Img burn to raspberry pi 3B+ ,doesnt work

[KeerBot]

I'm trying to simulate an Opentrons OT2,
according to this tutorial: https://github.com/Opentrons/opentrons-integration-tools/tree/main/raspberry-pi

I have brand new raspberry pi 3 b+ and power supply, and 16GB microsd. I flashed according to the instructions.
connected to the router and it didn't boot (I am connected to the router and can't see it)
also - A regular Raspberry OS DID work on the same hardware. and accessed the network (and got an IP address from the router) - therefore it is NOT a hardware issue. I tried mulitiple SDcards with no success

What can be the problem ? Theres no boot

[binfordn]

How long did you wait for it to boot? I've found that it can take up to 10 minutes for the device to appear in the Opentrons app the first time it boots up. You can also follow the boot logs if you connect the Raspberry Pi to a monitor.