Upgrading Catalyst C9600R Stackwise Virtual Quad-SUP without downtime

[HoangTranDang00544]

Hi all, I am currently running Catalyst 9600R - IOS-XE 17.3.1 with Quad-SUP. This OS is currently not support ISSU feature, so is there anyway that I can upgrade software OS without downtime? 

Thanks in advanced.

[Mark Elsen]

 - Check if you find this info useful :

          https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9600/software/release/17-2/configuration_guide/ha/b_172_ha_9600_cg/quad_supervisor_with_route_processor_redundancy.html#id_127173

 M.