software upgrade problem

I'm from Sarail Net.I'm facing a technical problem like software upgrade.my device cambium Force 180 current version Beta ePMP-NonGPS_Synced-v4.4-RC30.now I've applied ePMP-NonGPS_Synced-v4.4.but surdenly connection lost & I've finally disconnected from device.now I'm triying to access to this device & trying to reset.both can not access to  this device.now what can I do??

I have forwarded this to the support and development teams.