It seems I was right to purchase a shorter micro-USB cable. Now the output of `cu -s 1500000 -l /dev/cuaU0' displays correctly.
I am still unable to boot from the micro-SD card. I had succeeded once when the emmc was partially damaged, even installing openbsd on it alas at the time support was minimal. I created my micro-SD card in the most canonical way: https://pastebin.com/9C3cgr6N And here is the result/output when trying to boot the chip: With empty SD card slot: https://pastebin.com/kYNusksB With SD card inserted: https://pastebin.com/cfesASbm Is there no way to boot from an SD card without using tools available only on either Windows or Linux ? Reference links : ARM SoC official documentation - https://wiki.t-firefly.com/en/Firefly-RK3399/ OpenBSD official arm64 documentation / installation notes - https://www.openbsd.org/arm64.html - https://ftp.openbsd.org/pub/OpenBSD/7.4/arm64/INSTALL.arm64 -- Sylvain Saboua www.saboua.xyz
