I just wanted to report 6.8 release is having the same issue as https://marc.info/?l=openbsd-misc&m=160224393101534&w=2 except I have a CHUWI HeroBox Windows 10 Mini PC,Intel Gemini-Lake N4100 Quad-Core Processor,8GB DDR4 256GB SSD,Expandable 2TB 2.5 Inch HDD,1TB SSD with 2.4GHz/5GHz Dual WiFi 1000Mbps/BT4.2 https://www.amazon.com/gp/product/B082VZP76P
On a 6.7 release I did syspatch and then a sysupgrade and got the entry point at: 0x1001000 error trying to boot after the upgrade was successful. -alfred