Imei Repair Failed

Action : Repair IMEI
1.Remove Battery, Insert usb cable, Insert battery
2.power off Phone, Remove & Reinsert Battery , insert USB Cable
(In Case Some Phone Required to hold bootkey)
Waiting for Phone Usb…
Phone found [ USB Port:COM5 ]
Connection Done.
Read CPU Info…
CPU_ID: 6572
CPU_SW: 0000
uploading boot image to RAM…
Handshake received from Phone.
Detected eMMC FlashType.
uploading boot image to RAM…
Handshake Received from Phone.
eMMC cid: 45010053454D303447
CHIP : MT65720000
EMMC ID : 45010053454D303447
EMMC Size: 4GB, usable capacity: 3.69GB
EMMC Name: eMMC_Sandisk_SD7DP24F_4G
Read Hardware Information is done.

Checking imei …

Error: dectyption failure [0x4B]

Action completed
Time taken : 00:00:12
Reconnect Battery/USB Cable
CS-Tool Ver 1.38

Intex Aqua Y2
Other Tool Success Plzzzzz Clear Bugsssssss