Searching I found another method.
Get the file
BakUpTool_MT6577_4.0_v2e_4GB_sdcard2.rar (to save in
/mnt/sdcard/backup_v2/)
or
BakUpTool_MT6577_4.0_v2e_4GB_sdcard.rar (to save in
/mnt/sdcard2/backup_v2/)
Then follow this guide :
1) ROOT is necessary. It is recommended to put the phone in '
Airplane mode' so that it won't disturb the process and make sure you have ~500 mb space in SD card.
2) Download one of the file from the top of the post and extract it to your SD Card.
3) Install '
GScriptLite.apk' from
gscript folder.
3) After installation, open the '
GScriptLite' application ->
Menu ->
Add Script.
4) Tick '
Needs SU ?'
5) Click '
Load File' and select '
back_mt6577_a4_v2e_sd2.sh' and then select '
save'
6) Now Click on '
back_mt6577_a4_v2e_sd2' and Super User will ask for Permission and allow it. Nothing more to touch. Wait for few minutes. After few mins, it will say '
Auto Close is Cancelled'. Now its safe to close.
7) Your Back-Up will be in '
backup_' folder located in your SD card's root.
It will have files named '
firmware.info, preloader.img, nvram.img, seccnfg.img, uboot.img, boot.img, recovery.img, secstatic. img, misc.img, logo.img, expdb.img, cache.img, system.img, data.img' in that folder. Copy it to your computer and keep it at a safe place. More Over if you are posting in the forums or sharing it online, don't include '
data.img, cache.img and nvram.img' as they contain your personal information
The script are from Linerty :
Создание дампа ROM и работа с ним (MT65xx, Android). • 11 • Forum.China-iPhone.Ru