I Even have Solos. If I loosen the tank, press the fire button to find the no atomizer concept, change the mod off, tighten the tank, and switch the mod again on, I get that concept. I just did that and it said Outdated Coil 0. If you are searching https://geekvape-h45-classic89999.ktwiki.com/1124918/indicators_on_geekvape_h45_classic_you_should_know