This is because the Switch 10e lineup includes different revisions, whose bios are not backward compatible. And this error occurs due to mismatch with the device.
Sorry for writing on this old thread.
Are there any new tools that allow you to unlock this bios in order to boot uefi64? thanks
Intel don’t release any flash tool other than FPT. And FPT doesn’t work due to SPI lock. We should find a way to bypass the lock. Or you can use an external flasher.
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Thank you for your reply.
what can I try to do to bypass the this spi lock?
I tried the version you made for the helviio user but it gives me an error about spi locked
Don’t know. Each error needs a separate approach. Had not found any info about error 286. Maybe you could go through the process described in posts 314-321 and share a screenshot?
No wonder. Same for helviio.
I think I should’ve deleted the archive.
In device manager I don’t see any spi controller. In the PCI section of RWE I only see these peripherals 
Me neither.
Seems to be a different lock. A lock by efi driver. Don’t know what to do about this.
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damn Acer 
.
Thanks anyway for your availability