Galaxy A8 2018 can't boot anymore - Android Q&A, Help & Troubleshooting

So today I finally got notification for Oreo update on my Galaxy A8 2018 version.
I updated it via Smart Switch with original USB cable from Samsung, but after update was done, my phone was stuck at reboot mode.
It just keeps rebooting all the time, and even after 1 hour of reboots, it doesn't do anything usefully.
I went to recovery mode, where it still says it's android 7.1.1 firmware … I tried to wipe cache partition and that didn't help at all.
Next step was apply update from SD card but that just returns me errors: E:footer is wrong, E:Signature verification failed and E:failed to to find misc partition.
I tried to wipe all data/factory reset, but that didn't help either.
I can't start it download mode to use Odin, and smartswitch doesn't see my phone either.
I have no idea what else to do

Hi , let your battery to be completely empty , put in charger for about 2 hours don't power On!
After that take out the charger hold at the same time Vol - , home and Power taster , but to skip reboots , try when you hold those 3 buttons to press fast couple of times Vol - while you are holding other two buttons . If you are able to go into Download mode reflash the same firmware version Android 7.1.1 .

It turns out, that I was able to get in download mode, but I had to press volume up + volume down + power button all at the same time.
After that I was able to flash my device with stock 7.1.1 Android. After that was a success, I tried to update to Oreo again via Smart Switch … again same problem and phone would boot.
Then I downloaded Oreo firmware for my phone, and tried to flash it. It wasn't working at all. Program finished in 4 sec, and phone was stuck back at reboot.
After banging my head against the wall, I found some article on web, that this is a know issues for Odin 3.1.2 version, and that 3.1.3 version is working.
So I was finally able to flash my phone with Oreo Android, using Odin 3.1.3 version …. flashed my device at least 7 times before I got result that I wanted.
I still lost all my data, since I didn't have any backups enabled. This time I'm downloading all my apps, and do all customization, and then I'm making backup, so I won't be stuck with that problem once again.
Sometimes I regret going from iOS to Android, and next phone will probably be iPhone for me.

Teddy Lo said:
Hi , let your battery to be completely empty , put in charger for about 2 hours don't power On!
After that take out the charger hold at the same time Vol - , home and Power taster , but to skip reboots , try when you hold those 3 buttons to press fast couple of times Vol - while you are holding other two buttons . If you are able to go into Download mode reflash the same firmware version Android 7.1.1 .
Click to expand...
Click to collapse
Can we get a translator here so I can understand what the [email protected] you're saying please? Its bad enough I've been dealing with this goddam boot loop for hours and hours but now I can't even get an answer I can understand ****!

Related

Entering recovery and weird message

Is it possible to enter recovery mode without root?
I've got an issue with my S3 whereby every time it reboots it comes up with the message unable to download please try again later. Then it'll randomly freeze or reboot. So after trying a few different things I've decided to wipe the cache partition, however I can't enter recovery mode. I've tried holding down volume up, home and power and the android image briefly flashes up but if I release the buttons it just boots up, if I keep them held it just power cycles continuously.
Also I tried holding down volume down, home and power and got a strange message warning of the perils of installing a custom OS and asking if I wanted to go ahead, I didn't. Is this message normal or is my phone trying to do something weird? Thanks.
Release the buttons as soon as you see the recovery, don't hold them. Also, a custom recovery would help
Just managed to do it thanks. However wiping the cache has made no difference to my issue. The only option it leaves is a factory reset and failing that exchanging it for a new phone.
Zammo76 said:
Is it possible to enter recovery mode without root?
>>>Yes stock recovery
I've got an issue with my S3 whereby every time it reboots it comes up with the message unable to download please try again later.
>>> Reads as an OTA update that is stuck .
Also I tried holding down volume down, home and power and got a strange message warning of the perils of installing a custom OS and asking if I wanted to go ahead, I didn't. Is this message normal or is my phone trying to do something weird? Thanks.
That is 100% normal in Download mode ..
You can try an Update via Kies .Try Factory reset .
Read the basics .
http://forum.xda-developers.com/showthread.php?t=1927113
jje
Click to expand...
Click to collapse

[Q] unable to enter download mode

My phone is an S3 i9300. Some weeks ago I installed an XXUGMK6 Android 4.3 version. At that time I was directed to an East European site (Russian?) which had one of the first releases. Everything have worked ok until I decided to try another ROM (Slimrom). I enabled USB debugging and tried to restart the phone in download mode (Power+Home+volume down buttons) to start the rooting process. I arrive at a screen saying:
Warning!!
A custom OS can cause critical problems in phone and installed applications.
If you want to download a custom OS, press the volume up key.
Otherwise, press the volume down key to cancel.
If I press the volume up key it apparantly starts downloading (text on screen: Downloading. Don't switch off your Phone). Nothing more happens even after almost 3 hours, and I have to force restart the phone.
I have tried to factory reset the phone, but it is still impossible to past the Warning!! screen.
Any suggestions on how to solve the problem are much appreciated.
tskjaerpe said:
My phone is an S3 i9300. Some weeks ago I installed an XXUGMK6 Android 4.3 version. At that time I was directed to an East European site (Russian?) which had one of the first releases. Everything have worked ok until I decided to try another ROM (Slimrom). I enabled USB debugging and tried to restart the phone in download mode (Power+Home+volume down buttons) to start the rooting process. I arrive at a screen saying:
Warning!!
A custom OS can cause critical problems in phone and installed applications.
If you want to download a custom OS, press the volume up key.
Otherwise, press the volume down key to cancel.
If I press the volume up key it apparantly starts downloading (text on screen: Downloading. Don't switch off your Phone). Nothing more happens even after almost 3 hours, and I have to force restart the phone.
I have tried to factory reset the phone, but it is still impossible to past the Warning!! screen.
Any suggestions on how to solve the problem are much appreciated.
Click to expand...
Click to collapse
Please do not post twice look at your other post...

Phone possibly bricked, any and all assistance is appreciated.

Hello,
I was recently on the Oreo Beta for the Note 8, and because somethings were not working properly I was trying to revert back to nougat. I downloading Odin 3.12.7 and the firmware from SamFirm. While flashing the files I got a message on Odin saying something along the lines of "Operation completed (could not write) success 0 failed 1". After that I am unable to get past the Samsung Galaxy Note screen, and when I power down using Volume Down and Power i get into some menu that says "Upload mode: Unknown Error" and I can't do anything from there. I can get back in to Download mode but Odin pulls up just a "all threads complete Success 0 Failed 1." Otherwise I can do volume down and Power and get back to the same Samsung Galaxy Note screen. Is there any way I can fix this?
Thanks
Try factory reset using power, volume up and Bixby button
PapaMag said:
Try factory reset using power, volume up and Bixby button
Click to expand...
Click to collapse
I've tried, but the phone won't power off completely. If it's in the Samsung logo screen, I hold down Volume Down + Power and it restarts, if I immediately hold down volume down + power + bixby it goes into download mode, but it won't go into recovery if I do Volume up instead.
Metalero9389 said:
I've tried, but the phone won't power off completely. If it's in the Samsung logo screen, I hold down Volume Down + Power and it restarts, if I immediately hold down volume down + power + bixby it goes into download mode, but it won't go into recovery if I do Volume up instead.
Click to expand...
Click to collapse
Wow I've had devices that wouldn't turn on but never one that wouldn't turn off. Mayby a complete battery drain will get you there.
PapaMag said:
Wow I've had devices that wouldn't turn on but never one that wouldn't turn off. Mayby a complete battery drain will get you there.
Click to expand...
Click to collapse
Yeah I let it die, and the same thing I tried Odin again and it failed. And it just wont go into recovery. It can still go into download mode, but other than that it's just the Samsung logo. I might just take it into tmobile and see about getting it exchanged. Thanks though.
Hey i had the same issue I am on bqk2 just hold volume down and power for like 5mins then should go to download mode but Odin recognizes upload mode and flash the bkq2 firmware I stopped toying with it but was thinking of going back to oreo just read everything because I thought I made a paper weight I flashed the day after it was released and took me about a day (didn't have internet had to get to pc To download the original files as I reset my storage trying to downgrade
Feel free to email me [email protected] I made an account to help
Kinghamm said:
Hey i had the same issue I am on bqk2 just hold volume down and power for like 5mins then should go to download mode but Odin recognizes upload mode and flash the bkq2 firmware I stopped toying with it but was thinking of going back to oreo just read everything because I thought I made a paper weight I flashed the day after it was released and took me about a day (didn't have internet had to get to pc To download the original files as I reset my storage trying to downgrade
Feel free to email me [email protected] I made an account to help
Click to expand...
Click to collapse
Thanks for the feedback, my internet crapped out and without my phone I was having issues getting online. But I just went to Tmobile and told them my phone woke up like that and they exchanged it. Thank you for the information though, hopefully if anyone has the issue they can try your method to get back up and running.
Metalero9389 said:
Thanks for the feedback, my internet crapped out and without my phone I was having issues getting online. But I just went to Tmobile and told them my phone woke up like that and they exchanged it. Thank you for the information though, hopefully if anyone has the issue they can try your method to get back up and running.
Click to expand...
Click to collapse
Glad it all worked out I wasn't sure if they would accept it so if anyone else has issues id love to help I'm back on oreo

Tab S6 stuck in bootloop, can't get to recovery mode

My Tab S6 tried to auto-install an update yesterday (it is rarely connected to Wifi/internet). It then rebooted. Since then, it's been stuck in a boot loop.
It will display the "Samsung Galaxy Tab S6 | Secured By Knox" logo screen for a few seconds, then switch to the blue "Installing System Update" screen (with the android logo). Installing System Update gets to 28% and stops. Then the rotating icon on the android freezes. Then the device reboots and starts all over again.
Edit: the tablet is 100% stock. It's not been rooted or had any custom ROMs loaded.
I have tried getting to recovery mode, by holding power+volup while it boots. This doesn't seem to change the behavior at all. Any advice is much appreciated.
Fedge7 said:
My Tab S6 tried to auto-install an update yesterday (it is rarely connected to Wifi/internet). It then rebooted. Since then, it's been stuck in a boot loop.
It will display the "Samsung Galaxy Tab S6 | Secured By Knox" logo screen for a few seconds, then switch to the blue "Installing System Update" screen (with the android logo). Installing System Update gets to 28% and stops. Then the rotating icon on the android freezes. Then the device reboots and starts all over again.
Edit: the tablet is 100% stock. It's not been rooted or had any custom ROMs loaded.
I have tried getting to recovery mode, by holding power+volup while it boots. This doesn't seem to change the behavior at all. Any advice is much appreciated.
Click to expand...
Click to collapse
can you shut it down? try volume down and power button ? if it don't shut down, do this soon as it reboots, hold volume up and down and plug in usb cable to desktop/laptop usb port! it will boot into download mode!
N1NJATH3ORY said:
can you shut it down? try volume down and power button ? if it don't shut down, do this soon as it reboots, hold volume up and down and plug in usb cable to desktop/laptop usb port! it will boot into download mode!
Click to expand...
Click to collapse
I can't actually shut it down. If I start holding power+voldown right after it boots, the tablet does reboot before getting stuck at 28%. But it reboots--it doesn't power off.
I tried download mode and that actually seemed to work! Specifically, I left the tablet overnight in the reboot loop until the battery drained. Just now, I held down volup+voldown and plugged it into my laptop. I got the green "Warning/Custom OS" screen and then pressed volup to continue. The tablet rebooted pretty quickly after that (I'm guessing due to low battery) so I didn't get a good look at the download mode options.
Once I'm in download mode, can I factory reset the tablet? I don't need to preserve any data/apps/settings.
Fedge7 said:
I can't actually shut it down. If I start holding power+voldown right after it boots, the tablet does reboot before getting stuck at 28%. But it reboots--it doesn't power off.
I tried download mode and that actually seemed to work! Specifically, I left the tablet overnight in the reboot loop until the battery drained. Just now, I held down volup+voldown and plugged it into my laptop. I got the green "Warning/Custom OS" screen and then pressed volup to continue. The tablet rebooted pretty quickly after that (I'm guessing due to low battery) so I didn't get a good look at the download mode options.
Once I'm in download mode, can I factory reset the tablet? I don't need to preserve any data/apps/settings.
Click to expand...
Click to collapse
You cannot reset the tablet from Download mode afaik- You need to enter Recovery Mode to do that.
You can however, flash stock from Download mode using Odin (3.13.3 is best). If you're not confident with doing that, your best option is Factory Reset in Recovery Mode. Hold Volume Up and Power when the Tablet is booting, let go when you see the Samsung logo. The timing can be tricky, but you should be able to do it. Also, you can force a reboot with Volume Down and Power.
Alternatively, if factory reset doesn't work, since you're completely stock, you will still be covered under warrenty.
bartleby999 said:
your best option is Factory Reset in Recovery Mode. Hold Volume Up and Power when the Tablet is booting, let go when you see the Samsung logo.
Click to expand...
Click to collapse
Thanks for the suggestion. I have tried this many many times. I've tried letting go of the buttons at different times. I've tried holding volup while letting go of power. I've tried this a ton of different ways, and no matter what, the tablet always shows the "Installing system update" screen. Some googling has led me to believe that sometimes, when performing a factory reset, the "Installing system update" screen shows up right before the normal recovery screen. Is it possible that the tablet is trying to get to recovery mode, but can't get past this first step?
Fedge7 said:
Is it possible that the tablet is trying to get to recovery mode, but can't get past this first step?
Click to expand...
Click to collapse
Honestly, I don't know - I'm not an expert but I guess it's possible that the update failed and corrupted both System and Recovery.
You'll be covered under warrenty, so maybe just return the Tablet from where you purchased or direct to Samsung, could take a while given the current situation though I guess. If you have a PC, then I think the best option would be to just flash stock yourself, since that's probably all Samsung will do. Even if that doesn't work you'd still be covered under warrenty, as far as I'm aware attempting to flash stock doesn't trip Knox.
Here is solution to unbrick your device!!!
Fedge7 said:
My Tab S6 tried to auto-install an update yesterday (it is rarely connected to Wifi/internet). It then rebooted. Since then, it's been stuck in a boot loop.
...
Edit: the tablet is 100% stock. It's not been rooted or had any custom ROMs loaded.
I have tried getting to recovery mode, by holding power+volup while it boots. This doesn't seem to change the behavior at all. Any advice is much appreciated.
Click to expand...
Click to collapse
Despair not...I have just come from resolving this exact situation not 30 minutes ago. I'd been trying to flash (using Odin as I decided to stay on Stock and not root this device, for a change) the latest OneUI2.1 releases for my device (SM-T865 - LTE version) and boom in the middle of the Odin update, the flash just failed...I then couldn't reboot and get into neither Recovery, nor Download Mode because it appears my bootloader and recovery both got corrupted.
Here's what you need....
1. Odin app for PC (am on Windows)
2. Your device's Stock firmware (sammobile firmware archive)
3. You will need someone to help you boot the device directly into Download mode (and this is the tricky part because for most of us we are used to get into Bootloader by using the key combination (from Powered Off device) Vol+ and Power On at the same time to get into stock recovery and then scrolling down to option 2 in this menu, "Reboot to Bootloader". Well now you are going to boot directly into Bootloader mode. Here's how you do it...
4. Get your friend to line up the USB-C cable into the port of the device, but DO NOT press it in...yet
5. Press Power off and Vol- buttons at the same time to turn off the device
6. And now you have to to be super fast: if device starts to turn on on its own, YOU press and hold Vol+ and Vol- both at the same time while YOUR FRIEND pushes the USB cable fully into the port - you should now have booted directly into Download mode. (if not repeat this, and remember to be super fast and sync with your friend pushing in the USB cable)...
7. When you get into Download mode, then you are home and dry...
8. Select ONLY the Bootloader file (BL...XX...) in Odin, make sure only "reset time" and "reboot" are ticked, and flash
9. When device reboots, press Vol+ and Power combo to get back into Bootloader mode again...but I think device will reboot into Download mode on its own
10. Now select all the files from your Stock file into the various tabs (BL, CP, CSC, AP...) do not select HOME_CSC as we want to flush this device clean...
11. Flash, and voila...success - you will have lost all your data but rather that than losing the device...
12. Feedback here and let us know if this works? For reference for others in the future...
FYI, I got in this situation, and the previous post did work for me, just takes good timing! Thanks!!!!
Same issue today for me. My tablet showed different screen with green and red text, it allowed me to delete app data, then booted into safe mode, then i had to do factory reset and now i am screwed, as it is refusing to restore any apps and their settings. I will try to flash it back to Android 9, maybe then it will do the restore. I forgot to do any manual backup to SD or so.
Edit: the device upgraded to 10, but reset itself after about 10 minutes of use.
Edit2: i found what caused it. It is caused by Nova Launcher, if i try to set wallpaper.
Just found a news article that there is a RGB/sRGB problem with wallpapers. It might be the problem i had.
I am adding a screenshot of the result.
Yeah, I had that kind of reboot loop from a wallpaper that I downloaded
Moe5508 said:
Here is solution to unbrick your device!!!
Despair not...I have just come from resolving this exact situation not 30 minutes ago. I'd been trying to flash (using Odin as I decided to stay on Stock and not root this device, for a change) the latest OneUI2.1 releases for my device (SM-T865 - LTE version) and boom in the middle of the Odin update, the flash just failed...I then couldn't reboot and get into neither Recovery, nor Download Mode because it appears my bootloader and recovery both got corrupted.
Here's what you need....
1. Odin app for PC (am on Windows)
2. Your device's Stock firmware (sammobile firmware archive)
3. You will need someone to help you boot the device directly into Download mode (and this is the tricky part because for most of us we are used to get into Bootloader by using the key combination (from Powered Off device) Vol+ and Power On at the same time to get into stock recovery and then scrolling down to option 2 in this menu, "Reboot to Bootloader". Well now you are going to boot directly into Bootloader mode. Here's how you do it...
4. Get your friend to line up the USB-C cable into the port of the device, but DO NOT press it in...yet
5. Press Power off and Vol- buttons at the same time to turn off the device
6. And now you have to to be super fast: if device starts to turn on on its own, YOU press and hold Vol+ and Vol- both at the same time while YOUR FRIEND pushes the USB cable fully into the port - you should now have booted directly into Download mode. (if not repeat this, and remember to be super fast and sync with your friend pushing in the USB cable)...
7. When you get into Download mode, then you are home and dry...
8. Select ONLY the Bootloader file (BL...XX...) in Odin, make sure only "reset time" and "reboot" are ticked, and flash
9. When device reboots, press Vol+ and Power combo to get back into Bootloader mode again...but I think device will reboot into Download mode on its own
10. Now select all the files from your Stock file into the various tabs (BL, CP, CSC, AP...) do not select HOME_CSC as we want to flush this device clean...
11. Flash, and voila...success - you will have lost all your data but rather that than losing the device...
12. Feedback here and let us know if this works? For reference for others in the future...
Click to expand...
Click to collapse
Bravo!!
Works for me.
Many thanks
I can get into download mode. But it kicks me out within a few seconds. Any help please
Moe5508 said:
Here is solution to unbrick your device!!!
Despair not...I have just come from resolving this exact situation not 30 minutes ago. I'd been trying to flash (using Odin as I decided to stay on Stock and not root this device, for a change) the latest OneUI2.1 releases for my device (SM-T865 - LTE version) and boom in the middle of the Odin update, the flash just failed...I then couldn't reboot and get into neither Recovery, nor Download Mode because it appears my bootloader and recovery both got corrupted.
Here's what you need....
1. Odin app for PC (am on Windows)
2. Your device's Stock firmware (sammobile firmware archive)
3. You will need someone to help you boot the device directly into Download mode (and this is the tricky part because for most of us we are used to get into Bootloader by using the key combination (from Powered Off device) Vol+ and Power On at the same time to get into stock recovery and then scrolling down to option 2 in this menu, "Reboot to Bootloader". Well now you are going to boot directly into Bootloader mode. Here's how you do it...
4. Get your friend to line up the USB-C cable into the port of the device, but DO NOT press it in...yet
5. Press Power off and Vol- buttons at the same time to turn off the device
6. And now you have to to be super fast: if device starts to turn on on its own, YOU press and hold Vol+ and Vol- both at the same time while YOUR FRIEND pushes the USB cable fully into the port - you should now have booted directly into Download mode. (if not repeat this, and remember to be super fast and sync with your friend pushing in the USB cable)...
7. When you get into Download mode, then you are home and dry...
8. Select ONLY the Bootloader file (BL...XX...) in Odin, make sure only "reset time" and "reboot" are ticked, and flash
9. When device reboots, press Vol+ and Power combo to get back into Bootloader mode again...but I think device will reboot into Download mode on its own
10. Now select all the files from your Stock file into the various tabs (BL, CP, CSC, AP...) do not select HOME_CSC as we want to flush this device clean...
11. Flash, and voila...success - you will have lost all your data but rather that than losing the device...
12. Feedback here and let us know if this works? For reference for others in the future...
Click to expand...
Click to collapse
Hi,
Really need your help, after I updated my firmware using Odin, updated BL, AP, CP, CSC, my tab cannot boot up stuck in logo. Doing the Power + volume up leads me to different screen now. I cannot access recovery mode or download page anymore,
What must I do? Pleasssee help. Added the pic, after doing hard reset (power + vol up)
I cannot connect back to Odin also. Always setup connection failed.
Please help. Really messed up big time
Just a thought... Can this be restored from service center?
Thank you in advance.
I have the same problem with a Tab S6 Lite, it is in bootloop and does not let me enter the recovery mode, I can go into download mode and I flashed the latest original firmware Android11, Android10 etc., . I tried them all but always goes in bootloop, and also the bootloop occurs only if I connect the usb cable to the PC, without any sign of life. Do I still have hopes or have I compromised the motherboard?
The reason for all this is because I had followed a guide to give root permissions with magisk, I did everything right, only that the guide was with Android10, while I had Android11 and I was deceived by the fact that in the title of the guide there was written "guide 2021"
, so I did not check the compatibility of operating systems, I was a fool, I know, I hope so much that I did nothing irretrievable, it's my son's tablet!
Genpis said:
I have the same problem with a Tab S6 Lite, it is in bootloop and does not let me enter the recovery mode, I can go into download mode and I flashed the latest original firmware Android11, Android10 etc., . I tried them all but always goes in bootloop, and also the bootloop occurs only if I connect the usb cable to the PC, without any sign of life. Do I still have hopes or have I compromised the motherboard?
The reason for all this is because I had followed a guide to give root permissions with magisk, I did everything right, only that the guide was with Android10, while I had Android11 and I was deceived by the fact that in the title of the guide there was written "guide 2021"
, so I did not check the compatibility of operating systems, I was a fool, I know, I hope so much that I did nothing irretrievable, it's my son's tablet!
Click to expand...
Click to collapse
Did you use HOME CSC or the non HOME CSC when flashing?
Genpis said:
I have the same problem with a Tab S6 Lite, it is in bootloop and does not let me enter the recovery mode, I can go into download mode and I flashed the latest original firmware Android11, Android10 etc., . I tried them all but always goes in bootloop, and also the bootloop occurs only if I connect the usb cable to the PC, without any sign of life. Do I still have hopes or have I compromised the motherboard?
The reason for all this is because I had followed a guide to give root permissions with magisk, I did everything right, only that the guide was with Android10, while I had Android11 and I was deceived by the fact that in the title of the guide there was written "guide 2021"
, so I did not check the compatibility of operating systems, I was a fool, I know, I hope so much that I did nothing irretrievable, it's my son's tablet!
Click to expand...
Click to collapse
Try to install a castom rooted rom which has pre installed also Twrp.
[MAGISK Rom / Firmware base convertor) 420rom-T860/5 - V13.3- CUE1 - ANDROID 10 - OneUI 3.1 - Sec Patch 05/2021 - Released 06/07/2021
WELCOME TO 420 ROM - MAGISK ROM FOR SAMSUNG GALAXY TAB S6 WiFi/4G (T860/5)! 420rom Telegram-Group: Please bear in mind that things will be added as and when my learning and time permits (being a dad with a family and having ADHD myself means...
forum.xda-developers.com
Download the android 11 last rooted rom from there. You install it with odin as as a normal original rom.
Disable in odin auto reboot. After rom install, restart manually and press the correct buttons immediately to boot in Twrp and not to system. Format (not wipe) data from there and reboot to system. If you are lucky it will work..
(I hope you unlocked bootloader before try to root. If you haven't unlocked bootloader this won't work also).
Moe5508 said:
Here is solution to unbrick your device!!!
Despair not...I have just come from resolving this exact situation not 30 minutes ago. I'd been trying to flash (using Odin as I decided to stay on Stock and not root this device, for a change) the latest OneUI2.1 releases for my device (SM-T865 - LTE version) and boom in the middle of the Odin update, the flash just failed...I then couldn't reboot and get into neither Recovery, nor Download Mode because it appears my bootloader and recovery both got corrupted.
Here's what you need....
1. Odin app for PC (am on Windows)
2. Your device's Stock firmware (sammobile firmware archive)
3. You will need someone to help you boot the device directly into Download mode (and this is the tricky part because for most of us we are used to get into Bootloader by using the key combination (from Powered Off device) Vol+ and Power On at the same time to get into stock recovery and then scrolling down to option 2 in this menu, "Reboot to Bootloader". Well now you are going to boot directly into Bootloader mode. Here's how you do it...
4. Get your friend to line up the USB-C cable into the port of the device, but DO NOT press it in...yet
5. Press Power off and Vol- buttons at the same time to turn off the device
6. And now you have to to be super fast: if device starts to turn on on its own, YOU press and hold Vol+ and Vol- both at the same time while YOUR FRIEND pushes the USB cable fully into the port - you should now have booted directly into Download mode. (if not repeat this, and remember to be super fast and sync with your friend pushing in the USB cable)...
7. When you get into Download mode, then you are home and dry...
8. Select ONLY the Bootloader file (BL...XX...) in Odin, make sure only "reset time" and "reboot" are ticked, and flash
9. When device reboots, press Vol+ and Power combo to get back into Bootloader mode again...but I think device will reboot into Download mode on its own
10. Now select all the files from your Stock file into the various tabs (BL, CP, CSC, AP...) do not select HOME_CSC as we want to flush this device clean...
11. Flash, and voila...success - you will have lost all your data but rather that than losing the device...
12. Feedback here and let us know if this works? For reference for others in the future...
Click to expand...
Click to collapse
Why flashing only the bootloader first? At the moment I'm trying to recover my s20 fe from a bootloop without losing my data
sosimple said:
Try to install a castom rooted rom which has pre installed also Twrp.
[MAGISK Rom / Firmware base convertor) 420rom-T860/5 - V13.3- CUE1 - ANDROID 10 - OneUI 3.1 - Sec Patch 05/2021 - Released 06/07/2021
WELCOME TO 420 ROM - MAGISK ROM FOR SAMSUNG GALAXY TAB S6 WiFi/4G (T860/5)! 420rom Telegram-Group: Please bear in mind that things will be added as and when my learning and time permits (being a dad with a family and having ADHD myself means...
forum.xda-developers.com
Download the android 11 last rooted rom from there. You install it with odin as as a normal original rom.
Disable in odin auto reboot. After rom install, restart manually and press the correct buttons immediately to boot in Twrp and not to system. Format (not wipe) data from there and reboot to system. If you are lucky it will work..
(I hope you unlocked bootloader before try to root. If you haven't unlocked bootloader this won't work also).
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Any tips in recovering my stock s20 fe from a bootloop without losing data? already tried Odin but without success the first try
jointer said:
Same issue today for me. My tablet showed different screen with green and red text, it allowed me to delete app data, then booted into safe mode, then i had to do factory reset and now i am screwed, as it is refusing to restore any apps and their settings. I will try to flash it back to Android 9, maybe then it will do the restore. I forgot to do any manual backup to SD or so.
Edit: the device upgraded to 10, but reset itself after about 10 minutes of use.
Edit2: i found what caused it. It is caused by Nova Launcher, if i try to set wallpaper.
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did you managed to not lose your data?
jrdef said:
Any tips in recovering my stock s20 fe from a bootloop without losing data? already tried Odin but without success the first try
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Wiping cache partition in Recovery and reflashing the firmware are basically your only 2 options
jrdef said:
Any tips in recovering my stock s20 fe from a bootloop without losing data? already tried Odin but without success the first try
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Flash in odin the same rom you had. There are 2 csc files in rom, which you use 1 in odin one. Try use the "home csc". Home csc keep KEEPS your data. If you're lucky it may work. (It would work in keeping your data 100% if your rom was ok. Because it isn't you have some changes to work.).
You must try with same rom or newer.
CSC – If you flash the CSC file, it’ll perform a factory reset of your Galaxy device and wipe all data while installing a new firmware to bring your device to the same state as it was when you purchased it. Go with CSC if you want a clean installation.
HOME_CSC – On the other hand, if you want to keep your Samsung phone’s data and settings even flashing the stock firmware, you can select the HOME_CSC file.

Realme 1 random bugs/issues after Software update C.49 (May 20th 2020). Plz HELP

After I updated to C.49, my phone is acting weird...
1) Power Button is not working properly
2) Random emergency Call Screen and Power Reboot/Off Screen.
3) When I tried hard rebooting to go into recovery....it shows recovery mode at bottom for 10s and the reboots again to recovery mode text at bottom. It does not go into Menu of selection of English and Chinese language. This continues infinite times...Until finally it decides to boot to main home screen. But the Power button and Emergency screen/Reboot screen issue continues..
4) I tried factory reset of system setting...Same issue remained.
5) I finally tried factory reset wiping all data..Since the Version is latest C.49, which I believe has issues, the Emergency screen and Power Reboot Screens and Power Button not functioning properly continues..
6) I downloaded CPH1861EX_11_OTA_0490_all_sWtP8RDIvyoU.ozip from realme support. Tried updating that software in the phone..
But it lead to point (3) which I stated above...Same vibrating/rebooting after every 3 to 5 secs but not going into recovery Mode..It continued for 1 full day until battery died..Then I charged the phone for sometime and it continued its same funky routine of infinite rebooting and stopping at recovery Mode text.
But, eventually, after few hours, it booted normally to main screen.....But the problem was still there.
7) Now, even if try to shut down..from Power reboot/off screen...It shuts but in few seconds reboot again to main screen. So I cannot even shut it down.
8) I may try to download C.48 version (2.16 GB) and update from SD Card somehow..I don't know if it will revert back to different Version...But gotta try.
Or if there is enhanced or latest or custom update newer than C.49 available in market. maybe I should root or install that.
Frustrating...
How to get rid of this bug? I guess have to wait for new patch or something or next update. Service Centers are not open..because of Lockdown in Mumbai.
Please help, if someone knows the solution or had to deal with similar issue.
agovind said:
After I updated to C.49, my phone is acting weird...
1) Power Button is not working properly
2) Random emergency Call Screen and Power Reboot/Off Screen.
3) When I tried hard rebooting to go into recovery....it shows recovery mode at bottom for 10s and the reboots again to recovery mode text at bottom. It does not go into Menu of selection of English and Chinese language. This continues infinite times...Until finally it decides to boot to main home screen. But the Power button and Emergency screen/Reboot screen issue continues..
4) I tried factory reset of system setting...Same issue remained.
5) I finally tried factory reset wiping all data..Since the Version is latest C.49, which I believe has issues, the Emergency screen and Power Reboot Screens and Power Button not functioning properly continues..
6) I downloaded CPH1861EX_11_OTA_0490_all_sWtP8RDIvyoU.ozip from realme support. Tried updating that software in the phone..
But it lead to point (3) which I stated above...Same vibrating/rebooting after every 3 to 5 secs but not going into recovery Mode..It continued for 1 full day until battery died..Then I charged the phone for sometime and it continued its same funky routine of infinite rebooting and stopping at recovery Mode text.
But, eventually, after few hours, it booted normally to main screen.....But the problem was still there.
7) Now, even if try to shut down..from Power reboot/off screen...It shuts but in few seconds reboot again to main screen. So I cannot even shut it down.
8) I may try to download C.48 version (2.16 GB) and update from SD Card somehow..I don't know if it will revert back to different Version...But gotta try.
Or if there is enhanced or latest or custom update newer than C.49 available in market. maybe I should root or install that.
Frustrating...
How to get rid of this bug? I guess have to wait for new patch or something or next update. Service Centers are not open..because of Lockdown in Mumbai.
Please help, if someone knows the solution or had to deal with similar issue.
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Alright, Is Your Bootloader Unlocked?

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