The first estimates from Ioannidis from the flawed (in every possible way) California paper were less than 0.1% IFR. He later revised them to 0.16% IFR, not sure if subsequent "revision" (=admission of being wrong) was done afterwards. Bear in mind, that was his IFR estimate for March-April 2020, when a lot of treatment was being done wrong (=intubate early) and even steroids were not supposed to be used for treatment outside RCTs.

Meanwhile, the CFR at Diamond Princess was at 2.6%, so refrain from the idiocy "1 in 8 IFR estimates" as only completely uninformed people will fall for them.