Zenithink C91 cannot Upgrade T_T - "Bad BootLoader Arguments "(null)"

Discussion in 'Zenithink ZT280 C91 & C91 Upgrade' started by sapatuButut, May 14, 2012.

  1. sapatuButut

    sapatuButut Member

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    I have problem when i want to upgrade my Zenithink c91. I already copy the image from zenithink and placed it into root folder of my sdcard.
    reset the device and press camera and power button. Android System Recovery running but there are erorrs

    "Bad BootLoader Arguments "(null)"
    unknown volume for path /udisk/factory_update_param.aml
    cant mount /udisk/factory_update_param.aml


    anyone know how to solve this problem?

    Thanks.

    Sharing is Caring!
     
  2. pdimo29

    pdimo29 Member

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    Hi, the Zenithink website suggests that you format your micro sd card (as fat32) before performing a system update. If this does not work they suggest using a smaller sd card, try 2Gb. I've performd all my updates using a 2 Gb card.
     
  3. sapatuButut

    sapatuButut Member

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    then how is the directory structure after you format the sdcard?

    thanks..
     
  4. sapatuButut

    sapatuButut Member

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    now i try with 2gb sd card...
    hope it will works... :(
     
  5. sapatuButut

    sapatuButut Member

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    it doesn't work,. I already try with 2Gb Sdcard...

    i still with error
    "Bad BootLoader Arguments "(null)"
    unknown volume for path /udisk/factory_update_param.aml
    cant mount /udisk/factory_update_param.aml"
     
  6. pdimo29

    pdimo29 Member

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    Please refer to the manufacturers website Zenithink .

    Download the official rom and follow the instructions. Your sd card should only have the one directory (zt-update) and one file (UpdateInfo). The copying of these files to your sd card should occur on your computer. Once completed transfer the microsd card to your ZT280 C91 upgrade, make sure it is completely powered down before you do this, then start up your device by pressing the power and camera buttom simultaneously until you see the updating your device message. Make sure the tablet is plugged jnto mains power before performing the update.
     
  7. benadlam

    benadlam Member

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    Tell us step by step what you've done?
     

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