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"Unfortunately boot failed, get more information..." Message, when I try to enter in

"Unfortunately boot failed, get more information..." Message, when I try to enter in
Hi everyone, just boutht this phone preowned. It works well, but i dont know if the ex-owner modded it bad.
Everytime i try to enter the phone in recovery mode (pressing vol-,vol+ and power) led starts blinking green and red colour, and a screen like this, appear to me:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"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",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I press volume down button to enter in rescue mode, and I get a new screen, it says: PHONE LOCKED (in a green color. Now what does it mean? Bootloader is still locked? Or the phone has problems?) and I cant to connect phone in rescue mode from hisuite.
I have the same problem (the screen I attached, appear to me) not only when i want to go into recovery mode, but also when I charge my phone when it s power off( when i charge it not in power on) or if i want to flash an update.app from local update menu.
What could i do? Im in trouble. Thanks

It seems like recovery is missing. I'd try to flash stock recovery image or twrp (both to be found here in the forum) via adb
Maybe this helps:
http://forum.xda-developers.com/showthread.php?t=2897606

I had the same situation. Just follow procedure that I was recently described here.
Good luck and keep us informed about your progress of getting phone back to life.

Thank you guys, im trying in the next hours. Could you explain me where to get adb? Please

Thank you all! I solved my problem following ur links. I denied root permission for adb , then i put it into fastboot and rescue mode and flashed the recovery.IMG stock through adb. Thanks again.
Mod, please close the thread thx

I'm glad you made it.

i can not access to recovery
Exclamation i can not access to recovery
Hi.
at yesterday ... my phone keeps rebooting and small LEd flashes red in slowly....
i could just flash the fastboot.img via fast boot.
at moment ... i can see that my phone power on and not reboot
and small LED flashes with three green and one red
still ... i can not access to recovery.... i am tried to flash recovery.img via fastboot...
just i can see ... when the phone power on... this page show to me :
http://forum.xda-developers.com/atta...7&d=1413537763
please help me...

I've a similar problem D:
Hi, my P7 after a flash of corrupted file and a reboot it don't turn on again, when i power the screen was black and led blinking Green Red Red Green and system not start, i've tried all the button combination (Vol + Power, Vol - Power, Vol+- Power) but recovery o fastboot not start D: T_T Help me PLEASEEEE :'(
If i put the cable on pc windows know a unknow device named ㄰㌲㔴㜶㤸 but i don't find any driver D: PLEASE HELP ME!!!
Thanks

darklife96 said:
Hi, my P7 after a flash of corrupted file and a reboot it don't turn on again, when i power the screen was black and led blinking Green Red Red Green and system not start, i've tried all the button combination (Vol + Power, Vol - Power, Vol+- Power) but recovery o fastboot not start D: T_T Help me PLEASEEEE :'(
If i put the cable on pc windows know a unknow device named ㄰㌲㔴㜶㤸 but i don't find any driver D: PLEASE HELP ME!!!
Thanks
Click to expand...
Click to collapse
i have this problem too.please help us.is there a way to solve this issue??!!

First of all, install the driver by installing HiSuite.
Second, make sure the USB cable is connected to the PC when you try to enter fastboot (rescue) mode. If the rescue mode is not there, then the last option is to try and force the update with 3 button method, but you must have a SD card for that.

Milan-XDA said:
First of all, install the driver by installing HiSuite.
Second, make sure the USB cable is connected to the PC when you try to enter fastboot (rescue) mode. If the rescue mode is not there, then the last option is to try and force the update with 3 button method, but you must have a SD card for that.
Click to expand...
Click to collapse
Hi Milan-XDA, Could you say how we should do?

wekii said:
I had the same situation. Just follow procedure that I was recently described here.
Good luck and keep us informed about your progress of getting phone back to life.
Click to expand...
Click to collapse
i have the same issue unfortunately boot failed and press the voilume down button for 6 sec if i do that it is fast boot but locked and when i try to flash boot img and recovery the system does not detect my p7

lovenix93 said:
"Unfortunately boot failed, get more information..." Message, when I try to enter in
Hi everyone, just boutht this phone preowned. It works well, but i dont know if the ex-owner modded it bad.
Everytime i try to enter the phone in recovery mode (pressing vol-,vol+ and power) led starts blinking green and red colour, and a screen like this, appear to me: View attachment 2974197
I press volume down button to enter in rescue mode, and I get a new screen, it says: PHONE LOCKED (in a green color. Now what does it mean? Bootloader is still locked? Or the phone has problems?) and I cant to connect phone in rescue mode from hisuite.
I have the same problem (the screen I attached, appear to me) not only when i want to go into recovery mode, but also when I charge my phone when it s power off( when i charge it not in power on) or if i want to flash an update.app from local update menu.
What could i do? Im in trouble. Thanks
Click to expand...
Click to collapse
can you help me out i am also stuck in this situation and whem i try to connect pc adb its did not recognize by pc

[FIX] Fastboot & Rescue Mode Loop/ Locked Bootloader

Meow! Meow!
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"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",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I am CATGEEK, a typical 24-year-old techie-fashionista girl from the Philippines and was a P7 user till yesterday (sold it already). I have been busy lately job hunting why I wasn't able to make this post. I know this is a bit late but I am pretty sure this'll help a lot. How I was able to get a solution was because I too experienced this and I couldn't really trust the service center since I've read some posts somewhere that also had the same problem-- it couldn't be repaired. So my habit whenever I brick my phone is not sleep until I find a fix. I was in the brink of being hopeless and tried to lend money from friends to buy a new phone and just sell the P7 at a lower price since it's declared defective. But I've come to a thread here that I will be sharing with you (it is inside my zip file) and my software repair skills when it comes to android phones that will help you out with this quite complicated issue. It's actually easy but of course you need to go through the process first before concluding that I am right (still to some people, this'll really gonna take their brains out ha ha! like how I did before). So let's get started!
Pre-reqs:
1.Enable USB Debugging but how?
Go to Settings>About phone>Tap "Build number" 5 times then go back to Settings>Developer options>Enable USB Debugging
2.Booting to fastboot but how?
Hold volume down and power button simultaneously until you see a white screen with android logo and "Fastboot & Rescue Mode" here you will also see whether your phone's bootloader is locked or unlocked, so since your prob here is it is locked, we will unlock it, okay?
3.INTACT BRAINS, SO IT WON'T GET OUT WHEN YOU ARE HAVING A HARD TIME
4.BELIEVE IN YOURSELF, HAVE CONFIDENCE!
Note:
Everything is in my zip file. Just click this mediafire link, install necessary files, read manuals and start working on it!
Proper Credits to:
Wekii from XDA Forums
A simple thanks is highly appreciated
​

my huawei is G615-u10 how can i solve fastboot and rescue mode

Would this still require getting the unlock code through Huawei?
Sent from my Nexus 6 using Tapatalk

I cant get to the system, recovery, the force update method wont work and the bootloader is locked. What can I do? I sent a message to huawei asking for the code, but it takes probably weeks to get it(if I should get it). I cant get it on the offical page, I keep getting an error saying 'The Huawei ID used to apply for the unlock code has not been used on the device for more than 14 days.'. Please help!

I followed the steps to fastboot reboot. Now my phone is stuck at the HUAWEI boot logo? Any ideas? I used an official bootloader unlock code from HUAWEI. I know this is an older post, but I'm hoping someone will see this, and be able to help.

HELP!!
My Ascend P7 L07 is bricked! While trying to boot system and recovery i got 3 green leds and 2 red leds and "Boot error" screen appears and fastboot is unnable to flash stock recovery/system/boot img files (Error Command not Allowed), anyone can help me?

I am also having this same problem....I can't get to recovery and I am stuck at FASTBOOT AND RESCUE mode......and USB debugging was disabled ....I can't turn on USB debugging cause my phone can't boot up.......I got this problem while flashing a TWRP recovery ........I ALSO TRIED FORCE UPDATING ANDROID (by downloading stock ROM to SD card and then pressing : vol up+vol down+ power)

Guys......I found the solution..... All u have to do is to download stock ROM of ur huawei device and force update it.....
Step 1: download stock ROM for ur device
Step2: move the ROM to ur SD card in a folder....and rename the folder as " dload"
Step 3: remove battery and press vol up + vol down+ power ......and after 10 sec release the both vol buttons ( DON'T RELEASE POWER BUTTON) afters some time , ur phone should boot into force update

I can confirm that this method worked on my Huawei Y550-L01 that was stuck in Fastboot&Rescue mode.
Thank you!
Peter pan7034779691 said:
Guys......I found the solution..... All u have to do is to download stock ROM of ur huawei device and force update it.....
Step 1: download stock ROM for ur device
Step2: move the ROM to ur SD card in a folder....and rename the folder as " dload"
Step 3: remove battery and press vol up + vol down+ power ......and after 10 sec release the both vol buttons ( DON'T RELEASE POWER BUTTON) afters some time , ur phone should boot into force update
Click to expand...
Click to collapse

nokia 8 stuck at powered by android, please help me .

hello guys , i'm just a newbie and my english is worst , sorry for any mistake that i might make :crying: and thanks for reading my thread
thing is i tried to flash stock rom on my nokia 8 with online service tool (6.0.4) but in the middle of load , the software not responding and after 30 minutes and it said the process was failed
now my nokia 8 stuck at download mode and can't enter recovery mode or boot system ( my computer still be able to detect my phone but in fastboot mode ) , i tried to reflash with online service tool but with newer version (6.1.2) but when " rebooting bootloader " it restart my phone and it's still stuck at download mode and on computer it's said ht-tps://imgur.com/PDvUDfM now my phone look like this ht-tps://imgur.com/a/QFfZu ( sorry i'm new register , so i can't upload the picture =(( )
i tried QFIL but it cannot detect the port and said " no port" , installed driver but i still can't detec the port
thanks again for reading my post , and please help me =(( i contacted the nokia support and they told me to take the phone to repair center , and when i take to repair center , they said that i need to change my mainboard because it's dead or broken something like that , i just bought this phone a week .

Exactly the same occurred to my Nokia 6. Trying to hard-reset it I began playing with the vol and power keys, with and without the USB charger cable, and now it shows just a blue light or led at the upper left corner.

What ur model ? Only 1052 can use ost tool.
Are u see the tool flash partion system ?
Are u use edit firmware method ?
For easy guild... Use ntool with donate money.
Or.... Fasstbooot flash all file in firmware.

I had the similar boot problem. After my phone discharging i connect to charger and phone stuck on that message : Yourd device cant be checked for corruption. I have unlocked bootloader and installed android pie latest.
Is there any hope people or phone i dead?
I cant boot in download mode via fastboot cause i get message : no emulators found. How to solve that?
Is there any hope?

Anybody people?

How to turn off phone people?!! Its impossible it cant turf off!

Allek84 said:
How to turn off phone people?!! Its impossible it cant turf off!
Click to expand...
Click to collapse
Hold the volume keys and power key at the same time for as long as u can....maybe even a few minutes until it shuts down. If all else fails let it drain then boot to recovery and gfix whatever caused the boot hang

Its drained just before 30 minutes, and now the view is that
I cant boot to recovery neither to dowload
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"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",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Sent from my Nokia 7 plus using Tapatalk

MDV106 said:
Hold the volume keys and power key at the same time for as long as u can....maybe even a few minutes until it shuts down. If all else fails let it drain then boot to recovery and gfix whatever caused the boot hang
Click to expand...
Click to collapse
You are king thanks a lot i got it.
I must to press and hold every 3 keys(volume up,down and power) for few minutes and phone turn off. After that i could enter in recovery
Thanks again.
Sent from my Nokia 7 plus using Tapatalk

Allek84 said:
You are king thanks a lot i got it.
I must to press and hold every 3 keys(volume up,down and power) for few minutes and phone turn off. After that i could enter in recovery
Thanks again.
Click to expand...
Click to collapse
Glad I could help :good:

Hi everyone!
I've got similar problem to that. My device shows: "Your device can’t be checked for corruption. Please lock the bootloader”. I tried to fix that with OST, but no succes - critical unlock is neccesary. I've flashed with OST 6.04, 6.12, NOST 0.6, but nothing works. Also the ADB and QFIL can't see the device, so I can not critical unlock bootloader. In the device manager, phone is seen as ADB Interference -> fastboot Device, and after installing google driver as Android ADB Interference. Recovery and fastboot modes don't work, download mode works only after connecting with OST. I tried holding 3 keys, but phone turns off after about 20s and nothing happen - I can't enter recovery. I bought this device recently and some time later after turning on it showed that statement. The varranty has expired, so I can't send it to service.
I hope you can help me.

porsche96 said:
Hi everyone!
I've got similar problem to that. My device shows: "Your device can’t be checked for corruption. Please lock the bootloader”. I tried to fix that with OST, but no succes - critical unlock is neccesary. I've flashed with OST 6.04, 6.12, NOST 0.6, but nothing works. Also the ADB and QFIL can't see the device, so I can not critical unlock bootloader. In the device manager, phone is seen as ADB Interference -> fastboot Device, and after installing google driver as Android ADB Interference. Recovery and fastboot modes don't work, download mode works only after connecting with OST. I tried holding 3 keys, but phone turns off after about 20s and nothing happen - I can't enter recovery. I bought this device recently and some time later after turning on it showed that statement. The varranty has expired, so I can't send it to service.
I hope you can help me.
Click to expand...
Click to collapse
Try to unlock bootloader after connect to download mode with OST(if is somehow possible)unlock him then download Nougat or Oreo firmware only from here and try to flash with OST or NOST,butt preffered NOST.
https://tpedutw-my.sharepoint.com/p...CTID=0x0120007F0E21D15C09464184D190CC235B0516

[HELP] Did i killed my SP?!

Friends, i think i did something really wrong..
I have this sony sp for a long time broken, but i fixed the screen and give it a chance to come back to life.. But i dont like the OLD android, and tried to install OREO on it... i remember it has already unlocked bootloader. So i installed twrp using adb commands, and could get into the TWRP ... so i just did a wipe system, cache ... bla bla bla..... but it was on stock rom... never flashed any rom on it before... so.... the rom didnt installed fine... got error
but the big big problem, i cant get into fastboot mode or flashmode... everytime i got into one of those, i got onlu for a few seconds and got a sony logo and cant do anything....
i tried to install the drivers again using flashtools drivers, and the driver wont install... i am on Windows 10 and dont know what to do ( i can install other drivers like sony z1 it Works fine)
tried to install it from device manager (my computer, add legacy hardware)
nothing seems to work... what i wanted to do is... get into flashmode, to install the stock ftf on it .... but it get only for 10 seconds, after that, sony logo and stuck...
heeelp me guys

are you sure it's battery is not very low?

Omg, just install flashmode drivers

did you keep pressing buttons after succesfully put your device into fastboot or flash mode?

Thanks for answering me :
1 - When i started to try to flash the rom, it was at 90% of battery
2 - I noticed that i was having problem to put it in fastboot mode and flashmode , somehow i could install TWRP using ADB commands.
3 - My phone was already getting recognized by xperia companion
4- when i got the problem try to flash ftf back but i am getting a loop, device disconnected and in flash mode... just blinking
5- TRY TO INSTALL Flashtool drivers in flashtool folder, but , when i choose, FLASHMODE and FASTBOOT MODE, and choose the "VISKIAN BOARD" that says the chipset for XPERIA SP i got this :
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"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",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Tried to test it on a Windows 7 machine, and i got only fastboot mode on it... it Works in the fastboot mode... but flashmode still blinking, unstable....

LinkRaf said:
Tried to test it on a Windows 7 machine, and i got only fastboot mode on it... it Works in the fastboot mode... but flashmode still blinking, unstable....
Click to expand...
Click to collapse
so now you can flash kernel .elf via fasboot, williams kernel has TWRP (AFAIK) so you can flash any ROM zip

cipetonk said:
so now you can flash kernel .elf via fasboot, williams kernel has TWRP (AFAIK) so you can flash any ROM zip
Click to expand...
Click to collapse
Where i find it? When i flash the kernel.elf via fastboot. What happen next? power+volume up to get into TWRP?

LinkRaf said:
Where i find it? When i flash the kernel.elf via fastboot. What happen next? power+volume up to get into TWRP?
Click to expand...
Click to collapse
https://forum.xda-developers.com/showthread.php?t=2750392
extract .zip to get .elf, and read the kernel FAQ to know more about recovery buttons, I have quite forgotten, it's very old kernel

cipetonk said:
https://forum.xda-developers.com/showthread.php?t=2750392
extract .zip to get .elf, and read the kernel FAQ to know more about recovery buttons, I have quite forgotten, it's very old kernel
Click to expand...
Click to collapse
Thank you. I am finally have some action on my screen now and i thank you so much.... But i am trying to flash a rom and it wont flash.
I tried aosp oreo rom... and i cant get the log file, but it says this: ( am going really to type it)
Finding update packages
Opening update package
Installing update
Warning No file_contextsE3004 This package is for device C5302 C5303 C5306 huashan this device is E unknown command LOG
Error in storage sd card aosp-8.1.0
status 7)
aborted
EDIT >>>> I COULD MAKE IT WORK HAHAHA, FLASHED THE LINEAGE VERSION!! now i have to find the gapps
THANK YOU THANK YOU THANK YOU!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
THAT KERNEL SAVED MY SP LIFE!!!!!!!!!!!!!!!!!!!!!!
-----------------------------------------------------
ONE MORE QUESTION , GUYS
Any ideas why Windows 10 wont install fastboot and flash mode for the viskian driver? I have a Xperia Z1 and i installed it normally... i have fastboot and flashmode for xperia z1... but Even now, with my xperia sp working
getting recognized by xperia companion.... When i turn off the phone, power up + usb cable... it turns the blue light on, for like, 5 seconds, and i got the sony logo and starts to charge my device....
i really wanted to solve this problem, because, to use Windows 7 i have to use an old Hard Drive of mine here....

Bootloader relock after Bootloader was unlocked? & Boot Warning Screen Removal?

Hi Guys,
So i rooted my S10 and got TWRP installed.
But for me it is still unclear, what to do about the first message, that appears when you restart your phone.
Here:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"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",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Any Way to remove that?
And also I hear from people they somehow relock their bootloader again.
Didn't understand this step for now or what the use of this was? Maybe someone explain please, so it is clear for everyone.
But when I try this > Start Phone in Recovery > Hold Volume Up to Device Lock Option > Lock the Bootloader & Factory Reset >
it just brings me here and after that it does nothing!
Here - see top left.
it says:
>
VBMETA: Error verifiing vbmeta Image: OK_NOT_SIGNED (3)
CUSTOM VBMETA
VBMETA: No sign Info
VBMETA ,
<
Question 1: Is there a Way to remove the Startscreen Warning?
Question 2: What is the use of relocking the bootloader and how is it properly possible?
Hope this Thread brings some clear view on this.

||||| said:
Hi Guys,
So i rooted my S10 and got TWRP installed.
But for me it is still unclear, what to do about the first message, that appears when you restart your phone.
Here:
Any Way to remove that?
And also I hear from people they somehow relock their bootloader again.
Didn't understand this step for now or what the use of this was? Maybe someone explain please, so it is clear for everyone.
But when I try this > Start Phone in Recovery > Hold Volume Up to Device Lock Option > Lock the Bootloader & Factory Reset >
it just brings me here and after that it does nothing!
Here - see top left.
it says:
>
VBMETA: Error verifiing vbmeta Image: OK_NOT_SIGNED (3)
CUSTOM VBMETA
VBMETA: No sign Info
VBMETA ,
<
Question 1: Is there a Way to remove the Startscreen Warning?
Question 2: What is the use of relocking the bootloader and how is it properly possible?
Hope this Thread brings some clear view on this.
Click to expand...
Click to collapse
This Download screen is waiting for you to connect to your computer and fire up Odin and flash stock firmware.
See my post here:
https://forum.xda-developers.com/ga...bootloader-t3927663/post79698366#post79698366

robbo1947 said:
This Download screen is waiting for you to connect to your computer and fire up Odin and flash stock firmware.
See my post here:
https://forum.xda-developers.com/ga...bootloader-t3927663/post79698366#post79698366
Click to expand...
Click to collapse
Thanks your post was very useful!
After I flashed stock firmware again - do I still have TWRP then?
Scenario 1. Your phone is rooted with Magisk.
Go into Developers options and check OEM options, the switch must be ON (to the right). If it isn't turn it ON.
Turn off your phone. Press and hold the Bixby and Volume-down button, then connect with USB to your computer. (The cable shouldn't be connected until after you press the buttons).
Within seconds of USB connection the Download screen will appear. You will see 3 optiions, choose and Long press volume up and hold button until you see the 2 options at bottom of screen. Choose and hold volume up until screen goes off. Then the S10 logo screen will briefly apppear, before it flicks back to the Download screen with the words 'VBMETA: Error verifying vbmeta image etc' at the top, as the image below.
This is all good so far. Leave the phone exactly as it is with this screen showing and make sure the phone is still connected to the computer.
On your computer, fire up Odin3_v3.13.1, you can leave the Reboot option in Odin ticked. Locate your firmware on your computer and put the 4 file parts (BL, AP. CP and CSC) into Odin.
Let Odin finish.
The phone will reboot ready for setup.
The Unlocked bootloader warning screen will be gone.
Click to expand...
Click to collapse
But why should we relock the bootloader in the first place?
Only so we don't have the bootscreen-warning anymore?
Or does it have some other purpose as well?
And I see what I was stuck at, I didn't flashed the stock firmware, but tried to flash the patched stock rom again.
Because the bootloader was locked, It stuck at the flashing process everytime. So thats basically why this thread was created to bring some clarity about this.

||||| said:
Thanks your post was very useful!
After I flashed stock firmware again - do I still have TWRP then?
But why should we relock the bootloader in the first place?
Only so we don't have the bootscreen-warning anymore?
Or does it have some other purpose as well?
And I see what I was stuck at, I didn't flashed the stock firmware, but tried to flash the patched stock rom again.
Because the bootloader was locked, It stuck at the flashing process everytime. So thats basically why this thread was created to bring some clarity about this.
Click to expand...
Click to collapse
To remove the warning screen and be rooted flash Soldier's Splash Screen Changer.

ExtremeGrief said:
To remove the warning screen and be rooted flash Soldier's Splash Screen Changer.
Click to expand...
Click to collapse
Great Tip! Thanks
Soldier's Splash Screen Changer

re-lock Samsung S20 OEM after flashing
For those who may still be interested in knowing the EASY way of doing this:
This is what i did for the S20 (snapdragon)
After flashing stock firmware, the bootloader (OEM) stays unlocked, meaning that things like GooglePay and some bank apps wont work. The way to fix this is by re-locking the oem after you have flashed your new stock rom. Here are the steps to do that (since it took me a while to figure out and there is hardly any info online) - bear in mind this works if you have NOT tripped Knox and its using a stock rom and do these steps at your own risk - always have a backup just in case:
How to re-lock bootloader (for S20):
1. Turn off your device.
2. Press Volume down + volume up and insert usb cable to your phone to start the download mode
3. Read the text below on the Download Mode screen
to block or unblock the Bootloader.
4.- Long press the vol (+) button to enter unlock mode.
LOCK BOOTLOADER SCREEN:
5. Read the 2 options available, one will say to lock the lock the bootloader, the other to lock. Press the relevant volume button (was down on mine) until the phone restarts (this will erase your data and restart automatically).
6. Go into developer mode and then uncheck the unlocked oem option, restart your phone.
That's it! Now you have a device with an OEM locked, so everything will work as expected, again, as long as its a stock rom and you have NOT tripped Knox by root etc.

Hello,
Can you tell me how did you escape the downloading window (after you tried to re-lock the bootloader). Mine seems to have stuck and I tried to long press Vol Down and Power button, but the phone reboots and comes to this screen again.
I also tried to flash a few rom, but everytime it was blocked by OEM lock. I am not sure what was the CSC of the phone (as I bought it from someone who is now not in my contact). Is there any way I can find the stock rom with limited information?
My phone is Samsung SM-G977B (5G). I just know that it is a european version.
Any ideas?

masrhad said:
Hello,
Can you tell me how did you escape the downloading window (after you tried to re-lock the bootloader). Mine seems to have stuck and I tried to long press Vol Down and Power button, but the phone reboots and comes to this screen again.
I also tried to flash a few rom, but everytime it was blocked by OEM lock. I am not sure what was the CSC of the phone (as I bought it from someone who is now not in my contact). Is there any way I can find the stock rom with limited information?
My phone is Samsung SM-G977B (5G). I just know that it is a european version.
Any ideas?
Click to expand...
Click to collapse
See my post here:
https://forum.xda-developers.com/ga...bootloader-t3927663/post79698366#post79698366