Bootloader black screen? - Samsung Galaxy Z Fold 2 Questions & Answers

Tried to boot into bootloader to unlock it but... download mode not appear
When i go to recovery and select "reboot bootloader " i have a blackscreen and need to reboot recovery with keys... trying lot of time but no way
Anyone can help?
SM-F916B XXU1ATHE
buying on samsung from France

mric034 said:
Tried to boot into bootloader to unlock it but... download mode not appear
When i go to recovery and select "reboot bootloader " i have a blackscreen and need to reboot recovery with keys... trying lot of time but no way
Anyone can help?
SM-F916B XXU1ATHE
buying on samsung from France
Click to expand...
Click to collapse
Reboot Phone in Download Mode: Connect USB-cable to your computer. Hold down "Volume up" and "Volume down" at same time. While holding down, connect the USB-cable to your phone.

> Connect the Galaxy Z Fold 2 to your PC/Laptop via a USB Type-C cable whilst the device is switched on
> Hold the power key and tap restart
> Once the phone begins to restart hold both Volume Up + Volume down together
> Press the Volume Up key on the next menu to enter download mode

Thanks for help guys. Another question, is anyone have root whith Magisk? I try but it don't work for me...

Related

[Q] cant enter download mode

i'm just about to try and root my galaxy tab 2 10.1 running 4.2.2
following instruction from various web sites it tells me to put the device into download mode by turning the device off then holding vol down and power buttons until I get android icon
when I hold both buttons I get bootloop of Samsung logo until I let go of buttons then I get a
no command error
then the options
reboot system now
apply update from adb
apply update from ex storage
wipe data fact reset
wipe cache partition
apply update from cache
any help to enter download mode would be great
thanks in advance
mgalea1981 said:
i'm just about to try and root my galaxy tab 2 10.1 running 4.2.2
following instruction from various web sites it tells me to put the device into download mode by turning the device off then holding vol down and power buttons until I get android icon
Click to expand...
Click to collapse
For download mode on your tab, you need to hold Power and Volume UP (not Down). Otherwise, you get into the recovery mode...
kt-Froggy said:
For download mode on your tab, you need to hold Power and Volume UP (not Down). Otherwise, you get into the recovery mode...
Click to expand...
Click to collapse
this brings me to a screen that says about flashing a custom rom will void warranty?
is this download mode?
mgalea1981 said:
this brings me to a screen that says about flashing a custom rom will void warranty?
is this download mode?
Click to expand...
Click to collapse
Yes. And you have to press Power or VolDown (I think?) to confirm -- it tells you right there. When you are finally in the download mode, you will see a message like "Downloading. Do not disconnect target..." That's when Odin should recognize your tablet and be able to start flashing.
You press Volume Down and Power. Until it appears the lobo you only keep pressing Volume down and dont power button.

Recovery mode - Device buttons are not working

I have a micromax doodle 4 (Q391) with broken power and volume down buttons and its stuck in boot logo. So whenever I connect my phone to charger it will turn on and just keep showing the logo. However, I'm managed to enter recovery mode to reset device or wipe data BUT as I mentioned the power button is not working to select nor the volume button is working around to highlight options. Since its stuck in bootloop, I can't even enable usb debugging.
Btw, the battery can't be removed in this model. All I have is a reset button, volume up button and If i give some hard push on volume down its working sometimes. Some help would be very useful. Thank you.
After the vibration that you notice at the time you start your mobile you need to hold down the volume down button first (don't press both of them simultaneously) and then press and hold down the power button to boot into recovery menu.
Prateek(Patrick) said:
After the vibration that you notice at the time you start your mobile you need to hold down the volume down button first (don't press both of them simultaneously) and then press and hold down the power button to boot into recovery menu.
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Click to collapse
I have a broken power button but I'm able to boot into recovery in a different way. My question is "How to select options in recovery mode with power button not working?".
Visit a nearby micromax service center and get it repaired I don't own a micromax but I hope that the price for repairs are nominal.
How ??
pravinsundarajan said:
I have a micromax doodle 4 (Q391) with broken power and volume down buttons and its stuck in boot logo. So whenever I connect my phone to charger it will turn on and just keep showing the logo. However, I'm managed to enter recovery mode to reset device or wipe data BUT as I mentioned the power button is not working to select nor the volume button is working around to highlight options. Since its stuck in bootloop, I can't even enable usb debugging.
Btw, the battery can't be removed in this model. All I have is a reset button, volume up button and If i give some hard push on volume down its working sometimes. Some help would be very useful. Thank you.
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Click to collapse
how did you get it to recovery mode without the power button please !
Alex300202 said:
how did you get it to recovery mode without the power button please !
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Click to collapse
Probably by using the adb command below.
adb reboot recovery
Sent from my LGL84VL using Tapatalk
thank you
Droidriven said:
Probably by using the adb command below.
adb reboot recovery
Sent from my LGL84VL using Tapatalk
Click to expand...
Click to collapse
Thank you mate, I will try it and get back to you

Can't enter download mode S10e please help

I have searched and looked for alternatives on how to maybe enter download mode but have not found any solution. I have tried phone off then vol. down + bixby then plug in usb, also pow button + bixby + vol. down then plug usb but every time I do this all I get is a circle with a lightning logo with battery percentage. I also went into recovery mode and tried rebooting into bootloader however that just ends up rebooting back to the recovery menu. Please help. Thank you.
anyone with any tip on what might help or be the issue? I have an exynos version.
wbaez0320 said:
anyone with any tip on what might help or be the issue? I have an exynos version.
Click to expand...
Click to collapse
Hi, try to reboot into bootloader using ADB.
First off thank you for the response.
I tried that as well however maybe I did it wrong. Is it? adb reboot bootloader or adb reboot download
It's so strange you know cause I've tried so many different ways and I thought that rebooting to bootloader from recovery menu would definitely work however all it does is reboot back to my home screen.
Power off phone and just hold down pwr+vol up+ Bigsby for like 8ish seconds and it should boot to download.
Also adb/fastboot is a second route, read through this the below link. Make sure you have the Samsung drivers installed and adb/fastboot properly installed and prerequisites. https://www.theandroidsoul.com/unlock-bootloader-via-fastboot-android/
Or try to boot in safe mode
Hold power button when phone is on, then long press power off, and then select safe mode. https://www.verizonwireless.com/support/knowledge-base-223011/
wbaez0320 said:
I have searched and looked for alternatives on how to maybe enter download mode but have not found any solution. I have tried phone off then vol. down + bixby then plug in usb, also pow button + bixby + vol. down then plug usb but every time I do this all I get is a circle with a lightning logo with battery percentage. I also went into recovery mode and tried rebooting into bootloader however that just ends up rebooting back to the recovery menu. Please help. Thank you.
Click to expand...
Click to collapse
You have activated USB Debugging on Programer options?
yes USB debugging has been activated
NewWorldOrphan9 said:
Power off phone and just hold down pwr+vol up+ Bigsby for like 8ish seconds and it should boot to download.
Also adb/fastboot is a second route, read through this the below link. Make sure you have the Samsung drivers installed and adb/fastboot properly installed and prerequisites. https://www.theandroidsoul.com/unlock-bootloader-via-fastboot-android/
Or try to boot in safe mode
Hold power button when phone is on, then long press power off, and then select safe mode. https://www.verizonwireless.com/support/knowledge-base-223011/
Click to expand...
Click to collapse
well apparently I can't boot into safe mode either, while screen on I long pressed power button then long pressed power of for more then 10 secs but that doesn't do anything
crazy thing is I'm able to boot into recovery with no problem but that's about it. also adb does recognize my device as I can see the characters after inputting "adb devices"

[Guide]How to access recovery on Global Nokia 5.1 Plus

Hey guys,
I just found out how to access the working recovery on the Nokia 5.1 Plus.
Instructions:
1. Make sure USB debugging is enabled.
2. Run adb reboot recovery from your pc
3. When you see the android and the no command statement press power+volume up simultaneously.
5. Say hi to the recovery!
Hope this helps.
Sorry guys but pressing and holding power+volume up turned out to be useless; you need to run the command from a pc.
BurningGrip3 said:
Sorry guys but pressing and holding power+volume up turned out to be useless; you need to run the command from a pc.
Click to expand...
Click to collapse
I only connect the usb and get + vol and power until recovery starts, then press the volume and power times until you get the message
https://telegra.ph/Como-instalar-manualmente-las-actualizaciones-07-19
KRou705 said:
I only connect the usb and get + vol and power until recovery starts, then press the volume and power times until you get the message
https://telegra.ph/Como-instalar-manualmente-las-actualizaciones-07-19
Click to expand...
Click to collapse
I meant that trying not to run the command and pressing volume up+power with the device off will not work as it will not bring you the message.

Question my Galaxy A12 won't boot to android or download mode help me pls

so I just tried to install unofficial TWRP 3.5.0 on my Samsung galaxy a125m and everything went fine, Odin said done. Then I just tried to start TWRP by pressing power and vol up and it didn't start, so I thought I might have done something wrong and rebooted to download mode and flashed it again, Odin said done, then I unplugged the USB cable and now it won't boot, neither to the system or recovery, even to download mode, it did enter download mode a few times before but I pressed the wrong button and had to cancel and enter again, now it won't even enter download mode so I can't flash stock rom to fix bootloop... pls how can I solve this I'm desperate
when I try to enter download mode by pressing volume up + volume down it just shows up charging mode without any numbers, then it turn on and shows Samsung logo, unlocked bootloader warning screen, and the Samsung logo again, but then just restarts and repeats all again...
when I try to press volume up + volume down + power, nothing really happens...
someone help me please
You need to keep both volume up and down pressed, then plug in the charging cable. It should enter download mode, no need to press the power button like in older samsungs.
PhotonIce said:
You need to keep both volume up and down pressed, then plug in the charging cable. It should enter download mode, no need to press the power button like in older samsungs.
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Click to collapse
yeah I did that a lot of times, it used to work now It doesn't anymore
in this video you can see what's going on, I'm pressing both volume keys and nothing happens
Your browser is not able to display this video.
Is the cable plugged into a charger and on?
Have you considered that your volume buttons may not be working?
Same hear
Try attaching your phone to the PC, and then pressing volume down + power to reset the phone, (for about 7~8 seconds) then immediately press the volume down and up buttons, that's how I recovered from it. Tell me if it worked
juliano-oh! said:
Try attaching your phone to the PC, and then pressing volume down + power to reset the phone, (for about 7~8 seconds) then immediately press the volume down and up buttons, that's how I recovered from it. Tell me if it worked
Click to expand...
Click to collapse
Please help it dosent worked
No pc detection
No download mode
No recovery
No charging
Hello, unfortunately in these cases the only solution is to enter download mode, check if any button is damaged or if the cable works and if it is well connected, press the buttons harder, hold down the volume up and volume down buttons at the same time , by pressing the strong buttons, for about 6 seconds and then connect the cable. If you don't try another cable to see if that's the problem there is no other solution as the phone is not recognized by an app that can put it into download mode when turned off the solution is the one I already told you about. I hope you have fixed that problem. Sorry for my bad English.
developeMYWORLD said:
Please help it dosent worked
No pc detection
No download mode
No recovery
No charging
Click to expand...
Click to collapse
To Escape the Black Screen of Death or Bootloop
To boot to RECOVERY MODE
Method 1
First connect phone to the PC for 30 minutes
Hold all 3 keys and release volume down when it buzzes.
Method 2
1. Plug in USB cable to PC
2. Hold down all 3 buttons on phone.
3. When it buzzes release volume down and plug in USB cable to phone.
Then restore your backup or install a ROM
To boot to DOWNLOAD MODE
Method 1
First connect phone to the PC for 30 minutes
Hold all 3 keys and release power when it buzzes.
Method 2
1. Plug in USB cable to PC
2. Hold down all 3 buttons on phone.
3. When it buzzes release power button and plug in USB cable to phone.
Then use Odin to flash official firmware.
@physwizz
I am having a similar problem with the Samsung A12 SM-a125u
I never could enter into this "Downloading mode".
I tried flashing the stock ROM through ADB with fastboot, and I have another problem that I've never seen before: ADB can see the device while in recovery mode, but fastboot can't. And so it won't allow me to flash the ROM and I don't even know how Odin is supposed to help yet; I think I needed to enter Downloading mode for that, but I can't get into it.
I'm working on this phone for a friend who was given it because his friend's mom doesn't remember the password to it. Does that matter? It's worth noting that because of that I cannot get in to turn on OEM unlocking or dev mode, but idk why that would come into play in recovery mode. Also, the model indicates this is an AT&T phone, and tutorials online have acknowledged this model in their "applicable models" list at the beginning of their tutorials, but I know that carrier phones can cause problems all over the place (stop buying carrier locked phones people!); is this a problem?
How the heck do I flash the stock ROM to this this?

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