file info: 
6166_PCB01_GPRS_MT6261_S00.AL61D_6166_AGTEL_WINSTA R_EN_BE_V12



1---In order to switch off your device hold down the Power button for a short while.

2--Then press and hold two keys simultaneously: Volume Up + Power for a couple of seconds.
3--You can release held keys when the Recovery Mode shows up on the screen

4--After that, choose "wipe data/factory reset" use the Volume keys to navigate and the Power button to confirm.
5--Select "Yes--delete all user data". Use Volume Down button to scroll andPower key to select.
6--To restart the phone, select "reboot system now



7--Success! Your phone should begin the hard reset operation.
  1. Then from the home screen open Menu and choose Settings.
  2. After that select Backup&Reset and tap Factory data reset.
  3. Choose Reset phone and select Erase everything to begin the whole operation.
  4. Well done! The hard reset has just been performed.




 Flash ID:0x00C2002500000000 
 Flash Name:SF_MX25U12835FZNI_10G 
 Flash Size:0x01000000->16M 
  CPU Name:6531 


CPU TYPE:SC6531 [65310000]
  FLASH ID: 00C8006000170000
  Flash Type:[GD]  25LG64bWL
  Size:0x800000(8MB)


  Spreadtrum Boot Block version 1.2
  CPU TYPE:SC6531 [65310001]
  FLASH ID: 00C2002500380000
  Flash Type: SF_MX25U12835FZNI_10G      
  Size:0x1000000(16MB)
http://www.4shared.com/rar/mq8BCp5Iba/OCTENN__T72_Flash_File_spd_653.html


 Spreadtrum Boot Block version 1.2
  CPU TYPE:SC6531 [65310000]
  FLASH ID: 00C8006000170000
  Flash Type:[GD]  25LG64bWL
 Size:0x800000(8MB)


CPU TYPE:SC6531 [65310001]
  FLASH ID: 00C8006000160000
  Flash Type: SF_GD25LQ32                
  Size:0x400000(4MB)


CPU TYPE:SC6531 [65310000]
  FLASH ID: 00C8006000160000
  Flash Type:[GD]  25LG32bWL
  Size:0x400000(4MB)

 CPU TYPE:SC6531 [65310001]
  FLASH ID: 00EF004000160000
  Flash Type: SF_W25Q32BV                
  Size:0x400000(4MB)