DUB-LX1 how to remove demo

Model: DUB-L21
IMEI: 867?????????????
IMEI2: 867????????????
Firmware model: DUB-LX1
Dataver: DUB-LX1 8.2.0.100(C185)_DATA_DUB-L21_hw_meafnaf
SN: 58K6R19104001481
PCB SN: 58K6R19104001481
WiFi MAC: E4:34:93:A9:28:9C
BlueTooth MAC: E4:34:93:A9:38:3D
Vendor: hw
Country: meafnaf
RAM: 3GB
eMMC: 32GB
eMMC ID: 150100474436424D42015FBDCEEE7500
HUN: 0000000000000000

IMEI 1 Sim Lock status:
NET: unlocked
NETSUB: unknown
SP: unknown

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