Port Error,, LED status are RED on both appliances

Question

hi, 
 i have XG430 in HA mode, it is with firmware version 17.5.14 MR-14. 8 port Flexi card is also installed on both appliance. on appliance with Serial no. C4207AXXXXXX port 3 is not coming up. when i plugged cable in it then port remain down.. all ports (Except Flexi Ports)on both appliances showing RED LED status. in System and admin logs i did not see any error. i restarted the appliances but status remain same. it seems hardware issue. Please help me troubleshoot this issue. how can i do hardware diagnostic test. i also want to upgrade firmware from 17.5 to latest please also guide me for this

emmosophos · Answer

Hello Madni, 
 Thank you for contacting the Sophos Community. 
 Please do not include the S/N of the Firewalls on the posts, I have altered it already. 
 If you haven't already I would recommend you to open a case with support to get this investigated, when doing so make sure you follow this post for best practices when opening a support case. 
 You can try running this Ethernet card . 
 The appliance should be shut down before installing them, also make sure your Fleximodule is one of the ones in this list , and mention the model in the ticket. 
 The logs to check for this are: 
 csc.log, applog.log networkd.log and syslog.log 
 Regards,