I'm trying to update my late 2013 iMac to Sonoma, and I keep getting Corrupted Installer error at the verification stage of creating USB installer. I'm pretty sure the USB stick is ok, I formatted it multiple times in Disk Utility including safe erase. Also tried other versions of MacOC.
As I don't have another USB drive to check, it it possible to create the installer on an external SSD which is the same drive I will be installing the OS to?
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