1. 2015 is going to be a great year for Android! Why wait??
    Samsung Galaxy Note 5 | Samsung Galaxy S6 | HTC One M9
  2. New Forum Created: Samsung Gear VR!

[Guide] Full ROM Backup/Dump And Restore For Micromax A90 (SPFT + CWMR Method)


  1. airjordan

    airjordan Member

    Creating A Dump\Backup

    Note: Root Required

    1. Set "Settings" -> "Display" -> "Sleep" -> "10 minutes"

    2. Install or update "Busybox" from play store

    3. Set your phone to "Airplane" mode

    4. Make sure that the card is not less than 2Gb of free space

    5. Use any one of the following:

    View attachment BakupTool_sdcard.zip saves a backup copy on the path: /mnt/sdcard/backup_v2

    View attachment BakupTool_sdcard2.zip saves a backup copy on the path: /mnt/sdcard2/backup_v2

    6. Extract the BakupTool_* to sdcard. Full path to the file should be: / sdcard / gscript

    7. Install program: /sdcard /gscript /"GScriptLite.apk"

    8. Open the program "GScriptLite". Press "Menu button" -> "Add Script"

    9. Set tick "Needs SU"

    10. Click "Load file" and select "back_mt657x.sh"

    11. Click the button "Save"

    12. Tap on a new script, "back_mt657x.sh". After that give the program root permissions if asked and wait for 5- 10 minutes. Do not use the phone during the process.

    A sign of a normal shutdown of the script is:
    Message in the terminal:
    100% Backup Complite!!!
    Saved to / sdcard/backup_v2/GGGGMMDD-ChChmm
    Star Time: hh: mm: ss; End Time: hh: mm: ss

    The appearance at the root of SD-card phone the following structure of folders and files:

    backup_v2
    YYYYMMDD-hhmm
    * BDRS-YYYYMMDD-hhmm
    boot.img
    cache.ext4.tar
    data.ext4.tar
    nandroid.md5
    recovery.img
    system.ext4.tar
    * misk
    cache.img
    cmdline.info
    config.info
    cpu.info
    nvram.img
    nvram.tar
    ram.info
    rom.info
    * over
    expdb.raw
    full_preloader_part.raw
    misc.raw
    pmt.raw
    sec_ro.raw
    seccfg.raw
    unknown.raw

    boot.img
    dsp_bl.img
    ebr1.img
    firmware.info
    MT6577_a4_v2c.info
    logo.img
    mbr.img
    preloader.img
    recovery.img
    system.img
    uboot.img
    data.img


    Restoring A Dump\Backup

    There are two methods to restore the backup/dump.

    Method 1: SP Flash Tool

    1. Move the backup_v2 folder from "SDcard" ("Phone storage" if you have used script from BakupTool_sdcard2.zip) to your windows PC.

    2. Download and unzip/extract View attachment MTK6575 Drivers.zip on your Windows PC, just run InstallDriver.exe to install drivers.

    3. Download View attachment preloader + scatter (micromax a90).zip and View attachment SP_Flash_Tool_v3.1207.03.zip , unzip/extract them

    4. Open extracted preloader + scatter (micromax a90) folder and move "preloader_gionee75_cu_ics.bin" and "MT6575_Android_scatter_emmc.txt" to backup_v2\YYYYMMDD-hhmm\

    5. Now open extracted SP Flash Tool folder and run Flash_tool.exe

    6. Click on "Scatter-loading" button which is on the right side below Downloading Agent. A new window will open. Browse to backup_v2\YYYYMMDD-hhmm\ folder and select MT6575_Android_scatter_emmc.txt file. A error message will occur, but ignore that and click OK

    7. Flash tool will populate the Map file on the application window. You will see multiple entries. Uncheck DSP_BL, SEC_RO, EBR2 and FAT.

    8. Now,
    Click on PRELOADER and browse to backup_v2\YYYYMMDD-hhmm\ and select "preloader_gionee75_cu_ics.bin"
    Click on MBR and browse to backup_v2\YYYYMMDD-hhmm\ and select "mbr.img"
    Click on EBR1 and browse to backup_v2\YYYYMMDD-hhmm\ and select "ebr1.img"
    Click on UBOOT and browse to backup_v2\YYYYMMDD-hhmm\ and select "uboot.img"
    Click on BOOTIMG and browse to backup_v2\YYYYMMDD-hhmm\ and select "boot.img"
    Click on RECOVERY and browse to backup_v2\YYYYMMDD-hhmm\ and select "recovery.img"
    Click on LOGO and browse to backup_v2\YYYYMMDD-hhmm\ and select "logo.img"
    Click on ANDROID and browse to backup_v2\YYYYMMDD-hhmm\ and select "system.img"
    Click on CACHE and browse to backup_v2\YYYYMMDD-hhmm\misk and select "cache.img"
    Click on USRDATA and browse to backup_v2\YYYYMMDD-hhmm\ and select "data.img"

    9. Click on "Download". Warning message will occur, but ignore that and click Yes

    10. You will see in the status bar below "Searching", now connect your phone (without battery inserted) via the USB cable

    11. Wait for the process to finish and then you will get a window showing green circle

    Congrats! You have flashed your backup

    Method 2: Clockworkmod Recovery Method

    1. Flash the CWM recovery using the guide given here http://androidforums.com/micromax-a90/644776-recovery-cwm-recovery-v5-5-0-4-a.html

    2. After successfully flashing the CWM recovery open File Manager and click on SD Card (Click on Phone storage if you have used script from BakupTool_sdcard2.zip)

    3. Create new folder "clockworkmod". Open it and again create new folder "backup"

    4. Now go to the root of your SD Card (go to the root of your Phone storage if you have used script from BakupTool_sdcard2.zip). Search for "backup_v2" folder, open it and go to "YYYYMMDD-hhmm" folder.

    5. Move "BDRS-YYYYMMDD-hhmm" folder to SD Card\clockworkmod\backup (move to Phone storage\clockworkmod\backup if you have used script from BakupTool_sdcard2), after this switch off your phone

    6. Switch on the phone with "Volume Up" and "Power" button pressed. The Phone will boot into CWM recovery

    7. In CWM recovery using volume keys and power button go to "backup and restore" and choose "restore" (choose "restore from internal sdcard" if you have used script from BakupTool_sdcard2)

    8. Select the backup "BDRS-YYYYMMDD-hhmm" and choose "Yes - Restore"

    9. Wait till CWM recovery restores your backup. When restore completes choose "reboot system now"

    Congrats! You have restored your backup

    Warning: Please don't use SP Flash Tool to download ROM not meant for your phone, it will brick it. After you have download wrong "PRELOADER", your phone will be completely dead, cannot power on, no charging, no recovery, no USB vcom detection

    Advertisement
    :
    suasuasu likes this.
  2. zeebra

    zeebra Member

    Would you please help to understand; How the above ROM backup procedure is different from going to CWM recovery > backup and restore > backup ?
  3. airjordan

    airjordan Member

    This procedure dumps all the rom files which can be flashed by sp flash tool.

    It dumps all the files such as boot.img ,dsp_bl.img, ebr1.img, firmware.info, logo.img, mbr.img, recovery.img, system.img, uboot.img etc

    It's an alternative method especially for those who do not have CWM Recovery.
  4. bhojo1

    bhojo1 Member

    Also if you totally screw your phone so that you are unable to get to cwm you can use sp flash tool and recover
  5. airjordan

    airjordan Member

    That's right buddy!
  6. rajakumarn

    rajakumarn New Member

    Plz post Full ROM Backup/Dump And Restore For Celkon A97i
  7. zestysunny

    zestysunny New Member

    Hello Sir,

    I encountered problem while taking ROM backup of MMX a90 with Gscript and busybox , the process always do stop at 50 % with error (have attached pictures of error and also kept 5 gb space empty in SD card while doing procedure) kindly help me to solve the error and please do tell alternative ways to take ROM backup for MMXa90.
Loading...

Share This Page