Recovery Help Needed for Storage Options Scroll 7 Plus

Discussion in 'Jellybean' started by Hibtek, Dec 22, 2013.

  1. Hibtek

    Hibtek Member

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    Hi all,

    I have a Storage options 7" tablet running 4.1.1, which is stuck in a boot loop, the last thing that was done to it as far as I know was the "system" folder was restored, I do not know how this was restored, although I suspect it was just a copy through adb, but the permissions were not updated prior to a reboot!

    now the tablet just shows the loading screen and then reboots.

    I have got hold of another identical tablet, but im not sure how to make a backup of the working one and then restore it to the broken one.

    I can get the broken tablet to the recovery screen and can see the ADB sideload option, which I tried, but it seems to fail the certificate verification? then installation is aborted, im not sure the file I am trying to restore is the correct format or contains the correct file/structure

    Can anyone offer any advise?

    Is what im trying to do possible?

    Is it possible to run a script to change the permissions of the system folder, with a separate bin folder to run the command?

    Thanks fot any help

    Chris

    Edit: Both tablets seem to be rooted
     
    Last edited: Dec 22, 2013
  2. tpaine

    tpaine Senior Member

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  3. Hibtek

    Hibtek Member

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    that's great, I now have a working tablet again, now I can see what the original issue was, there is no wireless option.

    The list from system goes:

    Wireless & Networks <-- Section Header
    Data Usage
    More.....
    DEVICE <-- Section Header

    There is no Wi-Fi section

    can you offer any assistance on that?

    Thanks again for the Permissions fix :)

    Chris
     
  4. Hibtek

    Hibtek Member

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    I can ADB shell on to it, and one thing I have noticed is that I do not get a user logon bit, all I get is

    #

    but on the other tablet I get

    root@android#

    there is also about a 40mb difference in the free space, both tablets have been factory defaulted many times, but I don't know if that would make any difference?


    a mount command shows this
    # mount
    mount
    rootfs / rootfs rw 0 0
    tmpfs /dev tmpfs rw,nosuid,relatime,mode=755 0 0
    devpts /dev/pts devpts rw,relatime,mode=600,ptmxmode=000 0 0
    proc /proc proc rw,relatime 0 0
    sysfs /sys sysfs rw,relatime 0 0
    none /acct cgroup rw,relatime,cpuacct 0 0
    tmpfs /mnt/asec tmpfs rw,relatime,mode=755,gid=1000 0 0
    tmpfs /mnt/obb tmpfs rw,relatime,mode=755,gid=1000 0 0
    /dev/block/nandd /system ext4 rw,nodev,noatime,user_xattr,barrier=0,data=ordered 0 0
    /dev/block/nande /data ext4 rw,nosuid,nodev,noatime,user_xattr,barrier=0,journal_checksum,data=ordered,noauto_da_alloc 0
    0
    /dev/block/nandh /cache ext4 rw,nosuid,nodev,noatime,user_xattr,barrier=0,journal_checksum,data=ordered,noauto_da_alloc
    0 0
    /dev/block/vold/93:72 /mnt/sdcard vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0702,a
    llow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
    /dev/block/vold/93:72 /mnt/secure/asec vfat rw,dirsync,nosuid,nodev,noexec,relatime,uid=1000,gid=1015,fmask=0702,dmask=0
    702,allow_utime=0020,codepage=cp437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
    tmpfs /mnt/sdcard/.android_secure tmpfs ro,relatime,size=0k,mode=000 0 0

    could I back up the info from the working tablet?

    Broken Tablet
    D:\CobyADB>adb shell
    # df
    df
    Filesystem Size Used Free Blksize
    /dev 176M 68K 176M 4096
    /mnt/asec 176M 0K 176M 4096
    /mnt/obb 176M 0K 176M 4096
    /system 503M 328M 175M 4096
    /data 1G 63M 1G 4096
    /cache 251M 4M 247M 4096
    /mnt/sdcard 5G 12K 5G 4096
    /mnt/secure/asec 5G 12K 5G 4096
    #

    Working Tablet
    root@android:/ # df
    df
    Filesystem Size Used Free Blksize
    /dev 176M 68K 176M 4096
    /mnt/asec 176M 0K 176M 4096
    /mnt/obb 176M 0K 176M 4096
    /system 503M 344M 159M 4096
    /data 1G 502M 678M 4096
    /cache 251M 4M 247M 4096
    /mnt/sdcard 5G 2G 3G 4096
    /mnt/secure/asec 5G 2G 3G 4096
    /mnt/extsd 7G 517M 6G 4096
    root@android:/ #
     
    Last edited: Dec 22, 2013
  5. tpaine

    tpaine Senior Member

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    You can backup the system partition like we do on coby 7042:

    adb shell
    su
    mkdir /sdcard/dump

    busybox tar -cvf /sdcard/dump/7042_system.tar /system

    then use either adb pull to put them on your pc, or mount the tablet with the pc.


    Since you mentioned adb sideload from your recovery, you may be able to use this method to copy the system backup to the "bad" tablet:

    http://www.androidtablets.net/forum...recovery-coby-allwinner-via-command-line.html

    BTW, I spent 2 years at RAF Bentwaters near Ipswich and enjoyed the area.
     
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  6. Hibtek

    Hibtek Member

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    I think I have found something.....

    I get an IO error on some files, is this fixable?

    @:/system/etc #dir
    dir
    stat failed on ./camera.cfg: I/O error
    -rw-r--r-- root root 4039 2013-12-21 22:59 3g_dongle.cfg
    -rw-r--r-- root root 846 2013-12-21 22:59 3ginfo.gz
    -rw-r--r-- root root 189310 2013-12-21 22:59 apns-conf.xml
    -rw-r--r-- root root 3999 2013-12-21 22:59 audio_effects.conf
    -rw-r--r-- root root 2899 2013-12-21 22:59 audio_policy.conf
    drwxr-xr-x root root 2013-12-21 21:56 bluetooth
    drwxrwxr-x root root 2013-12-21 21:59 bluetooth2
    drwxr-xr-x root root 2013-12-21 22:05 ppp
    drwxr-xr-x root root 2013-12-21 22:04 security
    -rw-rw-rw- root root 3187 2013-12-21 22:59 system_fonts.xml
    drwxr-xr-x root root 2013-12-21 22:03 usb_modeswitch.d
    -rwxr-x--x radio system 224 2013-12-21 22:59 usb_modeswitch.sh
    -rw-rw-rw- root root 844 2013-12-21 22:59 vold.fstab
    drwxr-xr-x root root 2013-12-21 22:05 wifi
     
  7. tpaine

    tpaine Senior Member

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    Yep, looks like your camera has problems. That may be the the cause of your problem or the result of software problems. Maybe someone else can say for sure.
     
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  8. Hibtek

    Hibtek Member

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    This is what is listed on the working device.

    root@android:/system/etc # dir
    dir
    -rw-r--r-- root root 4039 2012-12-31 05:47 3g_dongle.cfg
    -rw-r--r-- root root 846 2012-12-31 05:47 3ginfo.gz
    -rw-r--r-- root root 125961 2012-12-31 05:47 NOTICE.html.gz
    -rw-r--r-- root root 189310 2012-12-31 05:47 apns-conf.xml
    -rw-r--r-- root root 3999 2012-12-31 05:47 audio_effects.conf
    -rw-r--r-- root root 2899 2012-12-31 05:47 audio_policy.conf
    drwxr-xr-x root root 2012-12-31 05:47 bluetooth
    -rw-r--r-- root root 5643 2012-12-31 05:47 camera.cfg
    -rw-r--r-- root root 167 2012-12-31 05:47 chrome-command-line
    -r--r----- bluetooth bluetooth 935 2012-12-31 05:47 dbus.conf
    drwxr-xr-x root root 2012-12-31 05:47 dhcpcd
    -rw-r--r-- root root 12947 2012-12-31 05:47 event-log-tags
    -rw-r--r-- root root 3977 2012-12-31 05:47 fallback_fonts-ja.xml
    -rw-r--r-- root root 3977 2012-12-31 05:47 fallback_fonts.xml
    -rw-r--r-- root root 124 2012-12-31 05:47 g.prop
    -rw-r--r-- root root 25 2012-12-31 05:47 hosts
    -r-xr-x--- root shell 1755 2012-12-31 05:47 init.goldfish.sh
    -rw-r--r-- root root 4620 2012-12-31 05:47 media_codecs.xml
    -rw-r--r-- root root 8727 2012-12-31 05:47 media_profiles.xml
    -rw-r--r-- root root 730 2012-12-31 05:47 mkshrc
    drwxr-xr-x root root 2012-12-31 05:47 permissions
    drwxr-xr-x root root 2012-12-31 05:47 ppp
    drwxr-xr-x root root 2012-12-31 05:47 security
    -rw-r--r-- root root 3187 2012-12-31 05:47 system_fonts.xml
    drwxr-xr-x root root 2012-12-31 05:47 usb_modeswitch.d
    -rwxr-x--x radio system 224 2012-12-31 05:47 usb_modeswitch.sh
    -rw-r--r-- root root 844 2012-12-31 05:47 vold.fstab
    drwxr-xr-x root root 2012-12-31 05:47 wifi
    root@android:/system/etc #

    if I try to list the missing files I get the below

    # dir NOTICE.html.gz
    dir NOTICE.html.gz
    NOTICE.html.gz: I/O error
    # dir permissions
    dir permissions
    permissions: I/O error
    # dir hosts
    dir hosts
    hosts: I/O error
    dir dbus.conf
    dbus.conf: I/O error


    which is why I guess the other programs and wireless does not work :-(

    Anyone know of any possible fixes?

    Thanks

    Chris
     
  9. Hibtek

    Hibtek Member

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    well I sort of fixed it, renamed the etc folder and copied the one from the other tablet, set the permissions and rebooted, I can no log on via adb and get a proper prompt, and can also get on the wireless network, I have a wireless button now :)

    only down side is most the apps crash, google apps crashes upon putting my user name and password in, browser just closes soon after opening it, about 10 seconds

    but still, thanks for the help, its a lot further than a giant paper weight

    any clues for installing apps on again via SD card?

    I thinks its something to do with some com. packages?

    Oh well :)
     

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