I have 2 old (5 year) RF60 flashes an 1 brand new. When I tried to update them to work with V6II and HSS I just got "No device connected". I then reinstalled the Cactus Firmware Updater and tried again but with the same problem. I also got a 404-message that the file did not exist. My V6II was easily updated though.
The real problem occurred afterwards, both my old flashes were dead! The new one seems to work but it is not updated. Has firmware 124 as default.
What should I do? Evidently I cannot update them and the 2 old ones need some service, I guess.