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Garmin GNC 255A/255B Pilot’s Guide
190-01182-01 Rev. A
5. Wait until the updating process is complete and then remove
the memory device and cable. The unit will reset automatically
once the database is updated.
6. Verify the correct frequency database is loaded after power-up.
3.5.6 Software Version
The software versions of the GNC 255 unit are displayed. This information is
useful when contacting Customer Support.
1. Press FUNC to access the Functions. Turn the LARGE knob
to select the SYS Function. Turn the SMALL knob to view the
Software Version function. Then, press the ENT key.
Com Software Version
Display Software Version
Nav Software Version
Figure 3-39 Software Versions Display
2. Press the FUNC key to return to the main menu.
3.5.7 Serial Number
The serial number of the GNC 255 unit is displayed. This information is
useful when contacting Customer Support.
1. Press FUNC to access the Functions. Turn the LARGE knob
to select the SYS Function. Turn the SMALL knob to view the
Serial Number function. Then, press ENT.
ID Is Used With The
flyGarmin Services
Unit Serial Number
Figure 3-40 Serial Number Display
2. Press the FUNC key to return to the main menu.