Nobis NB07 and DA-741QHD rooting and ROM thread

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neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Tech Specs:
Processor Type: Quad-Core Cortex A9 Processor(When I turn on the tablet it says Allwinner A31?)
Processor Speed: 1.20 GHz
System Ram: 1 GB
Hard Drive Size: 8GB
Laptop Screen Size: 7 inch
Screen Type: Capacitive Touch Display
Battery Life: 4 hours
Battery Type: 2800mAh Lithium Ion
Network Connection: 802.11b/g/n Wireless LAN
Connector Type: 1 x HDMI, 1 x Headphone, 1 x MiniUSB 2.0
Operating System: Google Android
Accessories Included: AC Adapter,USB Cable
Operating System Version: Android 4.2 Jelly Bean

This thread is a continuation of some of the discussion that was from this thread: http://xdaforums.com/showthread.php?t=2568427

While not at all high end tablets, it's always fun to see what can be squeezed out of them! As stated in the title, this thread will be regarding the following devices: Nobis NB07, Iview 774TPC, and DA-741QHD (which all appear to be the same hardware) rooting and ROMs. That should be pretty simple for now since, we currently have no ROMs and no proven root method. Some have reported success using the Kingoapp. If anyone is able to obtain root, we would like to ask that you make a copy of the firmware and upload it for those of us having trouble doing so. After doing so, we can modify it and hopefully get more our of the software.

You may also post information regarding tweaking the ROMs for these devices and other ways to make them more useful!
 
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N

neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Warning: The following may have unforseen effects including breaking your tablet to the point of being unrepairable.

Option #1, Use KingoApp Some users have reported that this did not work for them, at least one user reported that it did.
Instructions per RawX:
For the drivers the easiest method is just using Top Notch Tablets How to install ADB drivers. That worked on the first one, the second one it didn't not entirely sure why, but you can send a email to support and ask them for development drivers for the nobis tablets and they will send the ADB drivers you need. After you have the drivers installed use kingo while the tablet is in usb debug mode BEFORE plugging it into your usb port and do not turn on usb transfer. the first time after it reboots kingo will report that it was not rooted, leave it plugged in and power off and back on and it should report the root worked. This method gives you SuperSU. Both times. I've done this were for clients of mine but its pretty straight forward.
Click to expand...
Click to collapse
The working drivers for me were: VID_1f3a_PID_efe8
Please consider trying this first and give us some feedback. A word of warning though, there has been some discussion on XDA in the past that this may be malware though I'm not sure this was ever confirmed.

Option #2, Flash firmware for an alternate device that can be rooted easily. Warning!!! Currently, there is no way to get back to stock (until someone who gets root with another method makes a copy of the firmware)
Go to this website: http://www.iviewus.com/firmware788TPC/ and download the firmware. Yes, it is for another tablet. However, the tablet appears to have the same specs as ours. Once downloaded. Install the included PhoenixSuit software. Once it is running, click the button at the bottom right to update the software to the newest version (this may not be required). Then, plug in your tablet using the usb port and install the drivers. I used google and found them all within minutes. Once the software recognizes your tablet go to the firmware tab where you have extracted the .img file and select the file. Next, click upgrade to upgrade your tablet (it has instructions to help your tablet be recognized if you are having difficulty). Once the new firmware has been flashed, then download the file RootFromOTA.zip that can be found on various places such as XDA. Move the file onto an external SD card. Then, go to settings -> backup & reset -> Recovery Mode. Your tablet will restart. Once it does, select the bottom option to install from SD card. Install the RootFromOTA.zip and then reboot. Once rebooted, install the supersu app or another root application of your choice.

Credits: As above to RawX
Congrats... You're rooted.
 
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N

neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Mods

Currently, I've managed to get great battery life out of my tablet by installing kernel tuner and changing the settings as such:
Governor: Ondemand (default is fantasys)
Max: 1200 MHz (Default is 1200 MHz)
Min: 240 MHz (Default is 120 MHz, but I had trouble with usability at this setting and Ondemand)

I also recommend setting wifi to turn off when the screen is off and turn off autosync.

This seemed to give me a very useable system but with greatly improved battery life. Doing the above and a few other tweaks here and there have made my battery life so that it drains by about 1% overnight when not in use. I also seem to get better battery life while using the tablet. I haven't had any trouble playing games either.
 
Hippie459MN

Hippie459MN

Senior Member
Apr 2, 2010
1,192
405
St. Francis, Minnesota
www.hippie459mn.com
neatojones said:
Option #2, Flash firmware for an alternate device that can be rooted easily. Warning!!! Currently, there is no way to get back to stock (until someone who gets root with another method makes a copy of the firmware)
Go to this website: http://www.iviewus.com/firmware788TPC/ and download the firmware. Yes, it is for another tablet. However, the tablet appears to have the same specs as ours. Once downloaded. Install the included PhoenixSuit software. Once it is running, click the button at the bottom right to update the software to the newest version (this may not be required). Then, plug in your tablet using the usb port and install the drivers. I used google and found them all within minutes. Once the software recognizes your tablet go to the firmware tab where you have extracted the .img file and select the file. Next, click upgrade to upgrade your tablet (it has instructions to help your tablet be recognized if you are having difficulty). Once the new firmware has been flashed, then download the file RootFromOTA.zip that can be found on various places such as XDA. Move the file onto an external SD card. Then, go to settings -> backup & reset -> Recovery Mode. Your tablet will restart. Once it does, select the bottom option to install from SD card. Install the RootFromOTA.zip and then reboot. Once rebooted, install the supersu app or another root application of your choice.

Congrats... You're rooted.
Click to expand...
Click to collapse

I am assuming the camera is not working using this method or did you figure it out?

And also, do you have a link to the drivers you used off hand or what did you search for to find them?
 
N

neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Hippie459MN said:
I am assuming the camera is not working using this method or did you figure it out?

And also, do you have a link to the drivers you used off hand or what did you search for to find them?
Click to expand...
Click to collapse

Nope, still haven't gotten the camera working. We are missing some config files still. Do you need the camera drivers or the tablet drivers?

The camera drivers are : sp2518 and sp0838, though I also see a module being loaded called cam_detect

I don't recall where I got the adb usb drivers for the tablet, but it would probably be a good thing to mention in this thread so if you have them, let me know and I can add it to one of the top posts. If you're having trouble finding them, I'll remove my drivers and go back through the process to find them again.
 
N

neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Hippie459MN said:
Looking for the tablet drivers. I am about ready to tap out on this thing for a while. lol Its driving me crazy.
Click to expand...
Click to collapse

OK. The drivers I used were probably: VID_1f3a_PID_efe8 (or something similar)
You can either google that or try downloading the firmware for TP718AQ here: http://www.agptek.com/forum/viewtopic.php?f=22&t=948

Remove all prior drivers for the tablet. Plug it in and tell Windows to use the drivers from the extracted file you download (Will extract to TP718AQ_Update_Firmware\USB Driver).
Sometimes I have to do a little dance with restarting the device and my computer to get it to recognize it.

As a last resort you could try this: http://www.xda-developers.com/andro...r-solves-your-adb-driver-problems-on-windows/

Let me know if you have any problems.
Good Luck!
 
Last edited:
Hippie459MN

Hippie459MN

Senior Member
Apr 2, 2010
1,192
405
St. Francis, Minnesota
www.hippie459mn.com
Ok, I officially give up trying to root this thing. Stupid windows will not install the drivers in both the links you provided and I cant get windows to even try to install anything after removing them then I got the android ADB drivers to install but still zero luck. All rooting apps fail. Hopefully someone will post the image of their rooted NB07. A few claim to have rooted it just fine but I cant win with this thing.

All I want is to be able to run link2sd and a few other apps that require root. This is officially the longest I have owned an un-rooted android device. lol
 
R

RawX

Member
Jan 2, 2014
25
4
I'm the one that got the root working using kingo, so for the drivers the easiest method is just using Top Notch Tablets How to install ADB drivers ( I would post a link but I don't have 10 posts yet on XDA)

That worked on the first one, the second one it didn't not entirely sure why, but you can send a email to support and ask them for development drivers for the nobis tablets and they will send the ADB drivers you need. After you have the drivers installed use kingo while the tablet is in usb debug mode BEFORE plugging it into your usb port and do not turn on usb transfer. the first time after it reboots kingo will report that it was not rooted, leave it plugged in and power off and back on and it should report the root worked. This method gives you SuperSU. Both times I've done this were for clients of mine but its pretty straight forward.
 
Hippie459MN

Hippie459MN

Senior Member
Apr 2, 2010
1,192
405
St. Francis, Minnesota
www.hippie459mn.com
Well, I have decided that for now this tablet of mine is un-rootable. I must have tried with 5 or 6 different drivers about 20 times with each with Kingo. I even tried that other program that is all in Chinese that loads some BS app on to your phone with no luck. So, for now, I am going to give up but if anyone has any other ideas or wants me to try something or they have for sure figured out how to root it, let me know as I am happy to help the best I can. :)

Edit: Oh yeah, Dont know how much this will help anyone but here is some more specific specs on the Nobis NB07 tablet I pulled off it with Hardware Info 3.0.0. Feel free to put the link in the first or second post if you want. Maybe it will help a little bit more.

http://www.hippie459mn.com/nobis_nb07/index.html

:good:
 
Last edited:
N

neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Hippie459MN said:
Well, I have decided that for now this tablet of mine is un-rootable. I must have tried with 5 or 6 different drivers about 20 times with each with Kingo. I even tried that other program that is all in Chinese that loads some BS app on to your phone with no luck. So, for now, I am going to give up but if anyone has any other ideas or wants me to try something or they have for sure figured out how to root it, let me know as I am happy to help the best I can. :)

Edit: Oh yeah, Dont know how much this will help anyone but here is some more specific specs on the Nobis NB07 tablet I pulled off it with Hardware Info 3.0.0. Feel free to put the link in the first or second post if you want. Maybe it will help a little bit more.

http://www.hippie459mn.com/nobis_nb07/index.html

:good:
Click to expand...
Click to collapse

Thanks to the work of someone on another forum, I have now got TWRP working on our device and am hoping we will soon have a CM working on it as well. Check back in the near future for further details. Maybe if you can't have a rooted stock, we can get a fully functional CM.
 
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neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Hippie459MN said:
I am assuming you need to have root to flash the TWRP recovery correct. This is good news. Would love to have more info on it. Are you working with people on this site or another site? I would love to follow along. :)
Click to expand...
Click to collapse

On another site for now. Just PM's at the moment so not much to follow yet. But, all you'll need is the Phoenixsuit to install it, so you won't have to root your tab first. You'll have root on the new ROM. You'll have to have drivers fully working though. Once fully working I'll link to the site so people can get the files and hopefully we can get this guy some donations for his work.
 
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Hippie459MN

Hippie459MN

Senior Member
Apr 2, 2010
1,192
405
St. Francis, Minnesota
www.hippie459mn.com
Awesome! I would go right to CM on this and skip the whole rooting the stock firmware. Would be nice to be able to root the stock firmware though then things would be so much easier. Think the camera will be working on the CM build? If not no big deal but would be nice to have them working.

Keep me (us) posted on the progress. :D
 
N

neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Hippie459MN said:
Awesome! I would go right to CM on this and skip the whole rooting the stock firmware. Would be nice to be able to root the stock firmware though then things would be so much easier. Think the camera will be working on the CM build? If not no big deal but would be nice to have them working.

Keep me (us) posted on the progress. :D
Click to expand...
Click to collapse

Not sure about the camera yet. I have CM booting but no touch yet, so this will be the first task. I'll keep everyone posted.
 
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neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Currently, we have CM working with no touch screen/camera. I'm not sure what else all isn't working because I'm waiting on my OTG cable to come in for further testing to see what all is going to be required to get the touchscreen going. Right now, it appears we my be looking at compiling our own drivers which could take some time to do. I think we'll get it eventually, but it may take some time. If you don't need touchscreen or camera, it could be working right now. :)
 
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neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Sorry for no updates for a while. My work has been delayed on this since I have a son who is sick and in the pediatric ICU. I'll get back to work when things calm down for me.
 
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neatojones

Senior Member
Dec 28, 2010
157
49
Springfield, IL
Just a question, Hippie...
On the original ROM, can you see your device in ADB? If you can, and type "adb shell" do you get root? If you have adb access but not root, can you try typing sh and see what happens?

Also, could you try loading the rootfromOTA.zip and see if you can get a printout of the error log if possible?
Also, I tried installing this from the recovery on a similar ROM and it acted like it failed. I went back into the ROM and used adb and was able to get root using vroot or kingo...I don't remember which. This may be worth a shot.

Interestingly, I have been looking for alternative ways to root and found this (but we need to find a way to get to the bootloader):http://whiteboard.ping.se/Android/Rooting

I think that the method to get to bootloader is to turn off the tablet, then hold down the back button while tapping the power button 5 times. But, I also googled and found a method for getting to fastboot from adb in android without root as well which may work.
 
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    neatojones
    Tech Specs:
    Processor Type: Quad-Core Cortex A9 Processor(When I turn on the tablet it says Allwinner A31?)
    Processor Speed: 1.20 GHz
    System Ram: 1 GB
    Hard Drive Size: 8GB
    Laptop Screen Size: 7 inch
    Screen Type: Capacitive Touch Display
    Battery Life: 4 hours
    Battery Type: 2800mAh Lithium Ion
    Network Connection: 802.11b/g/n Wireless LAN
    Connector Type: 1 x HDMI, 1 x Headphone, 1 x MiniUSB 2.0
    Operating System: Google Android
    Accessories Included: AC Adapter,USB Cable
    Operating System Version: Android 4.2 Jelly Bean

    This thread is a continuation of some of the discussion that was from this thread: http://xdaforums.com/showthread.php?t=2568427

    While not at all high end tablets, it's always fun to see what can be squeezed out of them! As stated in the title, this thread will be regarding the following devices: Nobis NB07, Iview 774TPC, and DA-741QHD (which all appear to be the same hardware) rooting and ROMs. That should be pretty simple for now since, we currently have no ROMs and no proven root method. Some have reported success using the Kingoapp. If anyone is able to obtain root, we would like to ask that you make a copy of the firmware and upload it for those of us having trouble doing so. After doing so, we can modify it and hopefully get more our of the software.

    You may also post information regarding tweaking the ROMs for these devices and other ways to make them more useful!
    View
    2
    N
    neatojones
    Warning: The following may have unforseen effects including breaking your tablet to the point of being unrepairable.

    Option #1, Use KingoApp Some users have reported that this did not work for them, at least one user reported that it did.
    Instructions per RawX:
    For the drivers the easiest method is just using Top Notch Tablets How to install ADB drivers. That worked on the first one, the second one it didn't not entirely sure why, but you can send a email to support and ask them for development drivers for the nobis tablets and they will send the ADB drivers you need. After you have the drivers installed use kingo while the tablet is in usb debug mode BEFORE plugging it into your usb port and do not turn on usb transfer. the first time after it reboots kingo will report that it was not rooted, leave it plugged in and power off and back on and it should report the root worked. This method gives you SuperSU. Both times. I've done this were for clients of mine but its pretty straight forward.
    Click to expand...
    Click to collapse
    The working drivers for me were: VID_1f3a_PID_efe8
    Please consider trying this first and give us some feedback. A word of warning though, there has been some discussion on XDA in the past that this may be malware though I'm not sure this was ever confirmed.

    Option #2, Flash firmware for an alternate device that can be rooted easily. Warning!!! Currently, there is no way to get back to stock (until someone who gets root with another method makes a copy of the firmware)
    Go to this website: http://www.iviewus.com/firmware788TPC/ and download the firmware. Yes, it is for another tablet. However, the tablet appears to have the same specs as ours. Once downloaded. Install the included PhoenixSuit software. Once it is running, click the button at the bottom right to update the software to the newest version (this may not be required). Then, plug in your tablet using the usb port and install the drivers. I used google and found them all within minutes. Once the software recognizes your tablet go to the firmware tab where you have extracted the .img file and select the file. Next, click upgrade to upgrade your tablet (it has instructions to help your tablet be recognized if you are having difficulty). Once the new firmware has been flashed, then download the file RootFromOTA.zip that can be found on various places such as XDA. Move the file onto an external SD card. Then, go to settings -> backup & reset -> Recovery Mode. Your tablet will restart. Once it does, select the bottom option to install from SD card. Install the RootFromOTA.zip and then reboot. Once rebooted, install the supersu app or another root application of your choice.

    Credits: As above to RawX
    Congrats... You're rooted.
    View
    2
    N
    neatojones
    Hippie459MN said:
    I am assuming you need to have root to flash the TWRP recovery correct. This is good news. Would love to have more info on it. Are you working with people on this site or another site? I would love to follow along. :)
    Click to expand...
    Click to collapse

    On another site for now. Just PM's at the moment so not much to follow yet. But, all you'll need is the Phoenixsuit to install it, so you won't have to root your tab first. You'll have root on the new ROM. You'll have to have drivers fully working though. Once fully working I'll link to the site so people can get the files and hopefully we can get this guy some donations for his work.
    View
    2
    N
    neatojones
    The CM porting has been hitting a snag. I have TWRP 100% working on the tab right now. But, that doesn't get us much without a ROM to flash to it. I could probably get CM10.1 going on it with touch screen and everything working, but have really been focusing on 10.2 (mostly) and a little of 11. CM 10.1 should be easy enough because we already have drivers compiled for our device. However, we will likely have to extract the software from our original tablet from a couple of modules to get everything working on CM 10.2 or newer. This is because the actual hardware for our touchscreen is pretty common, but the implementation appears to be device specific (and therefore, also the drivers). This is a problem because we don't have a rooted version of our original firmware. I do have a firmware (actually 2) that is rooted with working touchscreen but I haven't found a way to extract the data from the module to be able to compile it. The gentleman on Slatedroid who compiled CM has got a working driver for our rear facing camera, so it is a real possibility that it could be working at least, but the front facing one would take more work. It seems that he is not really wanting to make compatibility packs for any new devices right now (he's already maintaining about 10 or so). If I get some free time in the near future I might ask him for some help with setting up my own build of CM and things will be looking better. For, now...I'm just chasing several leads hoping each one will get us somewhere.

    In the end, we REALLY need the original firmware to get things going. I have devised a plan to do so, but it's not a sure things and it's going to take a few days. So, for now...I guess it's just a waiting game while I keep experimenting with things.
    View
    1
    R
    roots-bloody-roots
    Ok, this is a little ironic but it turns out we had root access to the tablet all along since post #2 by the OP. It only took me four months to realize that.
    Below, in PART 1, is how NOT to root the tablet (if you choose not to do so) and, in PART 2, how to root it by hand (if you still want to root it).

    PART 1: How to access everything on the tablet, including /system without rooting it.

    As mentionned in the by the OP. There is an image of the firmware of a similar tablet that can be obtained on www: iviewus.com/firmware788TPC/ Get the file.

    Burn the image onto an SD card with PhoenixCard using the startup option.

    Boot the tablet from the SD card: Insert card, press (and keep pressed) the return button, turn the tablet ON, release the return button as soon as you see the A31 logo.

    Troubleshooting:
    The A31 boots slightly differently from the other Allwinner chipsets. More info here: linux-sunxi.org/BROM if you are interested. You should see an "IVIEW" logo during the boot and you should be able to acess two of the partitions on the SD card once it is booted. If you see the NOBIS logo and get an error saying damaged SD card, you did not boot from the SD, try again and make sure you are not booting in "Quick Boot Mode".

    You might not realize it yet, but you are essentially done. Congratulations!

    What just happened is that you booted the boot partition on the SD card which, as it turns out, loads a rooted kernel and ramdisk to your RAM. The nice thing is that the rest of the system is mounted from your own NAND partitions. This is why everything looks the same. Nevertheless, you can have full access to your tablet using ADB.

    If you want to modify /system on your NAND. Connect the tablet to your computer via USB and fire up adb. The following commands will enable writing to /system:

    Code: 
    adb kill-server
adb root
adb remount

    Enjoy.
    Note that the tablet is NOT rooted and that restarting it will bring you back to normal. You might decide that you do not need to root it any more at this stage. Otherwise you can use your full access to permanently root the tablet by hand.

    PART 2: How root the tablet by hand

    Install superSU from the Play Store with your tablet booted normally. It will complain about missing su binaries if you try to start it. We will fix that in the following.

    On your computer, access the 805 MB system partition of the SD card (an ext4 filesystem, mounted from /dev/mmcblk0p7 on my Linux) and copy the su binary from the /xbin directory onto your computer (in the same directory where you have adb). Alternatively, get the su binary from any other source you trust.

    Restart the tablet as in PART 1 and follow all the instructions to get rw on /system.
    Run the following code in your shell (bash or CMD.exe):

    Code: 
    adb push su /system/xbin/su
adb shell
chown 0:0 /system/xbin/su
chmod 6755 /system/xbin/su
ln -s /system/xbin/su /system/bin/su
adb reboot

    Done, you are rooted. After restart, you can let superSU update the su binary and you are all set.

    PS. I am not allowed to post links, I am too new here. I hope it is not an issue.
    View

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