s6 edge not working after 6.0 marshmallow

[danial9]

ever since i updated my s6 edge my phone never worked the way it was working before

some problems i have 

Facebook sometimes says it is not connected to intenet so it does show new content

viber never works, when i call someone and if i turn my screen off , go back to see other thing on viber, do any-other thing it disconnects right away. 

my email takes half an hour to refresh [not gmail but my uni email] before it took 1 sec to show new emails

my music spotify stop mid way and say no more internet connection and many more 

 

i have super fast internet in my home and 4g on my data plan , there is no problem coming from internet side dont know whats wrong

1] help me

2] is there a way to go back to old version before marshmallow. 

 

 

[Narigaur]

If you must go back to the old version, you need to re-flash the stock ROM.

[danial9]

3 minutes ago, Narigaur said:

If you must go back to the old version, you need to re-flash the stock ROM.

i dont understand i word you said 

[Narigaur]

That's just one of the methods of restoring your phone. Another way is to restore to factory settings. If that doesn't work, you can always ask me about restoring the stock ROM.

[TAHIRMIA]

19 minutes ago, Narigaur said:

If you must go back to the old version, you need to re-flash the stock ROM.

 

11 minutes ago, Narigaur said:

That's just one of the methods of restoring your phone. Another way is to restore to factory settings. If that doesn't work, you can always ask me about restoring the stock ROM.

It is technically stock already

 

What you need to do is go to Sammobile.com and search for your model and region then pick the android 5.1 FW and download it. Meanwhile download Odin and when it is done extract the Zip file from Sammobile and open Odin. Click AP and select the FW you downloaded. When it has loaded click start and let it flash. it will automatically reboot the phone but if you get stuck in a BootLoop you will have to factory reset the phone so make a backup of important data before you begin.

 

Edit: Get into download mode before you press start

Quote

You missed the part where you have to hold down Vol. Down + Home + Power

Thanks @Narigaur for correcting me

Edited July 12, 2016 by TAHIRMIA
correction

[Narigaur]

1 minute ago, TAHIRMIA said:

 

It is technically stock already

 

What you need to do is go to Sammobile.com and search for your model and region then pick the android 5.1 FW and download it. Meanwhile download Odin and when it is done extract the Zip file from Sammobile and open Odin. Click AP and select the FW you downloaded. When it has loaded click start and let it flash. it will automatically reboot the phone but if you get stuck in a BootLoop you will have to factory reset the phone so make a backup of important data before you begin.

You missed the part where you have to hold down Vol. Down + Home + Power