S20 ultra cannot enter download / bootloader mode - Samsung Galaxy S20 / S20+ / S20 Ultra Questions &

Hi folks
Anyone seen this issue before (see pic) ?
When I try to enter download / bootloader mode I get stuck on red text 'entering fastboot mode... ".
Odin cannot detect the phone connected to PC
The only way out is to press and hold power and volume down for 5 seconds to reboot normally
Tried factory reset and also tried clear data & clear cache partitions in recovery mode.
FYI I'm on O2 UK branded July 2020 stock firmware

With this steps the problem will be solved:
Power Off
Insert cable on pc
Press Vol Up + Vol Down
Insert cable on phone without releasing the buttons

But I agree, the 'old' method does not work anymore, I am getting the same message as the OP.

M1LL3R said:
With this steps the problem will be solved:
Power Off
Insert cable on pc
Press Vol Up + Vol Down
Insert cable on phone without releasing the buttons
Click to expand...
Click to collapse
Amazing worked first time ! Thanks
Is this a very recent change by Samsung? I ran various Google searches but could not find any relevant article on the web or on xda forums

Related

gslate / Optimus pad MDP / Recovery mode and fastboot Found

MDP/recovery Mode
hold vol down and hit the reset button next to the sim card keep hold vol down till you enter MDP/Recovery mode
FastBoot mode
hold vol UP and hit the reset button next to the sim card keep hold vol down till you enter Fastboot
APX mode
turn device off. Press power while holding both Vol buttons (note nothing is desplayed on the screen)
Now lets get Clockwork Mod
hi everyone i have a major issue with my rooted gslate.if anyone can help it would be greatly appreciated. i downloaded cw from the market and when it askes you for compatibility i accedently chose the option (lg optimus 3d) thinking it was for my gslate and now after i turned off the gslate and go to turn it back on its stuck on LG blackscreen and says
[HasValidKernelImage] Magic value mismatch:
[DetectOperatingSystems]kernel image is invalid !!!
Starting Fastboot USB download protocol
Ive looked all over the internet and cant find anything to help me out so please can someone help me.
maybe a way to nvflash the proper kernel back. sorry for posting here but the best help is on xda
Solved
Sent from my PG86100 using XDA Premium App
salmanaman said:
Solved
Click to expand...
Click to collapse
How? cos i have a similar problem. ie: where did you get the original boot.img ?
belkre said:
MDP/recovery Mode
hold vol down and hit the reset button next to the sim card keep hold vol down till you enter MDP/Recovery mode
FastBoot mode
hold vol UP and hit the reset button next to the sim card keep hold vol down till you enter Fastboot
APX mode
turn device off. Press power while holding both Vol buttons (note nothing is desplayed on the screen)
Now lets get Clockwork Mod
Click to expand...
Click to collapse
I couldn't enter recovery mode with vol - and reset button. I had to use Vol - and the power button. Just a heads up. Also, what happens if you don't have an update.zip file on your SD? Does it then go to a recovery menu or is there no recovery menu on this device assuming you have not installed CWM?

[Q] (HELP) Cant Enter Download mode

I have a plan to re-flash my LGOGP E988 stock kitkat not rooted and i already downloaded the files i need but when i try to enter download mode based on what i read in all thread regarding to my unit (vol+ & vol - + usb plug into computer), thers no luck for me.. It always go to charging and not in download mode. I already installed required driversCan you help me?
Combination i tried that was no luck(usb plug in computer);
1. Off phone>remove battery>hold both volume>reinsert battery>plug micro usb
2. Off phone>hold both vol.>plug micro usb
3. Off phone>hold +vol >plug micro usb(vice versa, also use -vol)
4. Off phone> hold both vol. >Power button (go to hard reset)
5. Remove battery> hold both vol.>insert micro usb
Please help me i will update things that i already try.
Thanks in advance..
And i know thia will be benefit other members that getting hard times to enter download mode.
robtoman said:
I have a plan to re-flash my LGOGP E988 stock kitkat not rooted and i already downloaded the files i need but when i try to enter download mode based on what i read in all thread regarding to my unit (vol+ & vol - + usb plug into computer), thers no luck for me.. It always go to charging and not in download mode. Can you help me?
Combination i tried that was no luck;
1. Off phone-remove battery-hold both volume-reinsert battery-plug usb to computer
2. Off phone- hold both vol.-plug usb to computer
3. off phone- hold +vol -plug usb tomputer (vice versa alao use -vol)
4. Off phone- hold both vol. Power button (go to hard reset)
Please help me i will update things that i already try?thanks in advance..
Click to expand...
Click to collapse
Skip the reinsert battery part in your item #1:
1) Remove battery
2) Hold Volume plus and minus keys down
3) Insert USB cable while still continuing to hold down those two buttons.
WIthin 1-2 seconds you should have download mode. When download mode appears, then re-insert battery. For sure you're not going into charging mode with no battery to charge. This is the method I always use, and it always works (aside from hard-brick situations, but you can access battery charging mode/graphics, which surely means that ain't you).
not works.
culot said:
Skip the reinsert battery part in your item #1:
1) Remove battery
2) Hold Volume plus and minus keys down
3) Insert USB cable while still continuing to hold down those two buttons.
WIthin 1-2 seconds you should have download mode. When download mode appears, then re-insert battery. For sure you're not going into charging mode with no battery to charge. This is the method I always use, and it always works (aside from hard-brick situations, but you can access battery charging mode/graphics, which surely means that ain't you).
Click to expand...
Click to collapse
I realy appreciate your help but i try it several time but still not enter download mode. Just always show the boot logo of LG then off then show again the boot logo. Why am i getting this? Can anyone has their own solutions?
robtoman said:
I realy appreciate your help but i try it several time but still not enter download mode. Just always show the boot logo of LG then off then show again the boot logo. Why am i getting this? Can anyone has their own solutions?
Click to expand...
Click to collapse
What does your computer say when you plug it in? If in Windows check Device Manager and see what your phone is being recognized as. Can you access the phone's contents via USB cable from your computer? Does ADB recognize it at all? Or does it just loop like that, not starting?
Also, it sometimes takes several tries to get it into download mode, as if you're holding the buttons down and not timed just right, the phone ignore your attempt. Make sure you do not let go of both volume buttons even after you plug in the USB cable, you must continue to hold them down for a couple of seconds (until the DL mode appears). Don't even think about putting the battery back in until you see that download mode box. Try that a few times maybe? If it doesn';t work ,maybe you're boned.
robtoman said:
I realy appreciate your help but i try it several time but still not enter download mode. Just always show the boot logo of LG then off then show again the boot logo. Why am i getting this? Can anyone has their own solutions?
Click to expand...
Click to collapse
remove battery and place it again. then press both volume+ and Volume - . By keeping pressed both buttons insert your usb cable. don't release pressed buttons until its in download mood. by the way install unified adb driver for android by koush if your using windows 8.1 otherwise lg official driver is ok

Galaxy Tab S SM-800 stuck with flashing TWRP logo

I was provided this device to try and help resolve the issue. I am not sure how it got to this point. I believe that it was rooted with a custom ROM, then the individual tried to install a stock ROM (method unknown).
The current situation is:
Galaxy Tab S 10.5 SM-T800 stuck in a bootloop with the TWRP logo on the screen. I can not get the tablet to go into download mode. I have tried all of the different methods to enter download mode, i.e. Power & Vol - & Home, Drain the battery > Plug into PC while holding Vol - & Home, Power & Vol + & Vol -. None of these combinations do anything. The only thing I can do to get a response is to press Power & Vol +, which reboots the device right back into the TWRP loop after the Samsung Logo. Power button alone does nothing.
The device is seen by Windows with the Samsung Drivers but is not mounted to a drive letter, and I can not mount it.
ADB , fastboot and Odin do not see the device.
I would like to flash a new rom either custom or stock, but I need to be able to get the device into download mode so it can be seen by odin.
Any help would be great.
Mike
Probably just timing and pilot error this one. I've never known of any Samsung device boot but be incapable of booting to download mode as download mode is bootloader related.
No working bootloader means dead device.
No matter what state the device is in at the moment with the usb cable removed, hold POWER + VOL DOWN (not up) + HOME until the Samsung boot logo comes up, hold for another couple of seconds then release. Download mode should appear.
I know it should be easy....
I know it should work but it is not, I will make a vid of the process and post. I can not make heads or tails.
Mike
ashyx said:
Probably just timing and pilot error this one. I've never known of any Samsung device boot but be incapable of booting to download mode as download mode is bootloader related.
No working bootloader means dead device.
No matter what state the device is in at the moment with the usb cable removed, hold POWER + VOL DOWN (not up) + HOME until the Samsung boot logo comes up, hold for another couple of seconds then release. Download mode should appear.
Click to expand...
Click to collapse
Is the home button actually working, are you pressing it firm enough?
If the home button doesn't register then the tablet will simply reboot.
Its a bit odd why twrp doesn't fully boot though unless it's the wrong one.
Does it hang at the twrp logo or continually reboot?

S20 Ultra att can't access recovery or download mode

I've got att S20 ultra and can't access either download mode or the recovery mode, no matter what I do.
I forgot the pin code and can't reset it.
Tried vol up + power, but phone just boots up.
Pushed vol up and vol down with usb cable, but still same,
Any ideas?
Anyone?
Easiest option if forgot yr pin is to go to Google find my device on a computer login with your Google password registered to that locked device and erase the phone from there. Odd u cannot get into recovery maybe att locked that feature?
I have no problems with entering recovery using vol up + power.
It's easiest to do it after a restart where you press the buttons immediately after the restart has started and keep pressing until recovery shows up.

Unable to boot into recovery or Download mode on Note10 Plus SM-N975F Exynos

Unable to boot into recovery or Download mode on Samsung Note10 Plus SM-N975F Exynos version. I usually remove/bypass FRP (google account) on devices for customers.
I have a customer's Note10plus devices which is still on pincode lock screen trying to hard reset and remove FRP but can't enter into recovery mode. Tried to enter into download to flash with new firmware but unable to boot into download mode either. Looks like the device is remotely locked via Find my mobile which is preventing to hard reset the device, anyone knows about any new security feature ?
RECOVERY MODE:
1: Begining the process by holding the Volume Down + Power key in order to shut off the phone.
2: As soon as the phone is off, hold the Volume Up and Power button till the Samsung logo appears
3: Let go of held buttons when the SAMSUNG Galaxy logo pops up.
4: At this moment i should be seeing the Recovery mode but no its rebooting and getting error : "[PDP] backup fail: setup-wizard finish"
I'm a pro in rebooting devices into recovery and download mode usually get success in first attempt but sometime have to try 2-3 times as well as timing is the key in pressing and holding the combination of keys so surely not the timing issue on this devices.
Can't even use the ADB method as well coz the device is on lock screen, Can't enable USB debugging or see the pop-up on screen to enable it due to being on lock screen.
.\ADB DEVICES - Not reading or showing the connected Note10plus via the official USB cable.
Any help or information would be very helpful and highly appreciated Thanks.
This don't even make sense. If the customer can log in on the pc and lock the screen and such they can also log in and remove it. This whole shebang seems shady and more than likely you will find no help here. Most of us do not support bypassing of frp especially since you stated the customer obviously has access to the device in some form
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"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
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It is with the legitimate owner i guess but when they are entering the pin code its coming up with the error " [PDP] back-up:fail setup-wizard [FINISH]" as per the image attached.
Click to expand...
Click to collapse
I have that PDP toast message also when trying to enter recovery mode etc. No pin or passwords are set on my device.
arshad926 said:
Unable to boot into recovery or Download mode on Samsung Note10 Plus SM-N975F Exynos version. I usually remove/bypass FRP (google account) on devices for customers.
I have a customer's Note10plus devices which is still on pincode lock screen trying to hard reset and remove FRP but can't enter into recovery mode. Tried to enter into download to flash with new firmware but unable to boot into download mode either. Looks like the device is remotely locked via Find my mobile which is preventing to hard reset the device, anyone knows about any new security feature ?
RECOVERY MODE:
1: Begining the process by holding the Volume Down + Power key in order to shut off the phone.
2: As soon as the phone is off, hold the Volume Up and Power button till the Samsung logo appears
3: Let go of held buttons when the SAMSUNG Galaxy logo pops up.
4: At this moment i should be seeing the Recovery mode but no its rebooting and getting error : "[PDP] backup fail: setup-wizard finish"
I'm a pro in rebooting devices into recovery and download mode usually get success in first attempt but sometime have to try 2-3 times as well as timing is the key in pressing and holding the combination of keys so surely not the timing issue on this devices.
Can't even use the ADB method as well coz the device is on lock screen, Can't enable USB debugging or see the pop-up on screen to enable it due to being on lock screen.
.\ADB DEVICES - Not reading or showing the connected Note10plus via the official USB cable.
Any help or information would be very helpful and highly appreciated Thanks.
Click to expand...
Click to collapse
Samsung recently changed the download mode entry process.
1. Power down device
2. Hold volume down/up buttons and keep them pressed
3. Connect phone to a pc using usbc cable
dezborders said:
Samsung recently changed the download mode entry process.
1. Power down device
2. Hold volume down/up buttons and keep them pressed
3. Connect phone to a pc using usbc cable
Click to expand...
Click to collapse
Plug the phone into a pc with USB -c cacble whilst the phone is on and you inside of windows, in other word you need to be logged into windows 10.
Power off the phone (keep cable plugged in and pc on at all times)
Hold Volume Up + Power Button until you get into recovery mode.
plug in the official earphone the original one from the box, then try to enter to the recovery mode
Limeybastard said:
I have that PDP toast message also when trying to enter recovery mode etc. No pin or passwords are set on my device.
Click to expand...
Click to collapse
plug in the official earphone the original one from the box, then try to enter to the recovery mode
godsboy7777 said:
Plug the phone into a pc with USB -c cacble whilst the phone is on and you inside of windows, in other word you need to be logged into windows 10.
Power off the phone (keep cable plugged in and pc on at all times)
Hold Volume Up + Power Button until you get into recovery mode.
Click to expand...
Click to collapse
THX mate worked )
dezborders said:
Samsung recently changed the download mode entry process.
1. Power down device
2. Hold volume down/up buttons and keep them pressed
3. Connect phone to a pc using usbc cable
Click to expand...
Click to collapse
Thanks man... It worked
After the second android 11 update, "recovery mode" can be accessed as follows: turn off the phone, wait 10 sec. , connect it to the laptop with the USB-C cable. After the battery percentage appears, press BIXBY + VOLUME UP + POWER BUTTON. When the logo appears, release VOLUME UP and POWER BUTTON and press VOLUME DOWN without releasing the BIXBY button.
same thing was happending with my s10 plus my google maps and youtbe werent working video will work to 6 seconds and stop workling maps wont show routes when searching. couldnt get into recov mode as didnt know the new procedure this helped so much than you so much man
Silviu001 said:
After the second android 11 update, "recovery mode" can be accessed as follows: turn off the phone, wait 10 sec. , connect it to the laptop with the USB-C cable. After the battery percentage appears, press BIXBY + VOLUME UP + POWER BUTTON. When the logo appears, release VOLUME UP and POWER BUTTON and press VOLUME DOWN without releasing the BIXBY button.
Click to expand...
Click to collapse
Can't be right as Bixby button = Power button...
TheMadScientist said:
This don't even make sense. If the customer can log in on the pc and lock the screen and such they can also log in and remove it. This whole shebang seems shady and more than likely you will find no help here. Most of us do not support bypassing of frp especially since you stated the customer obviously has access to the device in some form
Click to expand...
Click to collapse
Can someone here plese help me. Easter Sunday I get a text gif from my Sister and now I cant do anything with my S9. I read here about plugging S9 into windows machine but that scares me. I'm ready to call it quits with Samsung. This is the second device in a few years that has locked up on me. Could this be a hack or maleware? The new login feature for widows that includes a pin didnt work today either. I can get into windows fine with password. I did go to Google find my device and a map shows Africas west coast. HELP
In s10 plus i can't yet insert in recovery mode...Turn off the device, after the buttons combination Power button+Volume up+Bixby button and inserting usb cable in laptop doesn't insert in recovery mode and when open normally is displayed the error " [PDP] back-up:fail setup-wizard [FINISH]"
Any solution in this problem.......?
Hi, I have a similar problem. My Note 10+ stuck at bootloader page and will not power down. I could not use normal procedures to go to download or recovery mode. I drained off my Note's battery but once I plug the charger back to charge its battery. The bootloader page shows up. Any suggestions that can resolve this problem? I attached a screenshot here. Thanks in advance.
user109 said:
Hi, I have a similar problem. My Note 10+ stuck at bootloader page and will not power down. I could not use normal procedures to go to download or recovery mode. I drained off my Note's battery but once I plug the charger back to charge its battery. The bootloader page shows up. Any suggestions that can resolve this problem? I attached a screenshot here. Thanks in advance.
Click to expand...
Click to collapse
Hey there,
I've got some possibly important questions:
Does the Samsung logo show up on boot?
How did you try to boot into download- or recovery-mode, specifically did you press the power- and volume buttons to boot, just pressed the volume buttons, with/without plugged-in USB cable?
Does ADB/Fastboot/Odin/Heimdall/Smart Switch or anything recognize your device?
Any idea of what had been flashed onto the phone?
Does the battery percentage thingy show up when you plug a charger into the phone?
Have a nice morning/afternoon/evening.
Cheers
user109 said:
Hi, I have a similar problem. My Note 10+ stuck at bootloader page and will not power down. I could not use normal procedures to go to download or recovery mode. I drained off my Note's battery but once I plug the charger back to charge its battery. The bootloader page shows up. Any suggestions that can resolve this problem? I attached a screenshot here. Thanks in advance.
Click to expand...
Click to collapse
Does it boot if you press the power button from that screen.
I believe that screen appears after bootloader has been unlocked....which probably means device is rooted.
You should be able to boot into the system by tapping the power button from that screen.
Nic0_ said:
Hey there,
I've got some possibly important questions:
Does the Samsung logo show up on boot?
How did you try to boot into download- or recovery-mode, specifically did you press the power- and volume buttons to boot, just pressed the volume buttons, with/without plugged-in USB cable?
Does ADB/Fastboot/Odin/Heimdall/Smart Switch or anything recognize your device?
Any idea of what had been flashed onto the phone?
Does the battery percentage thingy show up when you plug a charger into the phone?
Have a morning/afternoon/evening.
Cheers
Click to expand...
Click to collapse
Hi,
I have tried every methods that I could think of. I left it drain the battery three days ago and once I plugged in my phone charger and immediately it show this screen. The only way i can do is press vol dwn + power, it rebooted and came back to this screen again. No metter how many times I "reboot" it still come back this.
The last flash i did was used the odin to flashed the Magisk in "AP" cause I lost my root for some reason. I followed Magisk instruction to create a patching tar from the phone itself. Then re-flashed with odin. My Rom was using "N975FXXU6FUCD". After odin prompted "pass" and I left it to reboot. It usually will show this screen a while after rebooted.( normally it'll take around 45 sec to full boot but not this time.) No boot to Android page after left it about 10 minutes thought it still initialize.
I left it almost half an hour and phone still show the bootloader page. What i did was try to reboot or power off by press power button. I couldn't power off it even i hold the button for about 15 sec. Next move I just tried press vol up + power , vol down + power, insert USB plug while holding the vol up + dwn + power. I tried the combination of buttons and last I left it to drain out power.
I'll try if any other suggestions. I don't think there's a reset button unless open out its case..
user109 said:
Hi,
I have tried every methods that I could think of. I left it drain the battery three days ago and once I plugged in my phone charger and immediately it show this screen. The only way i can do is press vol dwn + power, it rebooted and came back to this screen again. No metter how many times I "reboot" it still come back this.
The last flash i did was used the odin to flashed the Magisk in "AP" cause I lost my root for some reason. I followed Magisk instruction to create a patching tar from the phone itself. Then re-flashed with odin. My Rom was using "N975FXXU6FUCD". After odin prompted "pass" and I left it to reboot. It usually will show this screen a while after rebooted.( normally it'll take around 45 sec to full boot but not this time.) No boot to Android page after left it about 10 minutes thought it still initialize.
I left it almost half an hour and phone still show the bootloader page. What i did was try to reboot or power off by press power button. I couldn't power off it even i hold the button for about 15 sec. Next move I just tried press vol up + power , vol down + power, insert USB plug while holding the vol up + dwn + power. I tried the combination of buttons and last I left it to drain out power.
I'll try if any other suggestions. I don't think there's a reset button unless open out its case..
Click to expand...
Click to collapse
Hey there,
With my N10, the combination for getting into Odin-mode is vol-up + vol-down and having a cable plugged in to a computer. Please try "rebooting" your phone (while having it plugged into your computer) and immediately after the screen goes blank, press vol-up + vol-down (without the power button).
I would recommend first trying to flash the full stock ROM (AP, BL and everything else you get) and if it boots, try modding it again.
Have a nice morning/afternoon/evening.
Cheers

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