Have Firmware Files for Zenithink ZT280 C91 2N?

Discussion in 'Zenithink ZT280 C91 & C91 Upgrade' started by louis82, Apr 25, 2013.

  1. louis82

    louis82 Member

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    Hi there,

    I need to upgrade my android tablet to ice cream sandwich or jellybean, I have not been able to find the firmware files to upgrade the firmware, does anyone have the files or know where I can download it from?

    your help is much appreciated
     
  2. uplade3

    uplade3 Super Moderator Staff Member

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    I moved this here so that maybe the right people can find this thread and help you out. :)
     
  3. omarahum

    omarahum Senior Member Developer

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    There is no Jelly Bean ROM for the ZT-280's or ZT-282's...

    The last official ICS ROM for the ZT-280 C91 H1_2n is the 0314 ICS 4.0.3 ROM....

    http://www.zenithink.com/UploadFile/temp/ZT280_H1_2n_3n_3a_C91_Android4.0_0314.rar


    You may be interested in trying Pas's altered ICS ROM - [ROM] ZeniBasic ICS v1.2 28/02/2013 - SlateDroid.com (Remove the ZT282.* files from the zt-update folder and remember to move the files and folder from the ZT-280 C91_2n folder into the zt-update folder... I have not tried this ROM as I think Gingerbread is more stable and uses the 512MB RAM more efficiently.)
     
  4. alexyong92

    alexyong92 Member

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    May i know the Gingerbread rom you mention above, where can i download? i bought the tablet of 2n version. I also think that Gingerbread more stable, but can't find any source to download. Help.
     
  5. omarahum

    omarahum Senior Member Developer

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    Last edited: Aug 8, 2013
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  6. alexyong92

    alexyong92 Member

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    erm, but may i know that which kernel you using? your frequency is running on 800Mhz or 950Mhz?
     
  7. omarahum

    omarahum Senior Member Developer

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    My tablet doesn't boot up with the 950MHz kernel, it gets stuck on the logo.... I am using 900MHz with 2GB data partition....
     
  8. guyvstewart

    guyvstewart Member

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    omarahum - I d/l the rar file, unzipped, and still don't know what files in that file to put in the zt-update folder. There are 23 files in the rar file, and the Readme.text file says "If you C91 type is 2n, please copy these 4 files in the folder "2n' to zt-update directore". The problem is that it doesn't identify which 4 of the 23 files I should put in the zt-update folder.

    Here is the data on my ZT280:

    (From Sticker)

    Model – ZT280H12NC91M512F8
    Serial Number – SD1111161101N******

    (From Device)

    Model: ZT280
    Android Version: android 2.3.4
    Kernel Version: 2.6.34 root@android #2483
    Build Number: b01ref-eng 2.3.4 GB.b01ref.2011094 eng.root.20110924.132957 test-keys
     
  9. omarahum

    omarahum Senior Member Developer

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    You need to use the zt-update folder that's in there and add the files/folders from the 2n folder into that one, then copy that zt-update folder onto your sdcard.....
    So in the zt-update folder you should have:
    media - folder with version.txt in it, file is copied to the media partition...
    command - tells the recovery what to do
    data.zt280.tar.bz - files for the data partition
    media.zt280.tar.bz - files for the media partition
    system.patch.zt280.tar.bz - small patch of files for the system partition
    system.zt280.tar.bz - main files for the system partition
    ZT280.kernel - kernel used when your tablet normally boots up
    ZT280.recovery - kernel/recovery used when you boot into flash mode to flash your tablet
    ZT280_H1_2n_C91_Android4.0_0313_V2.8.txt - Really not needed, just tells you what ROM the files in this zt-update folder are from...
     
  10. guyvstewart

    guyvstewart Member

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    There is no "zt-update" folder in that file.

    Here is what I tried.

    Full FAT32 format on a 16gb micro sd card.

    1. made a "zt-upgrade" folder on the sd card.
    2. made a "media" folder on the sd card and copied the version.txt file into that.
    3. copied the other files into the zt-upgrade folder on the sd card.

    My "zt-update" folder on the sd card looks like this:

    media\version.txt (this is the media folder with the .txt file in it)
    command
    data.zt280.tar.bz
    media.zt280.tar.bz
    system.patch.zt280.tar.bz
    system.zt280.tar.bz
    ZT280.kernel
    ZT280.recovery

    After the camera/power on, I get:

    "camera key pressed"
    "prepare to enter mmc update mode”
    “system update start...”
    “do not touch screen, recovery will do a calibration”
    "skip recovery"
    "kernel start"
    “green droid”

    and then a blank screen


    Now what? Or do I now have a neat looking paperweight
     
  11. omarahum

    omarahum Senior Member Developer

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    Strange, the rar file should look like this
    Code:
    /ZT280_H1_2n_3n_3a_C91_Android4.0_0314.rar
     /ZT280_H1_2n_3n_3a_C91_Android4.0_0314
      /android_firmware
       /2n
        /media
         version.txt
        ZT280.kernel
        ZT280.recovery
        ZT280_H1_2n_C91_Android4.0_0313_V2.8.txt
       /3a
        /media
         version.txt
        ZT280.kernel
        ZT280.recovery
        ZT280_H1_3a_C91_Android4.0_0313_V1.17.txt
       /3n
        /media
         version.txt
        ZT280.kernel
        ZT280.recovery
        ZT280_H1_3n_C91_Android4.0_0313_V2.12.txt
       /zt-update
        command
        data.zt280.tar.bz
        media.zt280.tar.bz
        system.patch.zt280.tar.bz
        system.zt280.tar.bz
       Readme.txt
       UpdateInfo.txt
      /touch_firmware_for_3a
       /zt-update
        command
        firmware.touch
        ZT280.kernel
        ZT280.recovery
        ZT280_H1_3a_TP-Patch_0305.txt
       Notice for 3a User.txt
    Are you sure you named the folder zt-update and not zt-upgrade?

    Try to add these files from the Zenithink FTP and see if it helps:
    Unpack the four zt280.* files and add those four files to the zt-update folder -
    ftp://zenithink.cn:10021/pub/dyliao/zt-280/boot/20120105/H1/2n/H1_2n.rom.tar.bz2
    Download and add the four logo files to the zt-update folder -
    ftp://zenithink.cn:10021/pub/dyliao/zt-280/logo/batt_charge.logo
    ftp://zenithink.cn:10021/pub/dyliao/zt-280/logo/batt_low.logo
    ftp://zenithink.cn:10021/pub/dyliao/zt-282/logo/20120214/boot.logo
    ftp://zenithink.cn:10021/pub/dyliao/zt-282/logo/20120214/boot_update.logo

    So then you should have a complete ROM to flash:
    Code:
    /zt-update
        /media
            version.txt
        batt_charge.logo
        batt_low.logo
        boot.logo
        boot_update.logo
        command
        data.zt280.tar.bz
        media.zt280.tar.bz
        system.patch.zt280.tar.bz
        system.zt280.tar.bz 
        ZT280.boot
        ZT280.kernel
        ZT280.recovery
        ZT280.rom
        ZT280.sd
        ZT280.spl  
        ZT280_H1_2n_C91_Android4.0_0313_V2.8.txt
    PS - When it says "skip recovery", it means the tablet can't find the ZT280.recovery and/or command file in the zt-update folder of the sdcard..... If it's not a problem with the sdcard, it could be the files are corrupted or something (either during the download or when unraring it), it's recommended you use 7zip to uncompress the rar download....
     
    Last edited: Oct 5, 2013

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