Xiaomi 2014811 (Miui7) Activate this Device

Hello ,
Need help to Remove Mi Account

In Xiaomi Tab , i tried with Mi Account reset
Operation Done ,but the phone hang on Mi logo

Definition Applied
Connecting to Phone,Wait..ok
Wipe data…
erasing ‘userdata’… OKAY
erasing ‘cache’… OKAY
>>Done.

I tried again with Reset Micloud option ,the operation Done
But still ask activation !!!

Definition Applied
Starting…
Searching for devices fastboot…
devices found:
35e33805
start Reset…
Creating filesystem with parameters:
Size: 5955891200
Block size: 4096
Blocks per group: 32768
Inodes per group: 8080
Inode size: 256
Journal blocks: 22719
Label:
Blocks: 1454075
Block groups: 45
Reserved block group size: 359
Created filesystem with 11/363600 inodes and 48425/1454075 blocks
Creating filesystem with parameters:
Size: 335544320
Block size: 4096
Blocks per group: 32768
Inodes per group: 6832
Inode size: 256
Journal blocks: 1280
Label:
Blocks: 81920
Block groups: 3
Reserved block group size: 23
Created filesystem with 11/20496 inodes and 2620/81920 blocks
erasing ‘userdata’…
OKAY [ 1.594s]
formatting ‘userdata’ partition…
sending ‘userdata’ (94769 KB)…
writing ‘userdata’…
OKAY [ 9.344s]
erasing ‘cache’…
OKAY [ 0.094s]
formatting ‘cache’ partition…
sending ‘cache’ (6972 KB)…
writing ‘cache’…
OKAY [ 0.703s]
finished. total time: 11.734s
start Reset…
erasing ‘config’…
OKAY [ 0.016s]
finished. total time: 0.016s
start Reboot-BootLoader…
rebooting into bootloader…
OKAY [ 0.000s]
finished. total time: 0.000s
start Reboot.
< waiting for device >
rebooting…
finished. total time: 0.000s
>Reboot complite.
>>Reset Micloud Complited.

Pls is there real solution to fix this problem ?

Thanks 🙂