Bricked Allview Wi901N windows 10 tablet - General Questions and Answers

Hello,
i have a big problem with an Allview windows 10 tablet, during windows 10 reset i got a blue screen and my tablet got stuck into a boot loop restarting after windows logo appears. It didnt boot from windows usb stick that i made with rufus in multiple ways with different settings and when i was trying to get it boot from usb i accidentally disabled XHCI or EHCI from bios ,the attached keyboard does not respond, otg cable connected keyboard does not respond, touch not working.
Any solution will be greatly appreciated,
Thank you.

The only option I can suggest is to open it up, desodder the battery (as it's soldered to the motherboard). Wait for a couple of minutes (maybe even hours) and then solder the battery back in and see if the BIOS has been reset.
This may work similarly to taking out the CMOS battery and putting it back in.
I can provide you with this info as I've just stumbled upon your post having the same issue as you. I haven't yet tried this method as I don't have the tools required to desolder the battery right now but I'll post an update as soon as I can to let you know if it worked.
There's also a debug header available on the board but no resources online on how to use it.

Related

MK809IV: USB device not recognized

Hello, I have a problem with my MK809IV stick. It seems to be a hardware problem or a feature of my device, maybe you can help me. I can't flash any rom to my stick, because when I plug it in my PC, I have a message "USB device not recognized". I tried different methods, such as pressing Reset key or making contact between 8 and 9 pads of NAND - no result. At first case I can see an Android picture on the screen (sure, if I connect it to TV), at second case nothing really happens: even CPU stay cold, no picture on sreen.
As I know, it's a problem of devices (not only MK809IV), which have PCB, marked CYX_809III V5_0 20140510.
Please, help. My device works bad, there is a low FPS in films, and I can't flash any ROM. I spent a lot of hours trying different methods and searching for information.
Same here
Ancharas said:
Hello, I have a problem with my MK809IV stick. It seems to be a hardware problem or a feature of my device, maybe you can help me. I can't flash any rom to my stick, because when I plug it in my PC, I have a message "USB device not recognized". I tried different methods, such as pressing Reset key or making contact between 8 and 9 pads of NAND - no result. At first case I can see an Android picture on the screen (sure, if I connect it to TV), at second case nothing really happens: even CPU stay cold, no picture on sreen.
As I know, it's a problem of devices (not only MK809IV), which have PCB, marked CYX_809III V5_0 20140510.
Please, help. My device works bad, there is a low FPS in films, and I can't flash any ROM. I spent a lot of hours trying different methods and searching for information.
Click to expand...
Click to collapse
I have the same device, having the same issues, and i have tried almost all what you have done so far. Really looking forward, if some one could help with this. I want to install linux on this tv stick.
Look at this thread:
w w w.freaktab.com/showthread.php?15752-CYX_809III-V5_0-20140510-%28CX-919-MK809IV-clone%29-not-connecting-to-PC-as-USB-device-for-flashing-rooting
It is almost the same device (same PCB, but sell as a "CX919"). We are able to boot on linux with an sd-card, but (up to now) I cannot make the wifi works (it is a uncommon wifi module: ESP8089).

Elephone P3000s not working

My phone only shows the the elephone 2 e sign when I turn it on. I have tried pressing the on and volume key when I turn it on but nothing happened. I have followed some instructions on the elephone manufacturer site about installing drivers to my computer and then trying to reinstall the firmware. Unfortunately my computers (I have tried on three different ones) does not identify that a device is connected to the computer. Therefore I can't proceed to install the driver as according to my computer it is not installed. I have tried 2 different leads as well. I would be grateful for some help as I have no idea where to go from here.
Facing a similar issue, and since there's still no reply to this thread, I would like to add up a few findings I have on this matter to maybe help others and get helped.
My P3000S is also reaching the Elephone logo and displays it for a minute and then restarts, repeating the process (aka boot-loop).
The same happens whether it is connected or not connected to the charger/computer through a USB cable. (I've tried new cables but that's not the case).
When disconnected I can stop the boot-loop only by holding down the on/off button for a few seconds (or removing the battery of course).
When connected to the the charger or computer through the USB cable I have no way to stop the boot-loop (holding down on/off just restarts it).
Now with the battery removed..:
If I connect it to the charger/computer, though the charging red light turns on normally, I can't turn on the phone using the on/off button.
However, when connected through USB to a windows computer, I can see in the device manager that, right when I connect the phone it shows up as "Mediatek Preloader USB VCOM Port" under COM ports group, for 1 second and then disappears as if it was disconnected. There's no repetition here I have to manually hold down the on/off button or disconnect and reconnect the phone from the cable to cause this to happen again.
So, I am unable to flash anything nor turn the phone on because I practically only have 1 second of its presence in my devices list.
Also, I have tried all possible combinations with the volume up/down keys and the on/off button in order to enter recovery mode, with no success..
In case anyone has faced something similar or has any ideas on a possible fix on this phone please feel free to reply.
At last a reply to my initial message. Unfortunately it was someone with the same problem as me. I took out a paypal case against the person I bought the phone from and eventually they repaired it. Unfortunately they never told me how. To make matters worse it broke again within 2 months. The phone is now sat in a draw doing nothing. I have given up on it and will never buy another Elephone phone again.

Cenovo MiniPC

Hi guys. Help greatly appreciated.
I bought a Cenovo MiniPC from Gearbest 2 months ago and from day 1 I've been getting blue screen errors. I immediately reported this to Gearbest and as you can imagine with the time difference between here (Sweden) and there (China) I was getting slow responses. Cut a long story short they 1st offered me a $20 refund from a $90 device, I accepted at the time as the errors have not appeared for over a week and thought it could be the end of it. 2 weeks after this the errors came back and it wasn't just blue screen on startup but it would freeze up during a session. I again reported this demanding for a full refund and they refused. I opened a dispute with PayPal and after a while they offered me a further $20 which I refused, they then sent me an email and said if I close the dispute they will give me a full refund. I was hesitant whether this was a scam but I went along with it and to their word I got a refund 3 days later.
After I got my refund I thought I may as well try and fix it myself now so I started in BIOS and fiddled with some switches for the emmc, one was 'secure erase', I don't know what was going through my head or what I thought the outcome would be but I enabled it and restarted. Now it just boots into BIOS and I am guessing the reason is that the emmc is now blank.
So ive now got a minipc with a blank emmc, I have loaded a bootable copy of Windows 10 setup to a usb and forced a usb boot in the bios but nothing happens.
I have opened the case to look for a emmc card I can take out and put in my laptop to reformat with an os but I couldn't find anything, there was a metal grill on one side that looks like it is hiding stuff and it is impossible to lift the grill off.
There is a tf card reader on the side so i am thinking that I can extract a Android image onto the card and boot from the card but I am not sure how and whether it will work.
Can i get some assistance in this please.
James
Hello, I've got same problem, 0xc000025 error code, arrived my tentative to upgrade the PC to Windows 10 (the PC arrived with 8.1 installed)
No way to boot my USB in the bios. Have you solved? Someone can help?
try and format the usb stick to 4k sectors before using the win10 media creator, think that's how i did it
Thank you for replying and sorry for the late response.
Have you got the same mini pc?
How do you format stick into 4k sectors? What format did you use (Fat32,NTFS...)?
fat32, in windows format dialog box its "allocation unit size" set to 4096
to boot from usb the stick has to be recognised as bootable before u can run the bios command to override boot device
yep i figured it out thanks. ive now got another problem and this is totally my fault if it cant be fixed...
in bios i unchecked the option to use integrated graphics so now when i boot i see nothing
maddogbarber said:
fat32, in windows format dialog box its "allocation unit size" set to 4096
to boot from usb the stick has to be recognised as bootable before u can run the bios command to override boot device
Click to expand...
Click to collapse
jamos316 said:
yep i figured it out thanks. ive now got another problem and this is totally my fault if it cant be fixed...
in bios i unchecked the option to use integrated graphics so now when i boot i see nothing
Click to expand...
Click to collapse
intesting, daft thing to do tho, u could try borrow a usb gfx card?
Does anybody know how to reset the bios, because I've disabled the usb ( stupid x 10000 ) and I cannot use the usb ports (mouse and keyboard)
same problem here... I've disabled xhci support and no USB right now. The problem is that removing the battery does not make the bios to default.
I've still got the issue with no picture. I need to reset the bios but not sure how. Or maybe I can connect it to my laptop and get it working from there
yo. just got myself a cenovo mini pc 2, and it runs windows 10, but it's not legit. That bothers me, so I want to run android or linux. You guys mention that it's running a BIOS, but i think perhaps the mini pc 2 is running non-BIOS/EFI, because there's no preboot screen, and USB drives don't boot up at all.
Hi !
Did anyone got a chance at installing another os ?
I have a Cenovo mini pc 2 and I had troubles with sound. I had no issue for a week or two and then (maybe windows update, who knows) the sound would switch to the speakers output instead of the hdmi one. (it was plugged on my tv) so I decided (stupidly) to uninstall the audio components with the hope that windows would redetect and reinstall them with better drivers. Well, that didn't work and now in my device manager are two unknown components which don't work and I have no sound at all. If anyone found the global drivers for the device, or could make me a screenshot of their devices panel...
In the meantime I would probably try my luck to install openelec or kodibuntu on it but I couldn't manage to boot on bios. Did anyone tried using the Advanced startup option of windows 10 ?
Driver Package Cenovo MiniPC2
nyaneko said:
Hi !
Did anyone got a chance at installing another os ?
I have a Cenovo mini pc 2 and I had troubles with sound. I had no issue for a week or two and then (maybe windows update, who knows) the sound would switch to the speakers output instead of the hdmi one. (it was plugged on my tv) so I decided (stupidly) to uninstall the audio components with the hope that windows would redetect and reinstall them with better drivers. Well, that didn't work and now in my device manager are two unknown components which don't work and I have no sound at all. If anyone found the global drivers for the device, or could make me a screenshot of their devices panel...
In the meantime I would probably try my luck to install openelec or kodibuntu on it but I couldn't manage to boot on bios. Did anyone tried using the Advanced startup option of windows 10 ?
Click to expand...
Click to collapse
I have my Cenovo MiniPC2 since 2 Days and its working without Problems. Because the first what i'am doing with ia new PC is a backup, i have a Driver Backup too
Use Driver Backup and ask me for a Link to the Driver Package because i cant post outside Links before i spamed xda with antoher 9 postings without links.... sorry.
Maybe i can post a Textlink
mega.nz/#!d8hgzYpa!vI5_giRvMQoWLrNZeIAua3dYNL1J3JFiWOHSK_PPcaE
mega.nz/#!wkJWXbyS!dvVQ4JRn3r2GWAANtQ99purCUrbsNdoWxq_fx8x8gKo
SomeoneYouNeverKnow said:
I have my Cenovo MiniPC2 since 2 Days and its working without Problems. Because the first what i'am doing with ia new PC is a backup, i have a Driver Backup too
Use Driver Backup and ask me for a Link to the Driver Package because i cant post outside Links before i spamed xda with antoher 9 postings without links.... sorry.
Maybe i can post a Textlink
mega.nz/#!d8hgzYpa!vI5_giRvMQoWLrNZeIAua3dYNL1J3JFiWOHSK_PPcaE
mega.nz/#!wkJWXbyS!dvVQ4JRn3r2GWAANtQ99purCUrbsNdoWxq_fx8x8gKo
Click to expand...
Click to collapse
I still have the problem with no graphics.
I know the problem as I disabled the onboard graphics in bios... I know **** head move.
I have tried to remove the lead leading from the bios to the motherboard in hopes it will reset it but nothing.
Is there anything I can do from USB do you think? Such as flash a new bios.
yanger said:
yo. just got myself a cenovo mini pc 2, and it runs windows 10, but it's not legit. That bothers me, so I want to run android or linux. You guys mention that it's running a BIOS, but i think perhaps the mini pc 2 is running non-BIOS/EFI, because there's no preboot screen, and USB drives don't boot up at all.
Click to expand...
Click to collapse
I have a Cenovo Mini PC 2 with 2GB/32GB. BIOS/EFI/set-up is accessed via pressing F2 after boot. Sometimes it will accept the F2 request, sometimes not. Not sure if this is an issue related to the keypress timing after boot being critical, or the unit being generally fussy (maybe selection of which of the 4 + 1 USB sockets for keyboard is critical?). Only wandered around the BIOS settings a few times but there was all manner of Android-specific options available.
Strangely, when the F2 key is accepted, a message is flashed briefly on the screen saying "Esc key pressed" or similar, as if the "Esc" key was the BIOS access key.
The NexBox T11 InsydeH20 UEFI / BIOS / set-up options are near identical to the Cenovo Mini PC 2. There is a video walkthough of the Netbox T11 Setup Utility although it does not mention the very first screen and options seen when F2 is pressed. The Cenovo Mini PC 2 very first screen titled "First Page" can be viewed at
i68.tinypic.com/35ciec7.jpg
and the subsequent video walkthrough of the T11 "Setup Utility" can viewed at
youtube.com/watch?v=WVdXbjsF5-g
nyaneko said:
Hi ! Did anyone got a chance at installing another os ?... I have a Cenovo mini pc 2... I would probably try my luck to install openelec or kodibuntu on it but I couldn't manage to boot on bios. Did anyone tried using the Advanced startup option of windows 10 ?
Click to expand...
Click to collapse
I initially had issues attempting USB boot of Macrium Reflect with my Cenovo Mini PC 2. Eventually solved by one or more amendments of changing brand of USB stick, using Rufus to generate the bootable USB stick via formatting to FAT32 with 4096 bytes cluster size, and disabling fast UEFI in settings. USB stick was inserted into the Mini PC 2 and UEFI / BIOS was accessed by pressing F2 immediately after boot. From the first setting screen, "Boot Manager" was selected and the USB device was visible and able to be highlighted to boot from.
Hi,
Can someone please share the wireless drivers for the minipc2?
I did a fresh windows 10 install and can seem to enable wifi and device manager the wireless adapter shows an yellow triangle.
I've tried with SomeoneYouNeverKnow drivers but it didn't solve this issue...
Thank you
geoair said:
Hi,
Can someone please share the wireless drivers for the minipc2?
I did a fresh windows 10 install and can seem to enable wifi and device manager the wireless adapter shows an yellow triangle.
I've tried with SomeoneYouNeverKnow drivers but it didn't solve this issue...
Thank you
Click to expand...
Click to collapse
All drivers can be found via URL below. Restore with freeware app DoubleDriver.
mediafire.com/file/aabn24xzj40jsc8/Cenovo++back+up+drivers+CherryTrail.rar
boozet.org/dd.htm
xdevi1 said:
All drivers can be found via URL below. Restore with freeware app DoubleDriver.
mediafire.com/file/aabn24xzj40jsc8/Cenovo++back+up+drivers+CherryTrail.rar
boozet.org/dd.htm
Click to expand...
Click to collapse
Thank you.
Season greetings
Graphics drivers for cenovo pc mini 1
I Had all the issues which is in this thread so i took the steps as follows it came with windows 10 dual booting android when i looked on the partitions it was a joke several all using up space i entered bios disabled secure emmc created a windows 8.1 32 bit usb boot disk using rufus selecting gpt also fat 32 16k sectors , it worked once i entered install i delete those partitions all of them until i had a single 32 gig partition which i installed a clean windows 8.1 leaving me 20 gigs after install now the problem i have like a idiot i forgot to take a note of the device id vendor etc of the display which does not even appear in the basic adaptor tree in device manager ,, i have tried several drivers but none worked the website who made this device needs a good slap, no drivers no support but a nice device with much potential and why lock the bios to 32bit? what is wrong with these people in the mean time
if anyone has the drivers for this device please share them i would be grateful and if needed i can make a guide on how to turn this little device in to a full windows computer its locked on windows 8 in the bios and most settings in the bios is locked to but i have obtained bios editor tools for this american trends i will give it a try later once i have full gpu control the rest i do not care as it will be used with bluetooth but intel hd drivers or the device if would be appreciated
Kind Regards

Problem with TFMTKAW01232 TrekStor Surftab theatre L15 MTMT8163

Hello people,
I bought a used TrekStor Surftab theatre L15 TFMTKAW01232 and the MT8163 in the hope that I can repair it.
The problem with the device is that it is not possible to boot and after pressing the Volume + and On button for some time, I get into the boot menu. Here I have the choice of recovery, fastboot, norma bootl. No matter which selection I make, the tablet remains dark and nothing happens next.
I got myself a USB-A to USB-A cable and searched for the original Rom and found it. When trying to flash it with the SP_Flash_Tool I get the error "ERROR: S_BROM_CMD_JUMP_DA_FAIL".
What I notice is that the device seems to stay connected via USB only very briefly. I have already installed several drivers and in the tool it also shows me
the connected device "MediaTek USB Port_V1633 (COM4 on)".
Do you have any other idea how I could solve the problem?
Hi,
could you help me please?
I have here same model as you mentioned for repair.
A reverse polarity power source was attached to it, which resulted in a burned chip.
That chip I am unable to identify because it was destroyed.
I am attaching a photo of the mainboard where I've marked the position of that chip.
Would it be possible for you to have a look at your board and take a picture of the chip for me?
I would really appreciate it!
Thank you!

Help me to Identify what pins to short (amlogic tv box)

I have an amlogic tv box that i want to revive. Its a generic chinese box.
With a lot of help of the community i managed ti identify the board, Is the one from this link:
https://www.szjytx.com/?id=13299
The one from the link (as you can see by the photos i posted) is the same one physically. The only thing i couldn't identify was the real processor (the manufacturer was faking it), because when i removed the heat ink, the painting on the chip got erased.
So i started to experiment with it.
I couldn't find any ROM for the processor that that chinese page says (S905L-B)
After various tries , I could install twrp (for the s905w processor)
The first working one was one for the "x96 mini", it worked but it only showed 1/4 of the total screen.
Then i tried one for the tanix tx3 mini, and it worked like charm, i could backup and restore roms.
---------------------------------------------------------------------------------------------------------------------------------------------------------
After that introduction, here's the problem:
The box has no reset button, so the only roms i could try were from twrp update zips.
So, as i did with the recovery, i tested first installing a "x96 mini" rom, and i had the same result, a bootable rom showing 1/4 of the screen.
The next was to try a "tanix tx3 mini" rom, and after the flash it never booted again (not even the logo), so i think is bricked at bootloader level. Te power led powers on, but no image.
I think my only hope to revive it is to flash a rom trough the amlogic burn tool.
The problem is that the device can't be recognized by the tool.
i only had partial luck /really strange behavior) with a malfunctioning usb male to male cable, testing it sometimes it got recognized for a few seconds (of course i couldn't install any rom with that little gap).
With a brand new male to male usb cable it gets nothing.
This new cable works, because the power led of the device turns on, but it doesn't get recognized by windows or the tool.
I know that there's a method to force the box to go to download mode, by shorting two pins, but i cant tell what pins are the correct ones, o some hint to it.
I attached pictures form both sides of the board.
https://imgur.com/a/EBYsTYk
Thanks in advance
I am having the same problem. Did you solve the problem?

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