Temporarily disabling fw for flashing router

What’s the correct procedure to temporarily disable Comodo firewall (and not inadvertently enable Windows firewall in the process), and then enable it back for normal functionality again?
I only need this occasionally – right now it’s for flashing a router via tftp (my attempts with leaving Comodo as is, or just closing it via right-click menu from system tray failed).
(The computer in question is running Windows 7 and Comodo 5.10.)

Just disable the firewall then set it back to whatever mode you had. General Settings | Comodo Firewall, Computer Security|Comodo Internet Security v5.9 /5.10

Does it only disable/enable firewall and does absolutely nothing else?

Yes only the network firewall of comodo is affected when you change its mode.