SM-G920 imei and software

samsung s6 sm-g920 come to me with imei 350000000000006/22 i take info on octoplus box its like this.

Platform: Samsung Android
Selected port: COM358
Selected model: SM-G920F
Searching for a phone. Please wait…
Phone found.
Firmware compiled date: Sat Sep 19 11:12:51 KST 2015
PDA version: G925AUCU3BOI2
CSC version: G925AATT3BOI2
SW version: G920AUCU3BOI2
Phone IMEI: Unknown
Phone SN: R38G60SBAPD
Android version: 5.1.1 (LMY47X)

in Odin mode its show

Proudct model : SM-G920A but in setting about its show SM-G920F and in octopus logs its show G925 in PDA, CSC ans SW G920A.

How to recover this phone?

i try to flash with SM-G920F and SM-G920A firmware 5.1.1 with odin its show error NAND write start fail, also in odin mode Secure download Enable.