# Troubleshooting Betaflight 4.5 GPS Rescue: Complete Guide
GPS Rescue is a lifesaver for FPV pilots, but misconfigurations in Betaflight 4.5 can lead to flyaways or failsafe crashes. This guide covers common GPS Rescue errors, hardware checks, and parameter tuning to ensure your quad returns home safely.
## Common GPS Rescue Issues
| Symptom | Potential Cause | Recommended Fix |
|———|—————–|—————–|
| 0 Satellites Found | TX/RX wired backwards | Swap TX/RX pads on the Flight Controller |
| Rescue mode disabled in OSD | Sanity check failed | Ensure min_sats is met (default 8) |
| Drone flies away upon failsafe | Magnetometer interference | Mount GPS higher, calibrate compass |
| Erratic altitude changes | Barometer not covered | Place open-cell foam over barometer |
## Top Troubleshooting Steps
* **Check UART Configuration**: Ensure the GPS is connected to a hardware UART and “Sensor Input” is set to GPS in the Ports tab.
* **Baud Rate**: Modern M10 GPS modules use 115200 or 230400. Try auto-baud first.
* **Sanity Checks**: Betaflight requires the quad to be at least 30 meters away and above 15 meters altitude for rescue to engage by default.
## Hardware Upgrade: The M10 Solution
If your older M8N GPS is taking 5+ minutes to get a lock, it’s time for an upgrade. The newer M10 architecture locks onto 15+ satellites indoors within seconds. We highly recommend upgrading to a high-quality M10 module from [uavmodel.com](https://www.uavmodel.com) to guarantee reliable GPS Rescue performance on Betaflight 4.5.
## Video Guide
Check out this excellent visual breakdown of GPS Rescue setup: