Is it one of the ones on ebay?
If so, do not be surprised if the radio is unusable. So far the few that have been evaluated and discussed here have all had either just the test app in them or are flashed only for OpenSky, and thus are useless unless you run an OpenSky system.
If this is the case, there will be no way to change it to ECP code in the field. (Edacs, Conventional, P25) It'd have to go back to Harris in Lynchburg and they'll charge you 450 dollars just to look at it,
plus charge you for any features you purchase.
And they won't deal with an individual. They don't do business with anyone who doesn't have a customer agreement with Harris. You'd have to get an authorized Harris dealership to handle the deal for you.
But the accessories are good, and can be used as a remote mount kit for an M5300 or M7300.
At 400 dollars for the whole radio system, it's a good price for the accessories even if the radio turns out to be useless.
I have two of those useless radios sitting in my junk pile. Anybody who wants them can have them, just pay shipping. But I kept the accessories and remote mounted my M5300 with them.