RMIR v2.07 build 1 is now available.  See 
this announcement for details and the download link.
As described in the previous post, the Bluetooth interface to RMIR requires the Bluegiga BLED112 Bluetooth Low Energy Dongle by Silicon Labs.  When you plug this into a USB port, it appears to the OS as a serial port.  In Windows you can use Device Manager to check this.  Under Ports (COM & LPT) you should see an entry 
Bluegiga Bluetooth Low Energy (COMx) where x is the port number.  You will need to know this number to connect to the dongle.
The Bluetooth interface is accessed through the Remote > Interface menu in RMIR.  As no physical connection is made to the remote, it is used rather differently from the wired interfaces.  It will not be found by Auto-detect, instead it has to be selected explicitly. To do so, select the JP2BT item.  This will open a dialog box that offers you a choice of available serial ports.  Click the radio button for the appropriate port and press OK.
A new button should appear on the RMIR toolbar, whose icon is the Bluetooth symbol.  This is a toggle button.  When it shows depressed, RMIR is connected to a remote.  To disconnect, press it again and it will return to normal appearance.  To make a connection, press it.  A 
Remote Chooser dialog will open, with five buttons:  Search, Register and Deregister in a box marked Actions, and Connect and Close underneath this box.
There is an panel of instructions at the top of the dialog box.  That should tell you all you need to know, but here are a few more details.  On first use the 
Select remote box will be empty.  Press Search to start RMIR searching for accessible remotes.  If you have used the phone app, you will know that when first connecting the phone to a remote, you have to press and hold the Devices and Activity buttons on the remote until an LED starts to flash.  The same is true of RMIR, so do this on the remote you want to connect.  There is no hurry, RMIR will search for 15 minutes before timing out.  Once your remote starts flashing, a radio button should appear in the 
Select remote box listing the remote by its UEI name and its individual ID.  You can repeat this for other remotes if you wish.
You can now select your remote and press Connect, but you may prefer first to register the remote with RMIR.  Registered remotes are remembered and will appear in the 
Select remote box when you next open it, without the need for searching.  So select the remote and press Register.  A dialog enables you to give it a user-friendly name that will show instead of the UEI name and ID.  Then press Connect.  The progress bar will show the progress of the connection task.  Once connected, the remote will remember RMIR so that next time, you will not have to search.  You can just select the button for the registered remote and press Connect, so simplifying the connection process considerably.  The Close button closes the dialog without connecting, terminating a search if one is in progress.
Once connected, you can use RMIR as normal but with a few differences.  If your remote is a URC-7980 then you have one new feature.  Once connected, a second new toggle button will appear next to the Bluetooth one on the toolbar.  This is the Finder button.  Press it to sound the finder buzzer, as with the phone app, and press again to stop the buzzer.  Note that the URC-7955 does not have a finder, so this button will not appear.  The other difference is that initially you can download with RMIR but cannot upload.  You will have got a message to this effect when you connected, and the Upload button will remain disabled.  You need to install an extender, a one-off process that takes up no user memory in the remote, to give upload capability to the remote.  The extender is installed with Bluetooth, no additional cable is required.  Details of the extender and its installation will be given in a later post in this thread.