Need to reflash BIOS in DnX Mode

[Jonathan]

Thanks 🙂

[norman]

Hello,

 

dont want to open new threat but i have the same problem with no USB working and cant boot into Windows (only get black Screen).

 

I tried to Flash TWRP but its failed.

Any other Way to reflash BIOS?

[Jonathan]

norman,

Did USB just stop working on its own or did you change BIOS settings first?
You don’t have Windows but what about Android? If yes is it rooted?

What’s the serial number of your tablet?

[norman]

i bought the tab and only android worked. Tried to boot into Windows…but black screen.

In Android the OTG dont work.  I dont need windows, but i need OTG in Android.

So i go into bios (there the keyboard worked = OTG worked there) and changed the settings for USB OTG (didnt know that activating means, that it doesnt worked afterwards).

I tried many thing now…only flashing the newest official rom with the manufactor tool (non rooted)

 

I also tried the things on page 1

Replacing <device> (i.e. no angle brackets)with the device name: type “fastboot -s <device name>  flash osloader efilinux-userdebug.efi” <enter>

this worked

 

 

Replacing <device> (i.e. no angle brackets)with the device name: type “fastboot -s <device name> boot recovery.img” <enter>

failed

 

tried to install TWRP but get (see attachment)

 

Attachments:

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[norman]

btw. i found this files from other location that say it can “repair” the bios without any description how to use this

bios_flasher.efi

bios_orig_signed.bin

 

can i flash this in any way?

 

 

[Jonathan]

That looks like recovery not DnX mode. Assuming the Hi8 works in the same way as the Vi10 (which is the closest hardware to the Hi8 that I have):

1. Power off your tablet.
2. Hold the volume button farthest from the power button as well as the power button.
3. You should get a boot menu, use the volume buttons to select Android and press power to select it.
4. Power down your tablet.
5. Hold the volume button closest to the power button and the power button.

With any luck you should get to DnX mode.

The files you mention are UEFI Shell based, without a keyboard you can’t use them directly…

[norman]

i can go into dnx mode…but what to do now?

[Jonathan]

The fastboot commands that didn’t work the first time, don’t forget you need the recovery.img from the Hi8 TWRP package here.

[Tschuuuls]

You were in Droidboot mode. From there you could also boot TWRP just type “fastboot flash recovery recovery.img” then select recovery with the volume keys and accept with power. <– Did that after fixing my BIOS issue.

[norman]

wow…hehehe…used the wrong recovery…

 

and how to repair the bios? Or is it only to get android working?

[Jonathan]

Tschuuuls, what took you so long? 🙂

norman, You have TWRP running now?

[norman]

yes…it´s running

[Jonathan]

Good, I think we’ll use ADB. Presumably you have ADB with fastboot etc.? I’ll package some stuff for you and post back soon…

[norman]

ok thx…i have new official BIOS (for bootable stick of course) and Rom and ADB worked on PC

[Jonathan]

Ok, please get this file and boot it in the same way as before.

[Author]

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