Zenithink Zepad C91 Andoid 4.03 USB problems

Discussion in 'Zenithink ZT280 C91 & C91 Upgrade' started by OnMu, Feb 19, 2012.

  1. OnMu

    OnMu Member

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    Hi.

    I have a Zenithink Zepad C91 Andoid 4.03.
    It will not communicate with my 2 laptops via USB.
    When connected I get an error message.

    My OS on the laptops are Windows Vista and Windows 7.

    Can somebody help me please?:confused:

    OnMu

    Netherlands.
     
    Last edited: Feb 19, 2012
  2. OnMu

    OnMu Member

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    Problem solved! :)

    Thnx anyway.

    OnMu.
     
  3. hverheijen

    hverheijen Member

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    Have the same problem,can anyone help
    kr hein
     
  4. jnnewton

    jnnewton Member

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    Well, would you be so kind as to share how you solved it?
     
  5. Androidinabox

    Androidinabox Senior Member

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  6. userbe1155

    userbe1155 Senior Member

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    Guess he don't care now his is working eh? Makes you wonder why bother trying to help people when they can't even answer you. A thankyou every now and then from some people wouldn't go amiss.

    Sent from my M9701 using Android Tablet
     
  7. andyjwang

    andyjwang Member

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    I installed the SwiFTP server on the C91 and FileZilla client on win 7. Communication is much easier this way. To be able to connect it via USB you need to turn on the debugging mode on the C91. Also the win 7 must install the driver for the C91. I have not tried installing the driver yet. But try the SwiFTP first.

    Just tried the mini USB to my laptop win7. It works. You need to disconnect any other USB cables from the C91. Actually the only cable that should be connected to the C91 is the mini USB to full size USB.

    Please make sure that you have installed the Google Android SDK Tools Manager so that ADB is working.

    See below:

    C:\Program Files (x86)\Android\android-sdk\platform-tools>adb devices
    List of devices attached
    0123456789ABCDEF device
     
    Last edited: Apr 12, 2012
  8. daveat4

    daveat4 Member

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    This is a bit of a quagmire for what ought to be an easy task. I eventually tracked down the method on Zenithink's web site Zenithink look in FAQs
    I've just tried it. When you connect and power up look for a USB icon on the bottom right open this to get status then turn USB on. I can't remember the exact sequence but there were about
    3 selections needed all relatively obvious.

    Finding the Google Android usb driver is even more of a challenge. I had to download the SDK package (which is enormous) I'm waiting until Friday when I should have a fast cable internet to complete this.
    One of the folders that is created is called "Extras" (not sure when this gets made, I think maybe with Platform Tools) inside this is the USB driver. I cannot find an easy way to do this.

    Good luck
     
    Last edited: May 2, 2012
  9. dealmaster

    dealmaster Member

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    Onmu is not a very willing giver that cares about others, huh. Well, I bet you here's how he "solved" this problem, which I faced for 1 minute but quickly figured out myself on my ZT-280 C91 upgrade tablet:

    -Symptom: When miniUSB(C91)-to-USB2.0(Win PC) cable is connected, Windows OS PC (Win 7 included) displays "device driver not installed..." error and C91 tablet folder is not visible.

    -Solution: If you look back on C91 alert messages on the lower-right corner by swiping up the USB logo/icon in landscape mode, you'll find TWO following messages:

    1) "USB debugging connected": To see this, you MUST make sure that "USB debugging" is checked (enabled) from Settings -> Developer options -> USB debugging.

    2) "USB connected - Select to copy files to/from your computer.": You need to scroll all the way down to find this message. Click on that message, then hit the "Turn on USB storage" button. It will take 3 ~ 5 seconds to see an "Autoplay" window pop up on your Windows PC, detecting a new USB drive (C91). Just select "Open folder to view files" to start
    browsing the C91 folders. You can just go to Windows Explorer to find the Drive assigned for C91 root directory (drive name on mine reads "W6HD (D: )") AND the Drive assigned for SD Card ("Removable Disk (F: )" on mine) if you have one inserted into C91 SD slot. So, you can copy files to/from the C91 root directory OR SD Card inserted in C91 to your Windows PC easily!

    Thus, you likely do NOT need to install a Android USB Driver on your Windows PC, separately, if you follow the steps above. Also, as someone else posted earlier, you want to make sure that NONE of the other 2 USB ports (microUSB, USB2.0) are connected to ANY other USB cable / devices when doing this. It's certain that these 3 USB ports (miniUSB, microUSB, USB2.0) will ONLY work 1 at a time, which makes practical sense given that your Windows PC will look very confusing IF you've got 2 USB storage devices connected and you're trying to figure out which Drive letter is for which USB port (NOTE: microUSB port is NOT for USB storage sticks - it's assigned ONLY for Ethernet, i.e. for use with the microUSB-to-Ethernet cable that comes in the C91 box).

    Hope this helps everyone who's coming across this issue. My C91 is now working PERFECTLY with all ports, buttons, features, booting / power up & down, working properly. Enjoy! :)
     
    Last edited: Jun 13, 2012

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