Can i upgrade IOS version of Catalyst 9200 series switch from 16.9.3 to 17.6.3? If not, then from 16.9.3 to which version i can upgrade to? Kindly ,provide any documentation which clarifies this doubt.

I am trying to reset a 1572 EAP but reinstalls the same flash file again and again.Procedure followed by me was:1)Press the reset button of 1572 EAP.2)Power on the 1572 AP and wait for 20 seconds. But its flash file never gets' erased.Kindly let me k...