firmware not showing to update !!!!!!

Hi satyabrata bastia

Sophos releases firmware updates through a phased mechanism described here:

https://community.sophos.com/sophos-xg-firewall/b/blog/posts/firewall-firmware-release-process-and-timeline

That is why you are getting no update, however, you can manually upgrade the firmware from Sophos Licensing Portal as per the below link 

Refer the link: https://docs.sophos.com/nsg/sophos-firewall/19.0/Help/en-us/webhelp/onlinehelp/AdministratorHelp/BackupAndFirmware/Firmware/FirmwareDownloadFirmware/index.html#download-firmware 

Please make sure you are taking regular backups of the Sophos XG firewall reference link : https://docs.sophos.com/nsg/sophos-firewall/19.0/Help/en-us/webhelp/onlinehelp/AdministratorHelp/BackupAndFirmware/BackupAndRestore/index.html#backup 

Thanks and Regards