At long last: EL-5, EL-1 and ST-E10 unstable connection fixed!

It looks like Canon - after years of blatantly ignoring the problem - has fixed the constant link drop of the RT Speedlite protocol.

The firmware update is available for:

• Speedlites EL-1 and EL-5
• Transmitter ST-E10

I already tested it on a EL-5 + ST-E10 and the connection doesn’t drop where it previously would (WiFi interference was the cause).

It’s not clear if older equipment without the digital shoe can or will be updated (ST-E3-RT, 600EX-RT etc…)