SM-G850f

Platform: Samsung Android
Selected port: COM14
Selected model: SM-G850F
Port is busy
Searching for a phone. Please wait…
Please, press "OK" button on the phone to allow USB debugging..
Phone found.
Please, press "OK" button on the phone to allow USB debugging..
Please, press "OK" button on the phone to allow USB debugging..
Firmware compiled date: Thu Aug 28 10:01:18 KST 2014
PDA version: G850FXXU2ANHD
CSC version: G850FOJV2ANHA
SW version: Unknown
Phone IMEI: Unknown
Android version: 4.4.4 (KTU84P)

What is SW and how to fix that? i’ve already flashed 4.4.4 from octoserver, still same, and also, if i perform a wipe from recovery i get this alert :
"E: unknown volume for path </sbfs<
E: unknown volume "/sbfs"

Can you help me somehow? ty