[PASSIONATE_BOYS]

Originally Posted by resident2011

MTK CPU 6229 Nand Only unlock smart fast
Action: "sp-unlock"
unlock method: smart fast
Model: Autodetect 6228-6239 NAND
Checking data, wait...
Phone should be Switched OFF !
Press and HOLD Power button now !
19200 autodetect
Initializing [6228:8A02:8A02]...
CPU: MT6228
high speed boot On
chip: 0031:0000:0101
status: FF
Connecting at 19200, wait...
Release Power button now !
Phone detected, wait...
Hardware: MT6228,E02
Date: 2004.07.02
Version: 1.1
Version: MAUI.06A.W06.44.MP.V37
Version: SPRING28_06A_HW
detecting structure #2...
0 done
42 byte(s) read
imei: 00000000000000
connection Ok
detecting structure #1...
0 done
148 byte(s) read
reading data...
building new data...
writing data...
detecting structure #3...
error: can't read additional data
reading data...
34 byte(s) read
building new data...
warning: unknown lock mode: 2E303641
error: data is invalid
Finished, time used: 16 sec
Remove/Install battery now !

Firmware.
SM770_PCB04_GPRS_MT6228_S02.MAUI_06A_W06_44_MP_V37 __firmware_20100523-111654.B4M

Hello,
Make full flash back up and try with standard method.
Wr.