Firmware lock out and not original receipt
I am locked out of iMac due to firmware lock out. I no longer have the original receipt for this iMac. Is there another way to show I am the original owner
Earlier Mac models
Question marked as
How did you pay for the iMac? If it was by credit card you can try to contact the provider and see if they still have a record of the transaction. That might suffice.
When did you add the firmware lock and why?