Samsung S21 Ultra CPID Restart and app crash problem

[Fahad098]

I have s21 ultra us model my phones sometimes restart and sometimes app crash why is there any solution i updated my phone from outside means no update was in phones updates 

[Salman__]

It can be a software glitch or bug download the original software of s21 ultra and check if it does this again if it does can be a motherboard or something else issue

[Fahad098]

How can i download the original software

[Salman__]

Search on Google Sam mobile and click on their firmware section put your device model no and country and you I'll see the latest version at the top click on it and download and install it in to your phone

[Aqib_U_Rehman]

I can do this

[Fahad098]

??

[Aqib_U_Rehman]

But not free

[Fahad098]

First tell me what is the issue

[Aqib_U_Rehman]

Software issue

[Fahad098]

Ok and what will be the solution