firmware problems

[Epawaz]

hello, i would like to request for help with my note 8 N950F i bought it from a previous owner but i think it was refurbished or he flashed it with a different firmware that don't match below are the details:

 Model: SM-N950F
Device type: greatqltechn
Product name: greatqltezh
Manufacturing date: 2017.09.21
Mobile operator: du
KNOX warranty bit: 0x0
Product Code: Not Active
PDA: N950FSQU4CRF3
CSC: N950FOYN3CRF2
Baseband: N950USQS5CRK1
Bootloader: N950USQS5CRK1
Changelist: 13368517
Buildnumber: R16NW.N950FSQU4CRF3
Build date: Tue Jun 19 15:29:10 KST 2018
Build fingerprint: samsung/greatqltezh/greatqltechn:8.0.0/R16NW/N950FSQU4CRF3:user/release-keys
Build description: greatqltezh-user 8.0.0 R16NW N950FSQU4CRF3 release-keys
Android version: 8.0.0
Kernel version: 4.4.78-14375742

[Epawaz]

csc file shows md5 error!, binary invalid

any help

[CHMultimedia]

Screenshots?

[Epawaz]

it has flashed but now the phone security error: This phone has been flashed with unauthorized software & is locked. call your mobile operator for additional support. please not that repair/return for this issue may have additional cost. any help with that?

[CHMultimedia]

That's not normal. I'll search what this could be...

[CHMultimedia]

Okay please turn off your device and hold the Power+Vol.Up+Bixby buttons. You should be able to wipe your cache and factory reset your device there. If this doesn't work, turn it off and go in Download mode and tell us the model number shown. And in fact do check if the model number is shown at the rear of your device. I'm starting to have doubts.

[Epawaz]

not able to go to recovery and not showing model but before in the download mode it was showing N950F

[CHMultimedia]

Ok return in Download Mode then. What model is shown?

[Epawaz]

n950u

[Cassidy]

USA ?  Project  Samsung Baikal ?

[CHMultimedia]

Okay, I'll get you that FW.