GRE AMERICA, INC.

Product:                PSR-500 / PSR-600

Classification:         Production DSP Firmware Release NOTE

Firmware  Date:		Feb/19/2008

Release Date:           Feb/19/2008

Last Firmware Version: DSP "U1.1"

Supported OS.

  Windows 98SE
  Windows ME
  Windows 2000 (standard or Professional)
  Windows XP (Home or Professional)
  Windows 2003 Server ("standard" or x64)
  Windows Vista ("standard" or x64)


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DSP Production Firmware Version 1.2 release notes:

- This is the user loadable version of the Factory 1.2 DSP firmware.  
  Will display as "DSP App Ver:U1.2" after loading and is identical to the
  factory "F1.2" load.

- Please use with CPU version 1.2 or higher, otherwise some features
  may not operate properly

- Improves P25 control channel message processing, particularly on 
  non-800 MHz systems

- Fixed control channel message processing issue that, on certain systems,
  resulted in missed talkgroup calls 

- Fixed  control channel message processing issue that, on certain systems,
  resulted in an abnormally low control channel quality % display, even in
  areas with strong signals.  ** Please note that if you use the TSYS
  Multi-Site "Roam" mode, on a system where the CC displayed low quality
  values, you may need to modify the "Threshold Hi" and "Threshold Lo"
  settings to higher values for the Roam feature to properly work