Iball Andi hang on logo solved by format by Great tool CM2 Operation : Check/Read Info [ v1.24 ] Code:
1. Remove battery. Insert battery back
2. Press and hold 'VolumeUp' and 'VolumeDown' keys
3. Insert cable
==== Wait for phone...
Phone found! [ 12 ]
Port Opened
Sync...
InitBoot Done [ 0x81 ] , Ver : SPRD3
Sync...
Sending FDL
[Info] : If SW freeze here more, than 15 seconds - remove cable
PickUp loaders from pac
FDL Ready!
Boot Ver : Spreadtrum Boot Block version 1.1
Sending FLASH FDL
FLASH FDL Ready!
Boot Ok!
FLASH : eMMC Flash , Structure : Ok!
Reading extended info ...
Model Name : v211_ytk_231
Model Brand : iBall
Model Device: v211_ytk_231
AndrVersion : 4.4.2
BaseBand CPU: V211_YTK_231
CompileDate : 9/11/2015 12:27:54 PM
Project Ver : KOT49H 14B_test-keys
Model Ext : Andi 4.5 O'Buddy
ExtraInfo : HWInfo not exists, normal phone
Elapsed: 00:00:25
Reconnect Power/Cable!
Operation : Format File System / Reset Settings [ v1.24 ] Code:
Settings : SmartFormat is On
1. Remove battery. Insert battery back
2. Press and hold 'VolumeUp' and 'VolumeDown' keys
3. Insert cable
==== Wait for phone...
Phone found! [ 12 ]
Port Opened
Sync...
InitBoot Done [ 0x81 ] , Ver : SPRD3
Sync...
Sending FDL
[Info] : If SW freeze here more, than 15 seconds - remove cable
PickUp loaders from pac
FDL Ready!
Boot Ver : Spreadtrum Boot Block version 1.1
Sending FLASH FDL
FLASH FDL Ready!
Boot Ok!
FlashMode Set : Ok!
Checking Structure ...
Detected eMMC Flash , Structure detect Ok!
eMMC phone detected! Will use 'Safe Format' mode!
Mount : /data
Size : 0x00000001067FB000
State : 0x0001
Mount : /cache
Size : 0x0000000009600000
State : 0x0001
Prepare Ok! Format Ok!
Don't touch phone, until it fully bootup to "Welcome Screen"!
Done!
Elapsed: 00:00:48
Reconnect Power/Cable!