Switch making connection 192.168.1.100

Did you pushed this config via Central to the Switch? 

Are you sure there is no other device competing for this IP-address?

pushed via Central

This switch has no console port

That is why I am also looking for firmware, maybe can reimage device

there is no other device using this ip-address.

When I disconnect port the ip is unreachable

OK, something is odd here. You tell us the device is constantly trying to send DHCP requests in 192,.168.1.0 network.

So why is it 172.17.x.y here ?

172.17.x.y  is LAN
Switch get IP address from LAN 
The switch is getting an IP address from DHCP, I can put it on  other port and will get DHCP from there.

The question is why is switch trying to connect 192.168.1.100??

In the switch the traffic will pas, I can connect workstation and receive LAN ip address and can connect to internet.

Just can not connect to switch Web GUI and SSH console

Because this model has no console port I want to restore firmware and hope this solves problem

https://support.sophos.com/support/s/article/KB-000042318

Did you follow that KB document exactly?

Then your switch should have 172.16.16.239 or a DHCP assigned one. Try to update firmware image without pushing a different config at first.

that is the problem.

The switch is not available in Central and I am unable to connect by web or SSH

then there is the problem that I can not find firmware on website from Sophos, that is my other question  

 Sophos Cloud Switch CS101-8FP Download recovery image 

Likely the switch is broken. The DHCP packets, you localize, are not DHCP. They are TFTP Packets, which are also using Port 69. The Switch is looking for a TFTP Server to fetch the bootfile. 

So the easiest way would be to get the Switch replaced by an RMA. 

Otherwise, you can follow up on that one: https://support.sophos.com/support/s/article/KB-000042318?language=en_US

if there is a firmware to download?

can you please show me where to download?

I have license for switch but can not see

Recovery file found in Sophos Central > Protect Devices > Switches > Download recovery image