Netinstall 3.20 Broken?

Routerboard 450
NetInstall 3.20
ROS 3.20-mipsbe

Serial cable is plugged in, no issues accessing the system.
NAND is Formatted
Netinstall sees the RB450

Welcome to MikroTik Router Software remote installation
Press Ctrl-Alt-Delete to abort

mac-address: 00:0C:42:2E:FD:04
mac-address: 00:0C:42:2E:FD:05
mac-address: 00:0C:42:2E:FD:06
mac-address: 00:0C:42:2E:FD:07
mac-address: 00:0C:42:2E:FD:08

software-id: BGQK-LTT key:
/5XKDevtGg0deKglcMWPqdOBsCx4pCKS1aUMyFwO0OZDNT91FbtzsgSPkIPsNcv2sOKvbVKCYsRx+csQ
32P3cB==

Waiting for installation server...

Netinstall has only the System package selected.

Clicking the Install button it flashes “installing” very quickly and then goes back to “Ready”.

I’ve used NetInstall many times before but this is the first time I have had this issue.

Tried with 3 RB450s, all are doing the same thing. Is the latest NetInstall broken?

Also, is it still possible to reload RouterOS via serial? If not, perhaps that should be put back in for failsafe reasons.