GnatGoSplat

GnatGoSplat

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Viewing 14 posts - 1 through 14 (of 14 total)
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  • #77684
    GnatGoSplat
    Participant
    • Posts: 16

    I opened it and unplugged the battery, but that didn’t help.  I bought a SOIC-8 adapter thinking maybe the BIOS got corrupted somehow (I assumed it writes to BIOS every time dual boot is changed to the other OS).  However, my program won’t read the chip, says voltage overload.  Did you ever need to flash the BIOS?  I don’t know if I should try using a different device, or if I need to unsolder the power pin (assuming the overload is due to the programmer trying to power up everything on the same Vcc).

    #77683
    GnatGoSplat
    Participant
    • Posts: 16

    Mine is bricked same as yours in the video.  Did you ever figure out what the problem is?

     

    #71904
    GnatGoSplat
    Participant
    • Posts: 16

    Not seen it, I had a lot of issues with my V919 Core M ending up returning it. Maybe try and open it and disconnect the battery and plug it back in and then let it charge overnight.

    I was hesitant to open it, because a lot of these things that snap together just aren’t exactly the same after they’ve been apart.  So I let the battery drain, waited till no more dim glow from the LED.  Then I plugged it in and now it’s able to charge properly, LED is normal red/orange as when charging.  I let it charge till it turned green, which it did after several hours.  So now it charges normally, but still wouldn’t turn on and no signs of life other than charging.  If I press and hold the power button for a long time (10-20 seconds) and then press it again, the LED will light up orange for a few seconds.  The LED behavior is what it normally does before the screen turns on and it boots normally.  However, now it won’t boot at all.  Nothing happens.  No screen backlight comes on, nothing on the screen, and it’s not a fried backlight because I shined a bright light into the screen and don’t see anything.  I tried plugging HDMI into an external monitor, and nothing there either.

    How does a tablet with corrupt BIOS behave?  Just wondering because a few minutes before it died, I did boot into Android from Windows, which I think writes something into the BIOS flash chip since it always remembers last OS booted.  I wonder if it corrupted something when writing the boot OS to flash chip.  Does the backlight turn on if a BIOS is corrupt?  Can it still charge with a corrupt BIOS?

     

    #49332
    GnatGoSplat
    Participant
    • Posts: 16

    Booting from USB drive and then installing Windows into the existing Windows partition won’t overwrite Android.

    #44353
    GnatGoSplat
    Participant
    • Posts: 16

    Ah, good deal, she should be set then!

    #44320
    GnatGoSplat
    Participant
    • Posts: 16

    Sorry, I made a mistake; I meant to say the built-in modem is an H380-A50 which won’t work in the Western hemisphere. To use this in the Western hemisphere (the Americas), the modem needs to be swapped out with an H380-Q50. Or if she wants to stick with Windows, the modem can be swapped out for any NGFF modem. It just needs to be an H380-Q50 to work with Android.

    #44248
    GnatGoSplat
    Participant
    • Posts: 16

    Hi, there is one line that refers to the modem:

    ro.with.h380=true

    The built-in modem is a Fibocomm H380-A50.

    #42704
    GnatGoSplat
    Participant
    • Posts: 16

    Depending on your location, the 3G might not work at all.
    It only supports 900/1800 bands which means it only works on the Eastern hemisphere of the planet. The Western hemisphere (North/South America) uses 850/1900 bands.

    I was told by the modem’s manufacturer that the Fibocom H380-Q50 is a quad-band drop-in replacement for the Fibocom H380-A50 that the V919 Core M comes with and that no changes to the Android or Windows drivers would be required (quad band meaning it would work globally, including the Western hemisphere). However, I can’t seem to find a Fibocom H380-Q50 for purchase anywhere. There are other modems with LTE that would probably work in the Windows environment, but not Android since you can’t change Android drivers. Swapping out the modem requires disassembling the tablet.

    #39964
    GnatGoSplat
    Participant
    • Posts: 16

    Glatt,
    Thanks for the reply. I had already managed to root, debloat, and add Play Store to my Android V12. It doesn’t appear V13 was ever publicly released as an OTA, I wonder what has changed?
    Mine came with Windows 10 Home English out of the box and legally activated.

    Thanks for the tips, my tablet actually works quite well now under Windows 10. It only gets slightly lukewarm under normal use.

    One problem I am having, which seems not to be a serious problem, but is annoying, is the MicroSD card is frequently disconnecting and reconnecting. It seems to be random. Before, I had an autoplay setting which would display drive contents and that would make it pop up an Explorer window every time, but I changed it to “Take No Action” so now all it does is play the annoying disconnect/connect sound. Also if I have the drive open in Explorer, it closes the window. I feel like this must be a software and not a hardware issue because if I play a video stored on the MicroSD, it doesn’t do this and the video isn’t interrupted. I can also copy files to/from the MicroSD and that isn’t interrupted either.

    #38662
    GnatGoSplat
    Participant
    • Posts: 16

    Hi, there is actually a stock Android Browser hidden away. One way I found it, I think there is a Search app that I found. It lets you choose from either the stock browser (blue globe icon) or the Chinese Opera browser. I chose the stock browser and then was able to enter my own URL in the URL entry box.

    However, there may be another way, I’ll send a PM.

    #38631
    GnatGoSplat
    Participant
    • Posts: 16

    I don’t know of any way to fix the Android from the Windows section because Windows can’t access the ext4 Android partitions. You could possibly boot a portable version of Linux from a USB flash drive and access them that way.
    I would do a factory reset of the Android section to erase any previous attempts to get Play Store on there and get it back to stock. Then see if it will connect via Wifi. If it will at least do that, it can be rooted and Play Store installed.

    #38628
    GnatGoSplat
    Participant
    • Posts: 16

    I didn’t find Dasher’s firmware, but I did figure out how to root and install Google Play Store.

    First, do a factory reset to erase the Google Play Services that were already installed and are not working.

    Next, you have to root. I found these instructions on the Onda Chinese forum.
    https://translate.googleusercontent.com/translate_c?depth=2&hl=en&rurl=translate.google.com&sl=zh-CN&tl=en&u=http://www.ondabbs.cn/forum.php%3Fmod%3Dviewthread%26tid%3D69737%26extra%3Dpage%253D1%26page%3D1&usg=ALkJrhixK-TvUpvStySJ9HL3a2lbYg1P0g
    The download link with root.bat is a few posts down. I had to run it 3 times before it worked.
    When rooted, then download an APK for a file manager that has root access (i.e. Root Explorer).

    Next part is installing Google Play Store. I used PA_GAPPS Pico from here. http://www.androidrootz.com/2015/03/download-android-50x-lollipop-gapps.html
    Unzip and use Root Explorer to copy all the folders in the Core folder into /system on the tablet. I’m not sure if it’s necessary to set permissions to match the existing files, but I went ahead and set permission of all the .apk files to 0644 and folders to 0755 to match the existing ones.
    Then copy PrebuiltGmsCore.apk from GmsCore/0 folder into /system/apps. I set its permissions to 0755.
    Now when you reboot, it should install everything and Play Store should work. Mine crashed a few times at first, but it eventually started working.

    I didn’t try installing each .apk individually, since I had tried doing that last night and it didn’t work, but you could always try that.
    Let me know if you need more detailed instructions.

    #38472
    GnatGoSplat
    Participant
    • Posts: 16

    If you find it, please reply here. I need it too. Android without Play Store is useless.

    #38469
    GnatGoSplat
    Participant
    • Posts: 16

    Well, probably against most peoples’ better judgment, I bought one anyway. $319USD shipped from Aliexpress. Can’t remember the name of the seller and the Aliexpress site is currently down, but let me know if interested.

    Mine is solid. No creaks or rattles. It is a V3. Came in its original box with the factory tape cut. was not resealed so maybe the seller opened it, but looked new. Plastic covers had never been removed. First impression is it’s quite a thick and weighty device, compared to my V975i. It came with Android 5.0.1 already set to US English, but all the pre-installed apps are Chinese. I was not successful in installing Play Store, so I’ll have to keep playing with it. It came with legitimate fully activated Windows 10 Home already set to English. Out of the box, I kept getting errors about the graphics driver has stopped responding. I’ve since updated the graphics driver via Intel website and that seems to have fixed it, but not sure (there was a newer driver that specifically said it fixes this issue). It does an annoying disconnect/connect sound every time I wake it up with the power button. Not sure what’s causing that. 3G modem doesn’t seem to work with any US frequencies. Most concerning is it runs very warm if it’s even the least bit busy. It’s just lukewarm browsing the web, but can get quite hot if very busy on the edge where the buttons are. Perhaps it’s a testament to how efficient they are at transferring SoC heat to the case. My v975i never got the least bit warm. The heat does have me concerned about battery life, though too soon to see how it will be in casual usage. Seemed to get hotter in Android than Windows, but I was trying to install Play Store which may have been keeping the CPU load high.

    Also did something stupid; tried changing product key from Home to Pro to see what would happen, but didn’t make note of the old product key so I don’t know how to change it back. Anyone know what the Home product key was? The generic ones don’t work.

    So far, too soon to see how it’s going to work out.

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