Watchguard Firebox X700E Install - Freezing while POST

[agrozdanov]

Hello Everyone, and Happy New Year!

As CurryX (Topic: Firebox X750E Install - Working), I am having WatchGuard Firebox X700E, and I had pfSense working on it, and since there is no more x 32 bit support, I wanted to switch to OPNSense.

The way pfSense has been installed, as well as BIOS has been flashed is as CurryX has described into its post.
I have installed the OPNsense-19.7-OpenSSL-nano-i386 on a CF- card using Rufus, and bootup the device with the card inside. It does the mem- test, and starts the POST but hangs on the position on the attached image.

Could you please, give some suggestions, and help so to resolve the issue.

Thanks, and Best,