Q Mobile HD Plus IMEI Repair Failed

[gsmfazal]

Q Mobile HD Plush SC9850x_Base (Model Type) SC9850_eMMC_1GB_RS ...
IMEI Repair Failed.... Why ???? Where i Am making mistake or CM2 not support IMEI repair for this model ?

1. Power off device, wait 10-15 seconds
2. Press and hold BooKey ( 1 : BOTH VOL , 2 : VOL+ , 3 : VOL- )
3. Insert cable in device!

Wait for device ...

Device Connected!
BootVersion : SPRD3
Boot : INF : 0_SC9850x_BASE : SC9850_eMMC_1GB_RS
Sending Init Boot ...
Boot sent!
Kick FDL ...
BootVersion : Spreadtrum Boot Block version 1.1
Protocol setup ...
Port speed : 921600
Sending Flash Boot ...
Boot sent!
Kick FLASH FDL ...
FDL : Control transfered!

Boot Done!

NVMng : SecurityInfo
IMEI[1] : 355300000000000
IMEI[2] : 355300000000000
IMEI[3] : 867400020316638
WIFIMAC : FFFFFFFFFFFF
BT_MAC : FFFFFFFFFFFF
SEC : SLS:0, SKS:0, SKV:4


New SecInfo :
IMEI[1] : 35782xxxxxxxxxxx
IMEI[2] : 3548xxxxxxxxxxxx

NVMng : Failed to update NV!
ERROR : 000000AC:AC000000FF537E00
GEN : UNKNOWN RESPONSE!


Error : Flashing failed!
Check previous message for more info!

Reconnect Power/Cable!