Please disregard the second paragraph of this file if you are fixing problems listed on UNAVCO’s Trimble 4000 Firmware page.

--------------------------------------------------------------- 
4000SE/SSE/Si/SSi/RS/DS Firmware Update README19.TXT file     
--------------------------------------------------------------- 

COMPATIBILITY:

Version 7.19 is compatible across both the Gauss and Maxwell 
Technology based 4000SE/SSE/Si/SSi/RS/DS receiver product lines.  


Version 7.19 does not implement Everest Multipath Reduction and 
should not be loaded onto receivers which have a current firmware
version of 7.20 or later.  If your receiver currently uses 
firmware version 7.20 or later, and you have a current
Support Agreement, please download the file 4000V729.EXE.


The firmware update loader program checks to verify that a  
receiver has serial number authorization before proceeding 
with the upload.  


The file FEATURES.TXT details changes implemented with firmware 
Version 7.19.  We recommend that you read FEATURES.TXT to determine 
the need to perform this upgrade.




UPDATE PROCEDURE:     

This disk contains an encrypted serial number security file 
LOADER.BIN, containing serial numbers entitled to use this 
update. If you receive an error message indicating your serial 
number is not in LOADER.BIN, please try the procedures outlined
in the section titled TROUBLESHOOTING.     


INSTALLING FIRMWARE VERSION 7.19:

1) Connect a serial port of your PC to POWER-I/O 1 on the 4000. 

2) If the connection from step one above does not provide power 
   to the 4000, connect a battery or OSM to port PWR 2&3 on the 
   4000.     

3) Power on the 4000.     

4) The Firmware is updated into the receiver using a program that   
   runs from the DOS prompt, from an MS-DOS Window in Windows 3.1
   or from the MS-DOS Prompt in Windows 95/98.


   To access the MS-DOS Window in Windows 3.1, double-click the 
   MS-DOS icon.


   To access the MS_DOS Prompt in Windows 95/98, press "Start", 
   choose "Programs" and select "MS-DOS Prompt."


   Once you are at the DOS prompt, find the directory where the 
   4000 Series Firmware Version 7.19 files are located and run
   one of the following commands:


   - To update at 38400 baud using serial port 1, type:  UPDATE 1 
   and press return on your PC.     

   - To update at 9600 baud using serial port 1, type: UPDATE_S 1 
   and press return on your PC.     

   - To update at 38400 baud using serial port 2, type:  UPDATE 2 
   and press return on your PC.     

   - To update at 9600 baud using serial port 2, type: UPDATE_S 2 
   and press return on your PC.     

   If the update program is unable to connect to the 4000,     
   check the cable is connected between the desired PC serial  
   port and POWER-I/O 1 on the 4000. Then repeat the command   
   given above. See also the section titled TROUBLESHOOTING.  

   At 38400 baud, the update takes about 3 minutes. This is the 
   recommended speed. If for some reason your PC can not run  
   reliably at 38400 baud, try the option at 9600 baud. This   
   takes about 12 minutes.     

5) The program will find the baud rate of the instrument, set   
   the baud rate to either 38400 or 9600 depending on whether   
   the user typed UPDATE or UPDATE_S.  Extract the serial number   
   of the 4000, check to see if that serial number has a   
   current firmware support registration.  Then proceed to   
   perform the update.  During the update, the 4000 front panel   
   will indicate REMOTE MONITOR ACTIVE.     

6) When complete, the program will cause the 4000 to reboot.   
   You can verify the firmware version number that was up   
   loaded by pressing STATUS, OPTIONS, MORE, MORE and noting   
   the version number listed under NAV VERSION on the second   
   line of the display.


7) If you are in Windows 3.1 or Windows 95/98, type EXIT at the
   prompt to return to Windows 3.1 or Windows 95/98.



TROUBLESHOOTING:

If the firmware update is unsuccessful, repeat the instructions
detailed in the section titled INSTALLING FIRMWARE VERSION 7.19.  
If still unsuccessful try one of the following:  

- From the 4000 display, using the CONTROL key and REMOTE   
  PROTOCOL softkey, check that protocol is set to DATA COLLECTOR   
  COMPATIBLE. Repeat the INSTALLING FIRMWARE VERSION 7.19 procedure.     

- From the 4000 display, using the CONTROL key and DEFAULT   
  CONTROLS softkey, initialize the receiver controls (to   
  disable all outputs). Repeat the INSTALLING FIRMWARE VERSION 7.19 
  procedure.


If none of these suggestion work, please contact Trimble 
Technical Support at one of the numbers listed in the 
TRIMBLE TECHNICAL SUPPORT CENTERS section.


TRIMBLE TECHNICAL SUPPORT CENTERS:


For  Technical Questions Or Instructions Please Contact Your 
Nearest Trimble Technical Assistance Support Center: 

       Within the USA and Canada         (+) 1-800-767-4822 
 (+)   408-481-7330
       Europe, Middle East, & Africa     (+)44-1256-760-150 
       Asia Pacific         (+)  64-3-339-1400 
       Japan                             (+) 81-35-476-0880 

Internet Email Address          trimble_supporttrimble.com 
Trimble Web/FTP Site            www.trimble.com 

Please have serial number information available when calling   
for support.