SN3500 Service Bulletins and Service Information Letters

To download the latest software for the SN3500 please use the following form:
Software Update Download

SIL 3500-22: Software version A4.08 for MOD A – 10/5/2018

SIL 3500-21: Software version A4.07 for MOD A – 10/8/2014

SIL 3500-20: MOD A and software version A4.06 – 1/24/2014

SIL 3500-19: Flux gate failure annunciation – 8/14/2012

SIL 3500-18: Software version 4.05 – 3/2/2012

SIL 3500-17: Software version 4.04 – 12/5/2011

SIL 3500-16: Software version 4.03 – 11/30/2010

SB 3500-15: Software version 4.02 – 6/4/2010

SIL 3500-14: Software version 4.01 – 8/26/2009

SB 3500-13: Display discoloration – 8/20/2009

SIL 3500-12: Software version 4.00 – 5/27/2009

SB 3500-11: Software version 3.06 – 12/8/2008

SIL 3500-10: Software version 3.05 – 9/16/2008

SB 3500-09: End of life – SN3500 replacement backlight – 8/19/2008

SIL 3500-08: Typographical error on TSO nameplate – 8/20/2008

SB 3500-07: SN3500 interfaced with WSI datalink weather receiver – 4/22/2008

SIL 3500-06: Software version 3.02 – 11/19/2007

SIL 3500-05: Interfacing with Garmin GNS 400W/500W series receivers – 3/7/2007

Note: Software version 3.02 and higher allows display of GPS approach vertical deviation without the addition of the analog lateral and vertical deviation wiring described in this SIL.

SIL 3500-04: Software version 3.01 – 11/29/2006

SB 3500-03: Software version 3.00 – 12/5/2005

SIL 3500-02: Software version 2.01 – 9/20/2005

SIL 3500-01: Display color quality – 8/12/2005