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How to backup ViewPad 7 Original ROM ?

Discussion in 'Android Devices' started by tinkoh, May 31, 2011.

  1. tinkoh

    tinkoh Lurker
    Thread Starter

    I have read few threads and know I need to do the following sequences

    0. viewpad 7 without root
    1. ROOT the viewpad 7 (Done as read the previous thread)
    2. Backup original ROM (fails via ROM manager as below)
    3. flash a new ROM (or how should the right process should be ...)

    Under step 1

    1.2 I have created second fat32 partition and run link2SD
    [Maybe next 32G SD card I will create a 2G ext3 second partition]
    1.3 factory reset the viewpad and re-install all app via app2admin
    [maybe I can restore faster via titanium backup under step 3.1?]
    1.4 App2SD by Sam Lu to ensure those app moved to SD

    So under step 2 there are few things I tried

    2.1 I have tried ROM manager to backup

    (But I being prompt to flash clockworkMod Recovery to be installed-
    thats why I am confuse abt the sequence)

    When I continue to "install"

    I being prompt for confirm phone model
    (After research I tried Spice M1700, Commtiva Link N700 and more
    But is it correct ?)

    Anyway I have failed to install

    [Question - should I created another ext3 partition?]

    I have tried other method
    Clockwork Recovery For MI700/N700/Viewpad 7/.. - Android @ MoDaCo

    2.2 Clockwork recovery
    copy it to the root of your sdcard..( /sdcard/cwrecovery.img )

    I used MyPhoneExplorer to copy the file over

    2.3 flash_image.zip
    unzip it and copy it to the root of your sdcard..( /sdcard/flash_image )

    I used MyPhoneExplorer to copy the file over

    2.4. Run Terminal Emulator

    I have tried Terminal Emulator (a blue screen and keyboard not working)
    and Android Terminal Emulator (I find the output very awkward to use)

    [Question - what is the better terminal emulator that work for viewpad7]
    [I used ADB shell but I may need more help on su command]

    I can continue but I would like to seek others for advices to summarize the whole process specially for viewpad 7

    3.1 Other than ROM manager, I saw Titanium backup was also needed
    [Also what are the list of ROM available for viewpad 7 ?]

    3.2 can viewpad be overclocked ?

    4.0 How to recover to original ROM and reset to original factory setting
    so that I can bring viewpad 7 for factory repair or sell to others ?

    4.1 How to tried various ROM together with different SD cards
    and boot into different ROM/OS

    [Hope someone can write a better FAQ for the whole sequences]

    Thanks and regards

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  2. chicknlil

    chicknlil Android Enthusiast

    With terminal emulator, your phone has to be vertical (rather than it's normal horizontal) or it won't work. Once in that app, you can press your 'menu' softkey to gain access to the keyboard.

    Not sure based on your post where you're tripping up in the backup sequence, so unsure of what further advice to offer.

    I believe this thread on XDA is the thread I followed to backup...as for the "are there ROMs?" question....that's answered in the FAQ, which is a forum sticky.
    tinkoh likes this.
  3. tinkoh

    tinkoh Lurker
    Thread Starter

    With terminal emulator, your phone has to be vertical (rather than it's normal horizontal) or it won't work. Once in that app, you can press your 'menu' softkey to gain access to the keyboard.

    It take me a while to get it done
    I have to set screen auto rotation setting then menu option appear
    I have to test change few setting in the soft keyboard
    then the soft keyboard really appear

    Before today I was struggling with Android Terminal or this Terminal emulator
    by copy command from text editor on to this application !!

    Thanks again
  4. tinkoh

    tinkoh Lurker
    Thread Starter

    Please see the above reply on help on Teminal Emulator
    and I shall continue on the original post starting with
    2.4. Run Terminal Emulator

    Please refer to http://forum.xda-developers.com/showthread.php?t=1015005&highlight=viewpad+7

    2.5 Or using Run ADB shell
    Here is some of my trials

    C:\viewpad>adb shell
    $ su

    #cat /proc/mtd
    cat /proc/mtd
    dev: size erasesize name
    mtd0: 00500000 00020000 "boot"
    mtd1: 00200000 00020000 "misc"
    mtd2: 00080000 00020000 "splash"
    mtd3: 00500000 00020000 "recovery"
    mtd4: 00500000 00020000 "ftm"
    mtd5: 01a00000 00020000 "hidden"
    mtd6: 00060000 00020000 "dbgmsk"
    mtd7: 0a000000 00020000 "system"
    mtd8: 00200000 00020000 "misc2"
    mtd9: 05800000 00020000 "cache"
    mtd10: 0ab80000 00020000 "userdata"

    cat /dev/mtd/mtd0 > /sdcard/boot.img
    cat /dev/mtd/mtd1 > /sdcard/misc.img
    cat /dev/mtd/mtd2 > /sdcard/splash.img
    cat /dev/mtd/mtd3 > /sdcard/recovery.img
    cat /dev/mtd/mtd4 > /sdcard/ftm.img
    cat /dev/mtd/mtd5 > /sdcard/hidden.img
    cat /dev/mtd/mtd6 > /sdcard/dbgmsk.img
    cat /dev/mtd/mtd7 > /sdcard/system.img
    cat /dev/mtd/mtd8 > /sdcard/misc2.img
    cat /dev/mtd/mtd9 > /sdcard/cache.img
    cat /dev/mtd/mtd10 > /sdcard/userdata.img

    [or edit in text editor and copy on to Terminal emulator]

    That should do the Stock backup of original stock recovery image
    [hint: this refer to recovery.img which another post say to change name
    of orirecovery.img as not to confuse the files]

    2.6 Copy and Change Permission
    (I use MyPhoneExplorer to copy file over)
    # chmod 755 /system/bin/flash_image
    (verify via
    C:\viewpad>adb shell
    $ su
    ls -l /system/bin/flash_imagePermission denied
    ls -l /system/bin/flash_image
    ----rwxr-x root root 26172 2011-05-29 17:08 flash_image

    2.7 Replace with clockwork stock recovery image

    If you have problem with command
    flash_image recovery /sdcard/cwrecovery.img
    error writing recovery: Permission denied
    [hint: do a su command in front before this command]

    2.8 Boot to Clockwork stock recovery image

    Power off and Power on with both vol key pressed and released
    a) You will see 'enter recovery' text
    b) Clockwork Menu appear

    If only see a) then press reset button and again
    flash_image recovery /sdcard/CWrecovery.img

    For b) press the vol button to Select 'Backup & Restore'
    But the UP/DOWN button always jump 2 steps.
    Try this
    "looks like pressing down moves one and then releasing the button goes another."

    My action is to press both volume button but release one to get to
    the menu that you want

    Then press power button to select
    (If press menu button then screen go blank so press reset button)

    Once vol and power button to Select 'Backup & Restore' followed by 'Backup'
    Press power again to activate backup

    you may need at least 300+Mb SD card free
    I think may advice to clear cache before backup

    The backed up ROM should be located in: /sdcard/clockworkmod/backup/date&time/

    Once backup done, use backspace key to go up top menu
    Select to "boot"

    2.9 Either use "USB storage" or other method
    copy those backup into PC as secondary backup

    Now I am prepare to go into level 3.
  5. tinkoh

    tinkoh Lurker
    Thread Starter

    Actually I back to level 0.1
    My existing 4G SD card is full

    0.1 Prepare new SD card using miniTool Partition

    I have another 16Gb and I am planning again to partition into 2
    [or 3 partitions? Is there other application or ROM that run on separate partition?]

    (It will be first partition Fat 12Gb and second partition 2G Ext2)
    [Or can I partition second partition ext3 or FAT32? again I still thinking
    is there any other application or ROM that need another partition]

    (Presently, in my case The second partition is for link2SD)
    [App] Link2SD - xda-developers

    0.2 factory reset viewpad 7
    0.3 restore original ROM or to new ROM
    0.4 ROOT and install link2SD,app2SD and others

    Hope to get some replies/suggestions before I do it in these few days

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