ICX7450 lost IP address after firmware update to 08.0.30h and serial console shows no signs of life

[techdep]

Hi,
I've upgraded the firmware of our ICX7450-24P (primary image) and after reboot the switch works normally but it is no longer reachable at his IP address.

The serial console shows no signs of life after connecting to it with a Wirenest Console Cable (for use with ICX7250, ICX7450 ICX7750 Switches aftermarket replacement for 50-1000122-01 https://www.amazon.com/Wirenest-Console-Brocade-ICX7250-Switches/dp/B0BF5Z5X8Z ) and with a tested USB to serial adapter. 

Do you have any suggestions for getting the console back?

Can a factory defaults reset fix it?

Is there a way to start with the secondary image without interacting with the serial console?

Many thanks in advance.

[BenBeck]

Have you confirmed the console works on another switch? I am not familiar with that cable. If there is no output from console *and* we know the console cable works correctly, the box is likely dead. 

[techdep]

Thanks for the immediate reply.
We don't have any other switch with the mini-usb connector so we don't know if the cable is good or not.
We can't find the original cable for purchase.
The box is functional from a network point of view, the only thing not functioning is the serial connection.

[BenBeck]

Got it. My hunch would be that the box is likely fine then and the cable may be suspect. Are you seeing the console in device manager and able to get the correct COM port?

If FastIron is actually running, you could trying connecting it to another switch and see if there is information in LLDP neighbor tables. There could be an IP there and you could try telnet/ssh. 

With that said, it may be stuck at bootmon, but very hard to say unless we can get access. 

[techdep]

I use linux so no device manager but with minicom the status bar say "Offline".

No LLDP info about the switch.

Do you know where to buy the right cable or a tested alternative?

A factory defaults reset is dangerous?

We have no particular configuration on the switch, no VLAN etc.

Many thanks!