Coby mid9740-8 Dump missing tgz file

Discussion in 'Coby Generation 3 Development' started by jmblouin, Nov 19, 2012.

  1. jmblouin

    jmblouin Member

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    I recently returned a faulty mid9742-8 and was given a 9740-8 to replace it. I rooted the device with the rootrestore.bat, made a system dump, installed cwm-recovery 6.0.1.1. That went well.

    I cannot see the internal sd card from cwm-recovery. So I purchased a external one loaded gapps-ics-20120429-signed and Tweaks-PlayStore on there. I got ahead of myself an applied the 2 zip files before making a backup to the external sd card and now the screen is inverted and the touch screen is the right direction. (sound familiar) So now I went back to my dump to start following vampires guide and discovered that I do not have a tgz file. Heres what I have. I also attach the md5 in a checksum file I made.
    mid97408dump11192012.zip
     
    Last edited: Nov 19, 2012
  2. jmblouin

    jmblouin Member

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    Ok now I really screwed up....
    So I tried this

    "You assume the risk this or any modification could possibly brick your tablet

    Ok from what I have read some of you guys have upside down screens, this usually can be fixed via MBR, aka bootloader.

    You need adb setup and working if you have a filemanger that has root access this would be great.

    anyway download bootloader files.

    9742_BOOTLOADER.ZIP

    extract some where, on your sdcard would be nice. if you want to use file manger.

    adb shell
    mkdir /sdcard/na
    mount -t vfat /dev/block/nanda /sdcard/na
    exit

    if you placed the files on sdcard, and have file manger with root access, navigate file manger to /sdcard/na/ delete script0.bin and script.bin then navigate to /sdcard/na/linux and delete u-boot.bin.

    then use file manager and copy the script0.bin and script.bin you downloaded to /sdcard/na/ and copy the u-boot.bin you download to /sdcard/na/linux you are just replacing 3 files.

    if you want to do via adb you can skip the file manager stuff and just push the files.

    adb push script0.bin /sdcard/na/

    adb push script.bin /sdcard/na/

    adb push u-boot.bin /sdcard/na/linux

    in either case reboot.

    Do not reboot until you have copied each of the 3 files to where they need to go, if using file manger do a dry run make sure you can find the files that need to be replaced, and where they go before doing anything."

    I can still comunicate with the tablet but I cannot see anything cause its fuzzy from boot of the coby screen.
     
  3. vampirefo.

    vampirefo. Senior Member Developer

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    you should know a 9742 and a 9740 are different tablets, you shouldn't use any files from a 9742 on a 9740.
     
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  4. vampirefo.

    vampirefo. Senior Member Developer

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    This is a known problem with the newer coby's they don't use a full version of busybox, so the needed compression isn't included in the busybox. two choices switch busybox, or just drop the compression and use pure tar.
     
  5. jmblouin

    jmblouin Member

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    Is it too late to do that at the point I am now?
     
  6. vampirefo.

    vampirefo. Senior Member Developer

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    Yes, you have already over written your system, there is nothing to backup, how ever you can flash one of the instable 9042 backups I made, and should fix your problem.

    place on micro sdcard

    and install via cw recovery.
     
    Last edited: Nov 20, 2012
  7. jmblouin

    jmblouin Member

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    What is the simplest way to flash a rom when the display is messed up?
     
  8. vampirefo.

    vampirefo. Senior Member Developer

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    fix the display? lol
     
  9. vampirefo.

    vampirefo. Senior Member Developer

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    where is your bootloader.img?
     
  10. jmblouin

    jmblouin Member

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    LoL I know. The screen went fuzzy after I decided(being stupid) to push the files from the 9742-bootloader.zip It is fuzzy at boot from coby to cwm-recovery to standard boot.

    My flawed logic was that the 9742-8 models had a variety of hardware for the screens and that since my problem was the same as a few 9742 tablets it would be a fix to the inverted screen. I was very very very wrong with that conclusion.
     
  11. vampirefo.

    vampirefo. Senior Member Developer

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    You just need to put your bootloader.img on your sdcard.

    once you get it there

    adb shell

    ls /sdcard

    to verify it's on sdcard.
     
  12. vampirefo.

    vampirefo. Senior Member Developer

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    once you have verified the bootloader.img is on sdcard

    download 7042_stock.zip

    extract

    place install-bootloader.sh on sdcard

    adb shell

    chmod 755 /sdcard/install-bootloader.sh

    /sdcard/install-bootloader.sh

    reboot-recovery
     
  13. jmblouin

    jmblouin Member

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    I was able to turn file sharing and copy bootloader to the internal sd card. I than unplugged it and plugged it back in typed and saw no files in there or anything.

    shell@android:/ # ls /sdcard
    ls /sdcard
    /sdcard
    shell@android:/ # ls
    ls
    acct
    cache
    config
    d
    data
    default.prop
    dev
    etc
    init
    init.goldfish.rc
    init.rc
    init.sun4i.rc
    init.sun4i.usb.rc
    initlogo.rle
    mnt
    proc
    root
    sbin
    sdcard
    sys
    system
    ueventd.goldfish.rc
    ueventd.rc
    ueventd.sun4i.rc
    vendor
    shell@android:/ #

    edit: The same thing happens when I plug in a working mid9742-8 it list nothing under sdcard when I know there are files on there.

    I figured it out by closing the /sdcard/ a typo......
     
    Last edited: Nov 20, 2012
  14. jmblouin

    jmblouin Member

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    C:\Android>adb push install-bootloader.sh /sdcard/
    60 KB/s (186 bytes in 0.003s)
    C:\Android>adb shell
    shell@android:/ $ ls /sdcard/
    ls /sdcard/
    Android
    DCIM
    Digital Editions
    LOST.DIR
    Modern_Jazz_Samba.mp3
    backups
    bootloader.img
    dump
    eBooks
    eMusicIntro.mp3
    eMusicOutro.mp3
    iStock_000004047806Large_12.jpg
    iStock_000006026216Medium.jpg
    iStock_000009221330Large.jpg
    install-bootloader.sh
    na
    rooting
    shell@android:/ $ su
    su
    shell@android:/ # chmod 755 /sdcard/install-bootloader.sh
    chmod 755 /sdcard/install-bootloader.sh
    shell@android:/ # /sdcard/install-bootloader.sh
    /sdcard/install-bootloader.sh
    sh: /sdcard/install-bootloader.sh: cannot execute - Permission denied
    126|shell@android:/ # su
    su
    shell@android:/ # /sdcard/install-bootloader.sh
    /sdcard/install-bootloader.sh
    sh: /sdcard/install-bootloader.sh: cannot execute - Permission denied
    126|shell@android:/ #
    I get this
     
  15. vampirefo.

    vampirefo. Senior Member Developer

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    adb push bootloader.img /sdcard/bootloader.img

    adb shell

    su

    mount -o remount,rw /system

    exit
    exit

    adb push install-bootloader.sh /system/bin/install-bootloader.sh

    adb shell

    su

    chmod 755 /system/bin/install-bootloader.sh

    /system/bin/install-bootloader.sh

    reboot-recovery

    Sorry so much easier on Linux, windows requires more input.
     
    Last edited: Nov 20, 2012

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