Odin

[immi007]

If u flash stock frimware with Odin without turning on bootloader ( OEM ) then your WARRANTY is STILL THERE  and will not trip Knox.

(Using download mode and official firmware from Samsung)

but 

if u turn on oem(or bootloader) or 

flash other funny things besides the stock firmware found on samsungs website (you will need to bear the slow speeds)

then u will void your warranty....

 so make sure to get your firmware with your correct region from  and

 if u know how to flash the stock rom do it or else follow tutorials on Youtube 

KNOX ?

imagine that Knox is like a "little copper wire" inside your phone which is controled by software. Once you install a custom rom or root, the Knox is tripped - in another words that little wire is cut in half. By doing that you ofcourse void your warranty and you can never undo it. I hope that clarifies it a bit.

 If you want, you can google "e-fuse" and find out more info about nature of knox...

- Wishing you Luck. 

Below thing inspired this post

https://r2.community.samsung.com/t5/Others/a-simple-question/td-p/4181166

[immi007]

what trick?

[Jiyodilse]

trick mean above method...

[immi007]

installing TWRP ... rooting phone and clocking device(kernel auditor)?

[immi007]

you understand the risks right?

tripping knox and never be able to recover it,
void warranty,
damage hardware of the phone permanently,
banking and payment apps wont work*.

might brick your phone in the process

could lose your data

can be stuck in the bootloop temperarly.

[Jiyodilse]

yes.

i know all things very well..Previously i had used in my s4 mini and most Samsung devices..

it can be restored default if problem occure due to root..

so don't worry about root..

Samsung's hardware is very good but optimization of OS is very poor as kernel version too..


so if u have any idea how to root and install TWRP without PC...?

actually which bootloaders are provide on google or any online site not working after after of android 10...

[immi007]

unlock bootloader using ODIN-PC
using CF-Auto root is best way.

without PC is high risk method and i don't know if it works properly.
so backup your device first.

root your phone using the Kingo root

https://root-apk.kingoapp.com/kingoroot-download.htm

Install SuperSU


flash custom ROM after rooting using flashify

https://play.google.com/store/apps/details?id=com.cgollner.flashify

...
you can search how to do it on Google.


Also unlocking bootloader and installing TWRP is done at same time these days by CF-Auto by Odin in PC

[Jiyodilse]

it is showing that one..not working

[immi007]

then you need a PC.... kingoroot supports upto Android 8

[Sagar_d]

Hello sir ,

I have bought an M51 in the UAE and want to flash the India version stock samsung ROM. Will I be able to do the same using odin and stock samsung firmware without tripping know? And without voiding warranty?

Note: I checked both versions have different CSC and AP but have the same CP ,so what i figured is both have the same modems and just changing the software and CSC should not make a difference .

Please advice

Thank you .

[Jagutherrschaften]

"...By doing that you ofcourse void your warranty and you can never undo it..."

It's not like that's a nature's law. Samsung could decide to change that.
Installing a custom ROM doesn't automatically damage your phone or make it unsafe to use it. It gives the user power back, power to choose which apps to use, which bloatware to remove etc. Obviously Samsung wants to decide for the users which apps can be removed and which can't. This is very annoying.