Service Bulletin 2048
Page 8-10
April 24, 2020
Revision B
Part Three: GPS 175/GNX 375/GNC 355 Software Verification
1. Power up the unit into Normal Mode.
2. Touch
System
.
3. Touch
System Status
.
4. Verify the following applicable software version:
• GPS 175
◦
Main Software Version 3.10
◦
GPS/WAAS Software Version 8.0
•
GNX 375
◦ Main Software Version 3.10
◦ GPS/WAAS Software Version 8.0
◦ Transponder Software Version 2.54
•
GNC 355
◦ Main Software Version 3.03
◦ GPS/WAAS Software Version 8.0
◦ Com Software Version 2.30
5. Power off the unit.
6. Push and hold the inner knob, and push the power key to enter Configuration Mode.
7. Inspect configuration settings to make sure configuration settings are retained though the software
update. Correct as necessary.
For the GNX 375 Only:
8. Inspect Diagnostics -> XPDR - > Faults page. If CFG Module fault is red X as shown below, then
proceed to step 9 to clear the fault.
Figure 9. XPDR Faults
9. Touch
SD Save
.
Figure 10. SD Save
