First link is useful when "Enable HEN" icon is broken or missing.
OFW 4.80 to 4.82 and HFW 4.83 to 4.93 supported
Offical Flash https://ps3addict.github.io/enablehen/flash.html
Offical USB Port (Right-hand) https://ps3addict.github.io/enablehen/usb000.html
Alt. 1 USB Port (Left-hand) https://ps3addict.github.io/enablehen/usb001.html
Alt. 2 USB Port (Left-hand) https://ps3addict.github.io/enablehen/usb006.html
** Any other enablers found on this site are UNTESTED and should NOT be used!