Can't update Octopus v1.1 firmware

I've got a minion I just built running RatOS and the BTT Octopus v1.1 board. In the setup wizard I'm currently on "CONTROL BOARD PREPARATION". I've comiled the firmware, downloaded, copied it to the sdcard. It's called firmware.bin , but when in the wizard I hit "Check board status" it never does anything. I can't get past this screen. I've tried a couple of times, each time the control board is renaming the firmware.bin file to FIRMWARE.CUR. I did a diff and the two files are identical. So the board is picking up the firmware file it appears. But klipper isn't seeing it? In the ui I get an error "mcu 'mc': Unable to connect".
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