prompt
Connect phone as is in fastboot mode
Type adb devices & press enter
Type adb continue & press enter
Hi,
I have the same issue as ellanyx.
my phone can only be stucked while booting or if I connect my phone to a computer, I'm able to boot it in fastboot.
as ellanyx, I didn't enable usb-debug nor OEM unlock option...
so when I'm in fastboot, I type the command "fastboot oem unlock xxxxxx" (hopefully the different data needed are the correct ones mentioned on the box of the phone) I get this error message:
C:\Users\Dieu\Downloads\SRKToolHuawei-STABLE-V1.3-20160619>fastboot oem unlock xxxxx
...
FAILED (remote: Command not allowed)
finished. total time: 0.016s
and off course the other options like "fastboot flash recovery recovery.img "... doesn't work.
I can't use the adb commands neither.
when I type the commande, as mentioned above, "adb devices" or "adb continue", nothing works.
So I'm a bit desesperate
do you have any solution for this kind of issue?
thanks
Dude, so the last firmware on your phone was MM or N? If it was MM you should put stock firmware appropriate for your model in dload folder on SD card and put volume+volume-power, and thats it. If you stack on N,....then I dont know because dload method doesnt work with N, or maybe works if you can find stock firmware with recovery for N.
Regards
Unfortunately I can't update with the 3 button update otherwise it would indeed solvemy problem.
pyromana said:
Unfortunately I can't update with the 3 button update otherwise it would indeed solvemy problem.
Click to expand...
Click to collapse
Probably you didnt have correct Oeminfo for MM if dload method didnt work....Try to conect phone with Toolkit and follow procedure for flashing oeminfo and custombin, after that flash stock recovrry and b161 via dload metod. You will find it on forum here.
Regards
the procedure from SRK toolkit?
would it be possible to provide it? because I can't unlock the OEM and I didn't tick the USB debug think.
Maybe problem with the ps not phone so u can not connect with adb
Try with different pc you must have flash oem with fast boot without enable adb from phone if u in fastboot
I can only boot my phone in fastboot (vol- + power) and not in recovery (vol+ + power).
also when using the SRK toolkit, the first screen tells me to be sure that the usb debugging is enable, which I haven't done...
if I'm not mistaken, fastboot is to use the fastboot command and recovery the adb commands
the connection with fastboot works on my computer, the link is made. however when I type the command to unlock the OEM, I get an error stating that the command is not allowed.
when I use the SRK toolkit, with the different questions, he tries to connect the phone with adb and waiting.... waiting...
is there a command to reboot in recovery but from fastboot? in the otherway around it exists but it doesn't seem that from fastboot to recovery it exists.
thanks.
Alexxxx1 said:
Dude, so the last firmware on your phone was MM or N? If it was MM you should put stock firmware appropriate for your model in dload folder on SD card and put volume+volume-power, and thats it. If you stack on N,....then I dont know because dload method doesnt work with N, or maybe works if you can find stock firmware with recovery for N.
Regards
Click to expand...
Click to collapse
dload method works on N. I downgraded my phone from unofficial N update back to official MM update using this method yesterday. You just have to enable OEM at developer options on settings.
It looks like people can't be bothered to read the 1st post properly before they reply.
HE CAN NOT BOOT TO ANDROID SO HE CAN NOT ENABLE OEM OR ACTIVATE USB DEBUGGING!!!!
What he CAN do, is go into eRecovery and Fastboot.
With that in mind, I would suggest using the dload method through fastboot.
Also, make sure it is Huawei SRK Tools 2.0 that is used, as it actually asks if you are in debug mode or fastboot.
Note that there is a few bugs in SRK 2.0:
The TWRP recovery file has the wrong filename in the package, so it WILL fail unless you name it correctly.
Also, when trying to root, do NOT use the "P9 Lite" method as that WILL fail too. Use the "P9/P9 Plus" method.
I am trying to set up a complete guide that can restore the phone when it is stuck in fastboot, however I apparently went a step too far...
ellanyx said:
Hello, I'm new to xda, in fact I registered just to ask for help. My p9 lite got stuck on huawei logo, when i try to turn off the device it just reboots 2 times and then just stays on huawei logo. I can enter fastboot and rescue mode, but i have not enabled usb debugging and oem unlock on the device earlier. To be honest this is my first android device, in the past i used only windows phones, so you could say i'm completely new to this. Any suggestions on how to recover my phone or flash any rom into it? I'd be very glad if someone helped me find the solution to this problem. Not sure if i made a thread in the correct place, direct me if i'm mistaken[/QUOTE
Do you have TWRP recovery ?
---------- Post added at 09:55 AM ---------- Previous post was at 09:50 AM ----------
ellanyx said:
Hello, I'm new to xda, in fact I registered just to ask for help. My p9 lite got stuck on huawei logo, when i try to turn off the device it just reboots 2 times and then just stays on huawei logo. I can enter fastboot and rescue mode, but i have not enabled usb debugging and oem unlock on the device earlier. To be honest this is my first android device, in the past i used only windows phones, so you could say i'm completely new to this. Any suggestions on how to recover my phone or flash any rom into it? I'd be very glad if someone helped me find the solution to this problem. Not sure if i made a thread in the correct place, direct me if i'm mistaken
Click to expand...
Click to collapse
Boot into fastboot mode and flash a custom recovery by meticulus. Link : meticulus.co.vu
Then whenyou get stuck hold power and vol down button for 2 minutes the phone will reboot and then when it says that your device has been unlocked and cant be trusted then only press vol up key ( dont press power button then). The u get into huawei recovery. From that u should power off the phone. Now get a custom rom by meticulus into your device sd card ( Cyanogenmod 13 is recommended ). Then insert sd card in a powered off phone. Now press vol up and power key and flash gapps and custom rom and you are good to go.
Click to expand...
Click to collapse
So, MY question:
I have tried 4 times to get Nougat installed, but every time I got the SMALL package (1.25gb) which means it is not complete.
I decided to try ONE more time, but think I have made a serious mistake.
I was on B161 and tried to downgrade to B160 without upgrading to Nougat first.
This has caused my phone to be stuck at boot with the message "Your device is booting now..."
I can NOT get into eRecovery or fastboot no matter what I do.
If I just leave the phone, then it discharge very fast, but as soon as I plug it in, it starts up and gets stuck at the same screen again.
Does anyone have ANY idea about how I can get out of this problem?
UPDATE:
I have managed to boot to fastboot while connected to my pc.
The phone is unlocked but FRP is LOCKED, which means I can't flash anything.
I read about using Miracle Loader to remove the FRP lock, but it can't "see" my phone. Maybe I am doing it wrong?
SnowmanDK said:
So, MY question:
I have tried 4 times to get Nougat installed, but every time I got the SMALL package (1.25gb) which means it is not complete.
I decided to try ONE more time, but think I have made a serious mistake.
I was on B161 and tried to downgrade to B160 without upgrading to Nougat first.
This has caused my phone to be stuck at boot with the message "Your device is booting now..."
I can NOT get into eRecovery or fastboot no matter what I do.
If I just leave the phone, then it discharge very fast, but as soon as I plug it in, it starts up and gets stuck at the same screen again.
Does anyone have ANY idea about how I can get out of this problem?
UPDATE:
I have managed to boot to fastboot while connected to my pc.
The phone is unlocked but FRP is LOCKED, which means I can't flash anything.
I read about using Miracle Loader to remove the FRP lock, but it can't "see" my phone. Maybe I am doing it wrong?
Click to expand...
Click to collapse
Try to relock and then unlock the bootloader again. And make sure oem unlocking is enabled in dev options
Arsaam said:
Try to relock and then unlock the bootloader again. And make sure oem unlocking is enabled in dev options
Click to expand...
Click to collapse
Please read my previous post again
I can NOT boot normally. And as FRP is locked, then I can't relock or unlock the bootloader.
SnowmanDK said:
Please read my previous post again
I can NOT boot normally. And as FRP is locked, then I can't relock or unlock the bootloader.
Click to expand...
Click to collapse
Go to fast boot mode and from their try to flash meticulus recovery.
You can also try the adb method as well.
Visit meticulus.co.vu

LG V35 - Can anyone get into the bootloader?

Cannot find a way to enter the bootloader. Volume down + power doesn't do anything. Same with adb reboot bootloader.
@Cobra04 Did you have any luck in unlocking the bootloader for LG V35 ULM ??
xd7 said:
@Cobra04 Did you have any luck in unlocking the bootloader for LG V35 ULM ??
Click to expand...
Click to collapse
I have not
Cobra04 said:
I have not
Click to expand...
Click to collapse
Hopefully it will happen soon, let's keep up the hope.
Been poking around and still can't access bootloader on this phone. Even through ADB I can't get anything but a reboot. Anyone been having any luck?
Nope, LG won't let us unlock bootloader for this device. My first non rooted phone since original Droid. But it's still a test device for Google Fi so I accept it.
Cobra04 said:
Cannot find a way to enter the bootloader. Volume down + power doesn't do anything. Same with adb reboot bootloader.
Click to expand...
Click to collapse
1. Go to Developer options.
2. unlock OEM option.
3. Now, you will need IMEI number of your device.
4. To get the IMEI number for the phone, dial *#06# on the phone. You will get the IMEI number.
5. And now connect your phone to the PC.
6. Next, open the command prompt on the PC and type the following ADB Command code to reboot the phone into the bootloader.
adb reboot bootloader
Rahul,
Can this phones bootloader be unlocked using LG-Devs service? I looked over and didn't see V35 listed as a supported device.
rahul220 said:
1. Go to Developer options.
2. unlock OEM option.
3. Now, you will need IMEI number of your device.
4. To get the IMEI number for the phone, dial *#06# on the phone. You will get the IMEI number.
5. And now connect your phone to the PC.
6. Next, open the command prompt on the PC and type the following ADB Command code to reboot the phone into the bootloader.
adb reboot bootloader
Click to expand...
Click to collapse
Does not work. Did you ever test this on a LG v35? Give some proofs if you did else stop commenting just for the sake of commenting. Thank you.
It's clear you do not know anything about this particular phone.
1) LG has locked out bootloader access for most carrier branded phones starting with 2017 LG G6. Nothing you do will allow that functionality for those affected phones unless you Frankenstein it to another open market variant which allows that access. i.e., How we convert the AT&T H931 V30 to the open market US998 V30. At that point, then you now have fastboot flash commands and can access the bootloader. On H931 V30 (like AT&T V35), you cannot unless you do something like that.
2) You say to get the IMEI number, then don't even tell why you would need the IMEI number. You don't need the IMEI number ever to access a bootloader.
I think you copied and pasted part of some list from some website, which has nothing to do with this V35 phone.
rahul220 said:
1. Go to Developer options.
2. unlock OEM option.
3. Now, you will need IMEI number of your device.
4. To get the IMEI number for the phone, dial *#06# on the phone. You will get the IMEI number.
5. And now connect your phone to the PC.
6. Next, open the command prompt on the PC and type the following ADB Command code to reboot the phone into the bootloader.
adb reboot bootloader
Click to expand...
Click to collapse
First of all, power off your device. Connect the USB to your phone only. Now pressing & holding the Volume Down key connect the another port of your type C USB to the computer. Now your device will boot to a mode known as Recovery mode. Now find where is the Bootloader option. If you find "Reboot to bootloader" option, select this using Volume+/- & Power keys. Your device will Reboot to Bootloader or Fastboot mode.
Let me know it worked for you or not.
Saurav Dev said:
First of all, power off your device. Connect the USB to your phone only. Now pressing & holding the Volume Down key connect the another port of your type C USB to the computer. Now your device will boot to a mode known as Recovery mode. Now find where is the Bootloader option. If you find "Reboot to bootloader" option, select this using Volume+/- & Power keys. Your device will Reboot to Bootloader or Fastboot mode.
Let me know it worked for you or not.
Click to expand...
Click to collapse
This does NOT work. I tried pressing the following combinations and then plugging the phone via USB into the computer. I was using a Google Fi version of the V35.
No Buttons = Offline Charging mode
Volume down = Offline Charging mode
Volume Up = Firmware Update Screen
Power = Normal Boot
Vol up + Down = Offline Charging mode
Vol Down + Power = Endless Bootloop
Vol up + Power = Normal Boot
Also I think one of these combos turned off my USB support. When I plug the phone into my computer it will charge, but it wont give me the USB options...
LG V35 bootloader unlocked
ChazzMatt said:
Hello @ChazzMatt
Someone in Shenzhen China has unlocked the bootloader of LG V35. Looks like he is using similar vulnerability within the verification of bootloader for the V30 model series.
He can unlock the bootloader of LG V35 and LG V40.
https://www.mylgphones.com/wp-content/uploads/2018/12/lg-v35-484x1024.jpg
https://www.mylgphones.com/lg-v35-bootloader-can-now-be-unlocked.html
Click to expand...
Click to collapse
Sweet. Here's hopping we see root.
asialove2013 said:
ChazzMatt said:
Hello @ChazzMatt
Someone in Shenzhen China has unlocked the bootloader of LG V35. Looks like he is using similar vulnerability within the verification of bootloader for the V30 model series.
He can unlock the bootloader of LG V35 and LG V40.
https://www.mylgphones.com/wp-content/uploads/2018/12/lg-v35-484x1024.jpg
https://www.mylgphones.com/lg-v35-bootloader-can-now-be-unlocked.html
Click to expand...
Click to collapse
I'll believe it when they release their method of unlocking. Until then it's BS.
Click to expand...
Click to collapse
Cobra04 said:
asialove2013 said:
I'll believe it when they release their method of unlocking. Until then it's BS.
Click to expand...
Click to collapse
Buy a BOX,
Click to expand...
Click to collapse
asialove2013 said:
Buy a BOX,
Click to expand...
Click to collapse
Okay, do you have proof it will unlock this phone?
I don't know but if there were any root method that doesn't require unlocking bootloader ( like using kingo root or something else that exploit system vulnerability ) you can use dd command to erase LAF partition ( if exist in lg v35 because I don't have this device ) this will remove LG Advanced Flash screen and replace it with fastboot ( did it only in lg g3 )
i emailed LG asking if the V35 unbranded will be added to LG Developer which would allow for bootloader unlock...i got a response that made no sense and didn't answer my question.
any updates?

stuck in boot loop no recovery locked bootloader no adb access just fastboot

hi
someone gave me this broken phone so i don't know what happened to get it to this point
here's the breakdown of what it's doing and what i've tried
it's a sprint variant
bootloader ver mata-8a1a76e
baseband ver 2.0.c4-m2.0.2
secure boot yes
device state locked
no power and won't turn on unless connected with a usb cable to laptop or charger but when connected stays on until unplugged
i've tried multiple cables
stuck in boot loop on powered by android screen
with vol up and power just boot loops back to the powered by android screen like there is no recovery
with vol down and power boots into fastboot mode and is visible in simple adb under the fastboot tab i'm able to see the serial number but not under the adb tab there's no devices listed
when i try to use erase or flash commands it says cannot be done in a locked state which tells me the bootloader is locked and the oem and usb debug is not turned on
it says the active slot is b but won't let me change slots because of locked statues
is there anyway to turn on oem unlock and usb debug with it not booting i've tried all of the flashing unlock bootloader commands in simple adb's fastboot tab but nothing is working i can see and talk to the phone with fastboot but because of locked bootloader i can't do anything.
any help would be great it's not important it's just a phone to play around with abd and roms to see what i can do and try to teach myself somethings but it was stock the guy that gave it to me dosen't know anything about phones he dropped it and broke the touch screen and just got another one
so if anyone could point me in the right direction or tell me if it's possible to get oem unlock and usb debug turned on in a non booting no adb connection but fastboot connectable phone with no bootable recovery
if you need anymore info just let me know
thanks in advance
hippiehemp
hippiehemp said:
hi
someone gave me this broken phone so i don't know what happened to get it to this point
here's the breakdown of what it's doing and what i've tried
it's a sprint variant
bootloader ver mata-8a1a76e
baseband ver 2.0.c4-m2.0.2
secure boot yes
device state locked
no power and won't turn on unless connected with a usb cable to laptop or charger but when connected stays on until unplugged
i've tried multiple cables
stuck in boot loop on powered by android screen
with vol up and power just boot loops back to the powered by android screen like there is no recovery
with vol down and power boots into fastboot mode and is visible in simple adb under the fastboot tab i'm able to see the serial number but not under the adb tab there's no devices listed
when i try to use erase or flash commands it says cannot be done in a locked state which tells me the bootloader is locked and the oem and usb debug is not turned on
it says the active slot is b but won't let me change slots because of locked statues
is there anyway to turn on oem unlock and usb debug with it not booting i've tried all of the flashing unlock bootloader commands in simple adb's fastboot tab but nothing is working i can see and talk to the phone with fastboot but because of locked bootloader i can't do anything.
any help would be great it's not important it's just a phone to play around with abd and roms to see what i can do and try to teach myself somethings but it was stock the guy that gave it to me dosen't know anything about phones he dropped it and broke the touch screen and just got another one
so if anyone could point me in the right direction or tell me if it's possible to get oem unlock and usb debug turned on in a non booting no adb connection but fastboot connectable phone with no bootable recovery
if you need anymore info just let me know
thanks in advance
hippiehemp
Click to expand...
Click to collapse
Hi, were you able to fix this issue?
I have the same exact problem here, its been few months actually, but still trying to figure this out.
download the offical firmware images and flash with fastboot
bootloader lock has not effect on flashing stock firmware or whatever slot its on
Legitsu said:
download the offical firmware images and flash with fastboot
bootloader lock has not effect on flashing stock firmware or whatever slot its on
Click to expand...
Click to collapse
Are you sure of that? Because Essential specifically instructs to enable "OEM Unlocking" and unlock the BL before flashing the factory image via fastboot...
Legitsu said:
download the offical firmware images and flash with fastboot
bootloader lock has not effect on flashing stock firmware or whatever slot its on
Click to expand...
Click to collapse
Oh God...
Please stop...
You are full of bad information...
You cannot use fastboot with a locked bootloader .. it is the Essential way...
hippiehemp said:
hi
someone gave me this broken phone so i don't know what happened to get it to this point
here's the breakdown of what it's doing and what i've tried
it's a sprint variant
bootloader ver mata-8a1a76e
baseband ver 2.0.c4-m2.0.2
secure boot yes
device state locked
no power and won't turn on unless connected with a usb cable to laptop or charger but when connected stays on until unplugged
i've tried multiple cables
stuck in boot loop on powered by android screen
with vol up and power just boot loops back to the powered by android screen like there is no recovery
with vol down and power boots into fastboot mode and is visible in simple adb under the fastboot tab i'm able to see the serial number but not under the adb tab there's no devices listed
when i try to use erase or flash commands it says cannot be done in a locked state which tells me the bootloader is locked and the oem and usb debug is not turned on
it says the active slot is b but won't let me change slots because of locked statues
is there anyway to turn on oem unlock and usb debug with it not booting i've tried all of the flashing unlock bootloader commands in simple adb's fastboot tab but nothing is working i can see and talk to the phone with fastboot but because of locked bootloader i can't do anything.
any help would be great it's not important it's just a phone to play around with abd and roms to see what i can do and try to teach myself somethings but it was stock the guy that gave it to me dosen't know anything about phones he dropped it and broke the touch screen and just got another one
so if anyone could point me in the right direction or tell me if it's possible to get oem unlock and usb debug turned on in a non booting no adb connection but fastboot connectable phone with no bootable recovery
if you need anymore info just let me know
thanks in advance
hippiehemp
Click to expand...
Click to collapse
Same problem here. After a official upgrade i can only access to fastboot mode. Select recovery, start, etc... reset the phone and returns to fastboot mode.
Secure boot - yes
only diference - Bootloader version mata-b9326aa and baseband 2.0.c4-M2.0.10
YaKuM0 said:
Same problem here. After a official upgrade i can only access to fastboot mode. Select recovery, start, etc... reset the phone and returns to fastboot mode.
Secure boot - yes
only diference - Bootloader version mata-b9326aa and baseband 2.0.c4-M2.0.10
Click to expand...
Click to collapse
If the bootloader is locked, and you can't get to recovery to sideload, you're stuck

Galaxy Note 4 N910C - Can't unlock bootloader - Fastboot mode is missing

Hi,
I want to install a custom ROM in my Note 4 and upgrade from Android 6.01 to Android 11, and I know that the first step is to unlock the bootloader to avoid issues later on in the process.
I've researched different ways of doing it, and this is what I found:
1. Enable the OEM unlocking option in the phone.
The phone does not have the option to enable OEM unlocking in the developer options of the phone.
2. Go to download mode (starting phone with Power+Home+Vol Down keys).
At this point 3 options should appear. One of them being Press Vol Up to enter Device unlock mode. Well, only 2 options appear and the one missing is Enter
Device unlock mode.
3. Start in Recovery Mode, then select Enter Fastboot.
I started the phone using Power+Volume up+Home to enter Recovery Mode, and a menu presented with several options which should have included the
Enter Fastboot option, but the option is missing in the menu.
4. Use your PC to issue adb+fastboot commands.
I successfully connected the phone to the PC and tried to issue the corresponding commands using adb and fastboot. Adb commands work well. Fastboot
commands do not "see" the phone. (just in case I've tried several different drivers)
At this point I've run out of options, and everything points to the "hard-to-believe" fact that this phone doesn't have the fastboot mode.
Is it possible that the phone does not have a way to unlock the bootloader? or at least checking that the bootloader is unlocked in a way that leaves no doubt about it? (I can't risk bricking the phone based on the assumption that the bootloader is factory unlocked)
I will really appreciate any help in working this sort of mystery out.
Thank you!!
I
rfernandez2007 said:
Hi,
I want to install a custom ROM in my Note 4 and upgrade from Android 6.01 to Android 11, and I know that the first step is to unlock the bootloader to avoid issues later on in the process.
I've researched different ways of doing it, and this is what I found:
1. Enable the OEM unlocking option in the phone.
The phone does not have the option to enable OEM unlocking in the developer options of the phone.
2. Go to download mode (starting phone with Power+Home+Vol Down keys).
At this point 3 options should appear. One of them being Press Vol Up to enter Device unlock mode. Well, only 2 options appear and the one missing is Enter
Device unlock mode.
3. Start in Recovery Mode, then select Enter Fastboot.
I started the phone using Power+Volume up+Home to enter Recovery Mode, and a menu presented with several options which should have included the
Enter Fastboot option, but the option is missing in the menu.
4. Use your PC to issue adb+fastboot commands.
I successfully connected the phone to the PC and tried to issue the corresponding commands using adb and fastboot. Adb commands work well. Fastboot
commands do not "see" the phone. (just in case I've tried several different drivers)
At this point I've run out of options, and everything points to the "hard-to-believe" fact that this phone doesn't have the fastboot mode.
Is it possible that the phone does not have a way to unlock the bootloader? or at least checking that the bootloader is unlocked in a way that leaves no doubt about it? (I can't risk bricking the phone based on the assumption that the bootloader is factory unlocked)
I will really appreciate any help in working this sort of mystery out.
Thank you!!
Click to expand...
Click to collapse
If your phone is exynos, just factory data reset and go to download mode and flash TWRP.
SweptDevUwU said:
I
If your phone is exynos, just factory data reset and go to download mode and flash TWRP.
Click to expand...
Click to collapse
Thank you for your answer!
It is Exynos indeed.
Have you tried this in a similar situation? or in case you haven't, could you please explain how you are certain that this will work well?
Because it is difficult to ignore the large number of warnings about going on with the flashing without being sure that the bootloader is unlocked.
rfernandez2007 said:
Thank you for your answer!
It is Exynos indeed.
Have you tried this in a similar situation? or in case you haven't, could you please explain how you are certain that this will work well?
Because it is difficult to ignore the large number of warnings about going on with the flashing without being sure that the bootloader is unlocked.
Click to expand...
Click to collapse
Hello, I'm using exynos as well, just like he said just install a compatible TWRP then flash a custom rom you want
https://forum.xda-developers.com/t/...xy-note-4-custom-recovery-07-28-2021.4311777/
karlsuu said:
Hello, I'm using exynos as well, just like he said just install a compatible TWRP then flash a custom rom you want
https://forum.xda-developers.com/t/...xy-note-4-custom-recovery-07-28-2021.4311777/
Click to expand...
Click to collapse
Hi!
Thank you for your answer.
Ok. I'll review/follow the procedure in the link you suggested and let you know how it goes.
Hi,
It worked!!
Thank you very much to both of you!

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