Please help. Cannot update and wondering if my phone is a security threat?

[lentils]

Have had my Verizon Samsung Galaxy S5 for one year with service through MVNO provider RedPocketMobile.com

Have often checked for updates, but phone remains stuck on Lollipop, Android 5.0 and never updates over the air or through wi-fi. Wondering how to update to Marshmallow and if being stuck with 5.0 is a security threat. Any ideas/suggestions? Here is the info my phone reports:

'Check for new system updates' reports "Your Samsung SM-G900V is up to date. No update is necessary at this time."

'System update history' reports "Software Version: G900VVRU2BOG5, Configuration Version: J13.SAM.SMG900V.1"

'Last System Update: No updates applied"

Other info reported:

Hardware version: G900V.05

Kernel version: 3.4.0 [email protected] #1 Fri Jul 31 11:35:22 KST 2015

Build Number: LRX21T.900VVRU2BOG5

Security Version Software: MDF v1.1 Release 4, VPN v 1.4 Release 4.1

Knox version : Knox 2.3

Thank you for your help!

 

[[email protected]]

Download Samsung Kies 3 to your computer and backup all important data to your Pc then connect phone to computer via USB cable and open Samsung Kies 3 and it will download an update your phone for you

Sent from my Nexus 4 using Tapatalk

 

[lentils]

Download Samsung Kies 3 to your computer and backup all important data to your Pc then connect phone to computer via USB cable and open Samsung Kies 3 and it will download an update your phone for you

Sent from my Nexus 4 using Tapatalk

It worked! Thank you!!!!

 

[[email protected]]

You're welcome

Sent from my Nexus 4 using Tapatalk