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Found this thread while contemplating what box to get Dell Wyse 5070 Extended or X86-P2.
Anyway, the mini pc is made by CWWK
https://cwwk.net/products/x86-p2-software-route-n4000-j4105-j4125-mini-host-6w-low-power-consumption-quad-core-quad-thread-intelligent-hardware-fanless-energy-saving-microcomputer-computer
and there is a BIOS update here (use google translate for change log)
https://www.changwang.com/down/82.html
click on the green button from the left, it will redirect to another page with multiple versions depending on the soldered CPU.
Before flashing remember to reset the BIOS and double check the BIOS version maybe you already have F3 version
As side note, somebody over servethehome forum has a CWWK mini pc with Intel N100 with the latest BIOS version, his issue was at boot while the mini pc is connected to a HDMI to HDMI cable, but with a HDMI to DVI it boots fine. So please keep this in mind if hear some beeps.
https://forums.servethehome.com/index.php?threads/cwwk-topton-n95-n100-n200-n305-quad-nic-router-5-bios-error-beeps-and-black-screen-error.40333/page-2#post-381681
Another idea, that is not so dangerous is to install Proxmox and run opnsense as a virtual machine.
Remember there is always a risk of bricking the board when flashing, especially when you don't have any possibility to send it back for warranty
Anyway, the mini pc is made by CWWK
https://cwwk.net/products/x86-p2-software-route-n4000-j4105-j4125-mini-host-6w-low-power-consumption-quad-core-quad-thread-intelligent-hardware-fanless-energy-saving-microcomputer-computer
and there is a BIOS update here (use google translate for change log)
https://www.changwang.com/down/82.html
click on the green button from the left, it will redirect to another page with multiple versions depending on the soldered CPU.
Before flashing remember to reset the BIOS and double check the BIOS version maybe you already have F3 version
As side note, somebody over servethehome forum has a CWWK mini pc with Intel N100 with the latest BIOS version, his issue was at boot while the mini pc is connected to a HDMI to HDMI cable, but with a HDMI to DVI it boots fine. So please keep this in mind if hear some beeps.
https://forums.servethehome.com/index.php?threads/cwwk-topton-n95-n100-n200-n305-quad-nic-router-5-bios-error-beeps-and-black-screen-error.40333/page-2#post-381681
Another idea, that is not so dangerous is to install Proxmox and run opnsense as a virtual machine.
Remember there is always a risk of bricking the board when flashing, especially when you don't have any possibility to send it back for warranty
