New to Miracle, Lava Invalid Imei

I am new to Miracle box . I have lava phone X81 .
It show invalid Imei , I dont have imei sticker also in phone
So, How to repair imei and if need imei can i use other imei number (From other phones )

License Expire Date: 2017-06-24
Definition Applied
1. Power Off Phone , Remove Battery, Insert Battery Back
2. Insert USB cable. In some cases Required Hold BootKey
3. Use Miracle Boot Key In cases Boot key not Find
4. Battery Should be Charged more then 50%
Waiting for USB Port…
Set MediaTek PreLoader USB VCOM (Android) (COM155)
Please Hold "ON" to connect with the phone…
Connected to Phone.
CPU: MT6735 SW:0000 Ver: CA00
Downloading Boot8 …
EMMC Size: 0x03A3E00000
Flash Type: EMMC
INT/EXT RAM Size: 0x20000/0x80000000
Reading infr(EMMC)…
WIFI MAC:000000000000
model:iris 870
PROINFO BaseAddr:0x80000 Size:0x300000
NVRAM BaseAddr:0x380000 Size:0x500000
PROTECT1 BaseAddr:0x880000 Size:0xA00000
PROTECT2 BaseAddr:0x1280000 Size:0xA00000
LK BaseAddr:0x1C80000 Size:0x80000
PARA BaseAddr:0x1D00000 Size:0x80000
BOOT BaseAddr:0x1D80000 Size:0x1000000
RECOVERY BaseAddr:0x2D80000 Size:0x1000000
LOGO BaseAddr:0x3D80000 Size:0x800000
EXPDB BaseAddr:0x4580000 Size:0xA00000
SECCFG BaseAddr:0x4F80000 Size:0x80000
OEMKEYSTORE BaseAddr:0x5000000 Size:0x200000
SECRO BaseAddr:0x5200000 Size:0x600000
KEYSTORE BaseAddr:0x5800000 Size:0x800000
TEE1 BaseAddr:0x6000000 Size:0x500000
TEE2 BaseAddr:0x6500000 Size:0x500000
NVDATA BaseAddr:0x6A00000 Size:0x2000000
METADATA BaseAddr:0x8A00000 Size:0x2600000
SYSTEM BaseAddr:0xB000000 Size:0xE0000000
CACHE BaseAddr:0xEB000000 Size:0x19000000
USERDATA BaseAddr:0x104000000 Size:0x29ED80000
FLASHINFO BaseAddr:0x3A2D80000 Size:0x1000000
Thx a lot