xpr4580

Hello, Any one out there able to explain to me how to put a XPR4580 into bootstrap mode manually? Thanks in advance

I am wondering if anyone out there has been successful in crossbanding a couple of talk groups from Smartnet to Mototrbo Connectplus or visa versa? Your info/any information would be very very helpful!! I am currently using 2 XPR4580 radios one in Smartnet mode and one in Connectplus mode...