Hmm good to know I just got it last week and even at the store every time we tried firing it with a 1.0 Ohm coil we kept getting an E1 message. Ill have to check that out thanks for the heads up
It's easy to see what version of the Provari you have, check how low the voltage will go. If it bottoms at 2.9 then you have the latest version. I also will get an E1 error, but it needs to fire at a lower voltage is all, just keep lowering it until it fires. mine fires a 1.0 coil at 3.8-3.9v, any higher and I get the message.