Cold/Hard reboot/reset = turning the power off and back on again.
Warm/Soft reboot/reset = using the Amiga Keys to restart the Amiga.
As was earlier posted, you can tell if you have the hardware fix already done if:
1) you leave the PCMICA card in the slot
2) do a cold start on the Amiga
3) The card works!
If it doesn't work, you don't have the fix.