eSIM and SIM both dead

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SIM card doesn't work anymore

Hi everybody, I have a Fairphone 5 and I’m currently travelling to Australia. I took a SIM card here, from Optus, and it has veen working perfectly fine for the past two weeks. Tonight, Fairphone asked me to do a security update, which I did, and since then my SIM card doesn’t work. I get the message “SIM card 1 not autorized”. I tried to restart the phone but it’s still the same. I also tried to go on Airplane mode and then back: when I do this, the SIM card works for a few second (enough to …