Donwgrading to OneUI 3.1 from OneUI 4.0

[Ashutosh7x]

(If you don't perform any step correctly, your mobile may get bricked. I'm not resposnible for bricked devices.) 

If you have updated to OneUI 4.0 and are facing lots of bugs then you can downgrade to OneUI 3.1 if you feel performance was good on OneUI 3.1 

Before you downgrade: 

1. It will not void your warranty. 

2. All Samsung apps like Pay, Bixby, secure folder work 

3. Banking apps like Gpay, Phonepe etc work 4. You can keep your files or wipe them 

Files Needed: 

Odin:

https://odindownload.com/download/Odin3_v3.14.1.zip 

Samsung USB driver:

https://developer.samsung.com/sdp/file/17a610e4-ce96-4291-8757-37f2134fb37e 

Firmware: 

https://samfw.com/ 

or 

https://samfirms.com/ 

or 

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

Self Help: 

XDA guide on using Odin:https://www.xda-developers.com/how-to-update-samsung-galaxy-smartphone/ (read carefully)

Youtube video on downgrading and understandingbinary number:

https://youtu.be/O2xT8X__37g

It takes 10-15 min to flash the Firmware be patient. 

[vivek1989]

Knox trip ho jayega risky hai bhai

[Ashutosh7x]

Nhi hoga bhai agar Odin se kroge..

Bootloader locked hi rhta h

[TheFastestIndian]

Great info 👍🏻

[YuvixM]

I think downgrading will definitely format your phone even you use home csc

[Ashutosh7x]

It doesn't if you use home csc

[YuvixM]

I was thinking the same for s21+ but being let down by the fact it might get formatted.
So you went down from 4.1/4.0(A12) to 3.1(A11)?