Unable to upgrade to SFOS 18.0.4 MR-4 on xg310

Question

Currently my sophos xg310 is running version SFOS 17.5.15 MR-15 , and in the update firmware section on the firewall portal i see an option to download and install SFOS 18.0.4 MR-4. It seem to download and install just fine, but after install/reboot it keep reverting back to SFOS 17.5.15 MR-15 as active image instead of the 18.0.4 . I try forcing it to boot as active image, but no luck . 
 
 Anyone else experiencing this issue?

emmosophos · Answer

Hello Naeem, 
 Thank you for contacting the Sophos Community! 
 Please open a case with Support and provide me with the Case ID. 
 To expedite and found what might be happening do the following: 
 1) Put csc in debug mode 
 # csc custom debug 
 (no output would be generated) 
 2) Upgrade to 18 MR4 or latest available. 
 3) Provide the output of the following logs: 
 csc.log, applog.log, postgres.log, syslog.log 
 4) And the output of the following commands: 
 nvram get '#'li.status nvram get "#li.master" nvram get '#'li.serial showfw cat /etc/fwtype cat /etc/fwgroup cat /etc/version system diagnostics show version-info 
 # grep syslog.log.0 | grep -e "error\|fail" | head 
 # grep "Command line: auto BOOT_IMAGE" syslog.log.0 | tail -n5 
 # hdparm -i /dev/sda 
 5) Connect a Serial Cable and get the console output 
 Regards,