You can use the offline update using the command line. Please see below links:
https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.esxi.upgrade.doc/GUID-22A4B153-CB21-47B4-97...
https://www.youtube.com/watch?v=0-XAO32LEPY
Also patches are cumulative.
Regards,
Sachchidanand
