LarkBox and Windows 20H2 Update

Hello everyone!

I have a strange issue when updating to windows 20H2. It goes through 40% of the update, with 2 reboot in between, but suddenly around 42%, just after the second reboot, the LarkBox turn off!

It’s not a reboot, it shuts down completely.
When i turn it on, it starts the uninstall of the update, and i’m stuck to the previous windows version.

There are no hdd space issues or anything.

Any idea on how it can be solved?

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I have exactly the same issue - update has failed half a dozen times now, and Windows keeps warning me that support for the current version will end soon.
Anyone got any ideas how to resolve this?

In-place updating indeed does not work, and I wouldn’t expect too much from Chuwi on this unfortunately. You CAN however clean install 20H2 from a bootable USB-stick with the official 20H2 image from Microsoft, your license is automatically transferred: Download Windows 10 ( Be sure to backup anything important you have on there beforehand.

Note that a clean install will leave you with a couple of missing drivers, which you will need to source (or back up from your current install) and install yourself. See this thread for more info: We need LarkBox chipset drivers - MiniPC - CHUWI | Official Forum

Note of caution: I have done the above myself, and though everything seems to work ok, I am left with a couple of error messages in Windows Event Viewer: “Idle power management features on processor # in group 0 are disabled due to a firmware problem.". See also BIOS reset - Larkbox - #44 by Christy. Not sure if these errors are important, or if these weren’t even already present on 1909, but I can imagine they might have something to do with when the CPU ramps up or steps down. If any of you could confirm whether or not these Event Viewer entries are already present on your stock 1909 it would take that worry away- I would be interested to know.

I was able to upgrade from the default 1909 to 20H2. For a clean install of 20H2, it is recommended to have the engineer BIOS provided by CHUWI and keep the cooling fan running. In my view, it is presumed that the machine is down due to thermal runaway.

What BIOS?? I’m not aware of a new bios, didn’t find anything around here…


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I am assuming he means ‘factory settings’ for the BIOS here, but if there is another BIOS version out there I’d like to know!

I was provided with a BIOS by CHUWI. There is a BIOS that keeps the cooling fan running all the time. The following is the BIOS. Factory BIOS 2584% 25E3% 2582% 258B% 25E6% 25AD% 25A3% 25E5% 25BC% 258F% 25E3% 2581% 25AEBIOS.rar / file BIOS with constant cooling fan 258C% 25E3% 2581% 259A% 25E3% 2581% 25A3% 25E3% 2581% 25A8% 25E5% 258B% 2595% 25E4% 25BD% 259CBIOS.rar / file *Note I am not responsible for any problems with this BIOS. Please handle it carefully. Good luck