I just bought one of these from Amazon. I thought I ordered what I would call the version 1 778UV but they sent me a 778UV-II instead (Ok they saved me $5). When I tried to access the test mode by "pwr down, hold func+F4 and power up/Enables CH39 to 43 to be selected" trick all I got was a blank white screen. The weird thing is it seems to already be unlocked. It can transmit the full 136-174mhz, 400-490mhz. I'm not complaining since I have both a HAM and GMRS licenses and enough sense not to stray out of those bands (I also have a AR-5RM). I just thought it was strange that it was sent to me already unlocked with no mention in the description.