A Simrad GPS not working after an update can be frustrating, especially when your navigation system stops showing your location, loses satellite connection, or displays incorrect GPS information after installing new software or charts. Although updates are designed to improve performance, issues can sometimes occur due to incorrect installation, incompatible files, changed settings, or software conflicts.

Simrad GPS systems depend on updated software, GPS antennas, satellite signals, and configuration settings to work correctly. This guide explains the common causes of Simrad GPS problems after an update and provides step-by-step solutions to restore normal navigation performance.

Why Is Simrad GPS Not Working After Update?

Several issues can cause GPS problems after updating.

1. Update Installation Error

An incomplete or interrupted update may cause:

• GPS failure
• System freezing
• Missing features
• Navigation errors

2. Incorrect Software Version

Installing software that does not match your Simrad model can create compatibility problems.

3. Changed GPS Settings

Updates may reset or modify:

• GPS source settings
• Network configurations
• Navigation preferences

4. GPS Antenna Communication Issues

After an update, the device may fail to communicate properly with:

• Internal GPS receiver
• External GPS antenna
• Network GPS devices

5. Chart or Memory Card Problems

A damaged or incompatible microSD card can affect GPS operation after updates.

Common Symptoms After Simrad GPS Update

You may notice:

• GPS location not showing
• "No GPS signal" message
• Unable to find satellites
• Position accuracy problems
• GPS keeps searching
• Navigation routes not working
• Device restarting
• Maps missing after update

How to Fix Simrad GPS Not Working After Update

Follow these troubleshooting steps to restore GPS functionality.

1. Restart Your Simrad GPS System

A simple restart can fix temporary update-related issues.

Steps:

1. Turn off your Simrad GPS unit.
2. Disconnect the power supply if needed.
3. Wait for a few minutes.
4. Turn the device back on.
5. Check GPS status.

Restarting allows the system to reload updated software correctly.

2. Check GPS Satellite Connection

After an update, your device may need time to reconnect with satellites.

Steps:

1. Open the GPS or satellite information menu.
2. Check satellite visibility.
3. Move the device to an open area.
4. Wait several minutes for satellite acquisition.

Avoid testing under roofs or near large obstacles.

3. Verify GPS Source Settings

Software updates may change GPS source configurations.

Check:

• Internal GPS receiver
• External GPS antenna
• Network GPS source

Steps:

1. Open system settings.
2. Select GPS settings.
3. Choose the correct GPS source.
4. Restart your Simrad device.

4. Check GPS Antenna Connection

A loose antenna connection can prevent GPS operation.

Inspect:

• Antenna cable
• Connectors
• Cable condition
• Mounting position

Solution:

1. Turn off the device.
2. Disconnect the antenna.
3. Reconnect it securely.
4. Restart the GPS.

5. Check the microSD Card

If the update was installed through a memory card, the card may cause problems.

Try:

1. Turn off the Simrad unit.
2. Remove the microSD card.
3. Restart the device.
4. Check GPS performance.

If the GPS works without the card, the update file or card may be causing the issue.

6. Confirm Update Compatibility

Make sure the installed update matches your Simrad model.

Check:

• Device model number
• Software version
• Update file compatibility

If the wrong update was installed, reinstall the correct software version.

7. Reinstall Simrad Software Update

A failed update installation can cause GPS problems.

Steps:

1. Download the correct software update again.
2. Prepare a compatible microSD card.
3. Copy the update files.
4. Insert the card into the Simrad device.
5. Complete the installation process.

Keep the device powered during installation.

8. Reset Simrad GPS Settings

If settings changed after the update, restoring defaults may help.

Before resetting:

• Backup waypoints.
• Save routes.
• Export tracks.

Then:

1. Open system settings.
2. Select reset options.
3. Restore default settings.
4. Restart the device.

9. Update Charts and Maps

Sometimes GPS problems are related to outdated or incompatible charts.

Check:

• Chart version
• Map compatibility
• Chart card condition

Install the latest compatible charts if required.

10. Check Power Supply

An unstable power source can affect GPS performance after updates.

Inspect:

• Battery condition
• Power cables
• Fuse connections
• Wiring

Make sure the Simrad unit receives stable power.

Fix Simrad GPS Not Finding Satellites After Update

If satellites cannot be detected:

Try:

• Moving to an open location.
• Checking antenna connections.
• Restarting the GPS.
• Verifying GPS source settings.
• Waiting for satellite lock.

Fix Simrad GPS Showing Wrong Location After Update

Incorrect location may occur because of:

• GPS settings changes
• Poor satellite reception
• Antenna problems

Solutions:

• Check GPS source.
• Restart the device.
• Allow time for satellite connection.
• Update software again if necessary.

Fix Simrad GPS Keeps Losing Signal After Update

If the signal drops repeatedly:

Check:

• Antenna placement
• Cable connections
• Power stability
• Software installation

Updating the system again or resetting settings may resolve the problem.

Prevent Simrad GPS Update Problems

Follow these tips:

• Backup data before updating.
• Confirm your device model before downloading updates.
• Use a reliable microSD card.
• Maintain stable power during installation.
• Update charts regularly.
• Check GPS operation after every update.

Frequently Asked Questions

Why did my Simrad GPS stop working after an update?

The issue may be caused by incorrect settings, incomplete installation, incompatible software, antenna problems, or GPS source changes.

How do I restore Simrad GPS after a failed update?

Restart the device, reinstall the correct software update, check connections, and restore settings if necessary.

Can a software update damage Simrad GPS?

A proper update normally improves performance, but interruptions or incorrect files can cause temporary system problems.

Why is my Simrad GPS not finding satellites after updating?

Possible causes include changed settings, antenna communication problems, poor signal conditions, or incomplete updates.

Should I reset Simrad GPS after an update?

A reset may help if settings were changed, but backup your navigation data before restoring defaults.

Conclusion

If your Simrad GPS is not working after an update, begin by restarting the device, checking satellite reception, verifying GPS settings, and inspecting antenna connections. If the problem continues, reinstall the correct software update, remove problematic memory cards, or reset the system configuration.

Keeping your Simrad software, charts, and hardware connections properly maintained will help ensure reliable GPS performance and accurate marine navigation.