quick comment..... on the 3750 you have 'port-channel 1' interface defined - because theIOS will make a dumb config for it when you assign an interface to that channel-group if itdoesnt exist... .however, you dont have a port-channel defined on the 2...
the release note documentation suggests that SWISMK9-4-2-112-0-ER.aes is the one that contains 2 important fixes - even if your main system is 5.x or 6.x it seems 4.2.112 is as high as the bootloader code goes - I've tried installing higher numbers w...