g950f unlock err0r

Welcome to Octoplus Box Samsung software version 2.7.7
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Platform: Samsung Android
Selected port: COM3
Selected model: SM-G950F
Operation: Read Codes - Server
Detected phone model: SM-G950F
Firmware compiled date: Fri Feb 15 19:06:41 KST 2019
PDA version: G950FXXU4DSBA
CSC version: G950FEVR4DSBB
SW version: G950FXXU4DSBA
Phone SN: RF8K52VJTZE
Android version: 9 (PPR1.180610.011)
Sales code: EVR
Country: UK
HW platform: exynos5
HW Chip: unknown
HW Modem: SHANNON355
Security patch level: 2019-02-01
Warranty Void: 0
SIM 1 status: absent
Codename: dreamltexx
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Connecting to server ..
Username:xxxxxxxx
Connect to server successfull.
Checking smart card...
Smart card successfully checked.
Your balance: 50 credits.
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Checking operation...failed
Device's modem is not supported. Please update phone's firmware!
Support for this modem will be added in 24 hours!
Read codes failed
Performed by 2.7.7.4 Software version.