Hi guys, can you help me? I really like KO2
But after I updated the 1.1.1OS system firmware,
It ended up freezing and I felt like there was no response for about 10 minutes. 
So I decided to shut it down and restart it, and the result was great, it wouldn’t start. The update page on the official website also cannot recognize the device, and KO2 has a black screen.
Tried some methods, but still doesn’t work. The computer and data cable were replaced for testing. Batteries and cables were also used for testing and all results were the same
During testing I accidentally discovered that by holding down the [ record ] + power buttons, I could access the interface displayed on the web page.
But after clicking [Restart] and restarting, there is still no response.
I’m wondering, is it because of a previous update that caused KO2 to crash into [recovery mode] or something like that? ? ?
Does KO2 require a system file or other startup file to reboot and enter normal mode? Or is there any hidden shortcut key to get him into normal mode?
Every time I power on the KO2 like this, the computer makes a [beep] sound. I can see both drivers for EP133 in device manager. Does this prove that there is no problem with its hardware?
I’m just guessing, but I’m not sure. I have uploaded a video to the attachment.
The official hasn’t replied to my email yet, so I’d like to ask everyone about this question.
Have any friends encountered the same problem? I don’t know how to fix it. If not, I’m really unlucky. Thank you in advance for helping me despite your busy schedule 
https://youtu.be/OLzPEyAqTko