ALIX.2D : Installation of 2.3.5

[sgw]

Trying to setup at least pfsense-2.3.5 32bit on 2 old ALIX.2D boards (v0.99h) for testing HA-stuff.

They don't boot from USB stick and I don't find a boot menu or so.
I wrote pfSense-CE-memstick-serial-2.3.5-RELEASE-i386.img.gz to CF card directly, that boots, but it can't install from/to itself, right?  ;)

I am currently a bit confused: is there a way to set that up, what am I missing here?
Many howtos online are obsolete now that nanobsd is deprecated etc …
thanks ...

[dotdash]

There are still nano images for 2.3.5. Write the nano image to a CF and boot from that.

[sgw]

Sorry for not seeing this obvious solution  ::) // thank you