This version 7G firmware is for the MD-XII or Ranger with firmwarwe 
        6F or above with Co-Processor.  CO-Processor can be confirmed by 
        checking options on screen 8.  Go to screen 8, press e, enter 888 
        and press e again.
        Receivers with a co-processor are identified with MCF on the lower
        right hand portion of the screen.  If a co-processor is not present, 
        contact Ashtech Customer support for assistance at  800-229-2400 
        (US only) or 408-615-3980 (worldwide).
        
        The Ashtech upload programs are DOS based programs which should 
only be run within a pure DOS environment and using the standard VGA/EGA 
display mode.  Shelling to DOS from Windows or similar package and then 
running these programs may cause communication interruptions and could 
cause the receiver to be incorrectly programmed requiring return to Ashtech 
for correction.  The computer should be freshly re-booted to make sure 
that no other program is being executed before starting the upload programs.
***WARNING***: Any interruption in communications during the 
firmware upload sequence will require further corrective actions, 
which if not performed properly, may render the unit unusable (the 
unit may have to be returned to the factory to have the unit reset).  
        Ashtech programs are designed to operate with industry standard 
personal computers.  Use of computers which are not 100% compatible 
with these standards may cause abnormal program operation and require 
returning the unit for factory reprogramming.

To load firmware: 
1.  Turn off any messages being output on GPS receiver RS232 port.
2.  Set GPS receiver BAUD rate to 115200 BAUD.
3.  Type <uh>  if using computer COM1 or Type <uh -2>
if using computer COM2.
4.  Follow instructions on computer screen.