Boot Loop/Boot Stuck/Bricked Phone Fixing methods

[Devv_007]

Many users are facing boot stuck and boot looping issues,So I have created a post which will guide you to fix a phone with boot stuck screen.

Full procedure to fix a boot stuck or boot looped phone-

There are three methods to fix this issue-

1)Wipe cache from recovery mode.

2)Hard reset from Recovery mode.

3)Reinstalling firmware via Odin tool.(PC required)

1)Wipe Cache Partition-

You need to boot your phone to Recovery mode first.Power off phone>Press Volume UP+Power button at same time and when Phone model name logo appears then release all buttons.>Recovery Mode>Use Volume up and down keys to navigate and then Select Wipe Cache Partition>Confirm>Check it by rebooting if not rebooting then refer to step 2.

2)Hard reset-Power off phone>Press Volume UP+Power button at same time and when Phone model name logo appears then release all buttons.>Recovery Mode>Wipe Data/Factory Reset>Confirm>Check it by rebooting phone if still not working then refer to step 3.

3)Firmware Flashing through Odin tool.

Things required- Computer>  Samsung USB drivers installed in it, Odin tool in PC and Official Stock Firmware.

1)Firstly download your phone's official stock firmware from the given site-

https://www.sammobile.com/firmwares/recent/ 

Visit this site and enter your model number in "My Model Number" Tab and 'INS' in "My Country Code". (Create a free account in sammobile.com and login, You can also pay for a premium membership if you want to increase download speeds)

2)Select the Latest firmware and download it.

3)Download Odin tool from same link from where you're  downloading firmware>Install Odin.

4)Extract the firmware files with an archive tool.>You should get 5 files: AP , BL , CP , CSC_ , HOME_CSC_

5)Add each file to its respective field in Odin.(Don't mess with any other settings in Odin tool)

6)Boot to download mode in phone by - Recovery Mode>Reboot to bootloader.

7)Install Samsung USB drivers from this site-https://developer.samsung.com/mobile/android-usb-driver.html >Connect phone to PC.>Odin should detect your phone and a blue box will appear with COM port number in it.

8)Click Start button and wait for Odin to say 'PASS' in a GREEN box.>Your phone will take some time to fully boot after this procedure.

If anyone need any help regarding this issue then comment in this post.

[Devv_007]

@MeghaPratapReddy Mention your phone screen status.

Also check if you have installed Samsung USB drivers in PC ,Check with other USB cable and try to connect with some other port in PC.

[MeghaPratapReddy]

NO change on the mobile phone screen status. Still in downloading don't turn off target mode.

Installing Samsung usb drivers on system to see if the connection works

[flamestRik3R]

Did something work for you. If so, please do let me know. I think i am in the same issue right now. Its just stuck in odin fail mode and everytime i press vol down + power it goes back to same screen.

Odin is not at all recognizing my device even with samsung drivers. If anyone knows the solution please do tell

[MeghaPratapReddy]

https://r2.community.samsung.com/t5/Tech-Talk/Samsung-M31-Update-bleep/td-p/4004768

[ritrapika]

Hello, did you get any solution?

Please reply. I have got the same problem.

[ashish2002]

it requires to unlock bootloader

[ashish2002]

to flash using Odin it requires to bootloader unlock

[Devv_007]

No ,unlocking bootloader isn't required.Its only required for rooting or flashing a custom ROM.Stock ROM doesn't require bootloader unlocking.

[ѵօϲɑӀ4ӀօϲɑӀ]

Noo, Flashing through bootloader doesn't mean Unlocking bootloader.

[ashish2002]

can I downgrade from andorid 10 to andorid 9 without unlocking bootloader in a50