Why am I getting an error message?

[Pink]

Please Help! Unauthorized software on Galaxy S4

My Sprint S4 was rooted, but I unroored it so I could update to the new software. Which broke my WiFi, so I tried to fix it, and now I get this.

System Software not authorized by Samsung has been found on your phone.

 

[Night29m]

Re: Please Help! Unauthorized software on Galaxy S4

Going to have to install a rooted injected stock rom via Odin... Or custom recovery and custom rom.... I think....