What Happens When the Holy Stone HS720 Stops Working After an Update?
If your Holy Stone HS720 is not working after update, the problem is usually tied to firmware installation, app pairing, calibration, or a power-state mismatch.
The drone may power on but refuse to arm, drift, lose GPS lock, or fail to connect to the remote controller or Holy Stone app.
This guide explains the most common causes, the exact checks to run, and the safest recovery steps for the HS720, HS720E, and related Holy Stone GPS drone models.
Why a Firmware Update Can Disrupt the HS720
Firmware updates are designed to improve flight stability, GPS behavior, and app compatibility, but they also change how the flight controller, ESCs, camera, and remote communication modules behave.
If the update does not complete correctly, the drone can end up with mismatched firmware versions or corrupted settings.
- Interrupted update: Battery loss, app crash, or Bluetooth/Wi-Fi drop during flashing can leave the aircraft in an unstable state.
- Version mismatch: The drone, controller, and app may need compatible firmware versions after updating.
- Calibration reset: Compass, IMU, and gyro settings may need to be rechecked after the update.
- Binding issue: The remote controller may no longer be paired correctly with the aircraft.
Common Symptoms of the Holy Stone HS720 Not Working After Update
Different symptoms point to different failure points.
Identifying the exact behavior can save time and prevent unnecessary resets.
Drone powers on but will not take off
This often indicates a safety lock, failed calibration, or an arm/disarm issue.
The motors may beep, flash, or remain idle even though the battery is charged.
No connection to the remote or app
If the HS720 no longer connects to the Holy Stone app or controller, the update may have changed the communication state.
This can happen after app permission changes, Wi-Fi reconnection issues, or a failed firmware flash.
GPS or compass errors
After an update, the drone may show poor satellite acquisition, compass interference warnings, or “ready to fly” messages that never appear.
These problems are especially common outdoors near metal objects, vehicles, reinforced concrete, and power lines.
Unstable hovering or abnormal drifting
If the drone flies but behaves erratically, the IMU or compass may need recalibration.
Firmware updates can expose preexisting sensor drift that was previously masked by the old firmware.
First Checks to Run Before Changing Anything
Before reinstalling firmware or resetting the drone, verify the basics.
Many post-update issues are caused by a simple pairing, battery, or setup problem rather than hardware failure.
- Charge the drone battery, controller batteries, and phone battery fully.
- Confirm the propellers are installed on the correct arms and are not cracked or bent.
- Power on the remote controller before the drone, then follow the binding sequence in the manual.
- Test the drone in an open outdoor area away from interference.
- Close background apps on your phone and grant location, Bluetooth, and network permissions to the Holy Stone app.
How to Fix the Holy Stone HS720 Not Working After Update
1. Power cycle the drone and controller
Turn everything off, remove the drone battery, wait 30 to 60 seconds, and restart in the correct sequence.
A clean reboot clears temporary pairing faults and unstable states left behind by the update.
2. Rebind the controller to the aircraft
On many Holy Stone drones, pairing can be lost after firmware changes.
Re-enter the binding mode described in the HS720 manual, usually by holding the controller stick/button combination until the drone and controller LEDs indicate a successful link.
3. Recalibrate the IMU and compass
Place the drone on a flat surface and run an IMU calibration first, then perform a compass calibration outdoors away from magnetic interference.
Calibration is critical if the drone drifts, tilts, or refuses GPS-assisted flight.
4. Reinstall or update the Holy Stone app
If the app no longer recognizes the drone, uninstall it, restart the phone, and install the latest version from the official app store.
Old app builds can conflict with newer firmware and prevent proper connection.
5. Check for firmware consistency
Verify that the aircraft firmware, controller firmware, and app version are intended to work together.
If Holy Stone provides a reflash method, repeat the update using a stable phone, full battery, and a strong data connection.
Never interrupt the process once it begins.
6. Reset flight settings if available
Some Holy Stone models store configuration data that may need to be reset after an update.
If the manual or app provides a factory reset option, use it only after saving any needed settings and confirming the drone is otherwise functional.
When the Problem Is Not the Update
Sometimes the update is blamed for a problem that actually comes from hardware wear or environmental conditions.
If the HS720 still fails after calibration and rebinding, check these items.
- Damaged propellers: Even minor bends can prevent takeoff or cause severe vibration.
- Weak battery: An aging lithium-polymer battery may sag under load and trigger protection behavior.
- Motor obstruction: Dust, sand, hair, or impact damage can stop a motor from spinning correctly.
- Remote controller issue: Faulty sticks, low controller voltage, or failed antennas can break the link.
- Phone compatibility: Some Android or iOS updates change permission behavior and break app-to-drone communication.
Best Practices to Avoid Update Failures on the HS720
Preventing the issue is easier than recovering from it.
A few habits can reduce the risk of firmware-related failures on Holy Stone GPS drones.
- Update only when the drone, controller, and phone are fully charged.
- Use the official Holy Stone app and download firmware only from trusted sources.
- Do not update outdoors in high interference or low-signal areas.
- Avoid switching apps, receiving calls, or locking the phone during the update.
- Record your pre-update app version and firmware details so you can compare results if something breaks.
Signs You Should Contact Holy Stone Support
If the drone will not power on, the motors do not respond after repeated recalibration, or the update repeatedly fails at the same percentage, the issue may be firmware corruption or a hardware fault.
At that point, contact Holy Stone customer support with the model number, app version, firmware details, and a clear description of the symptoms.
Include whether the problem started immediately after the update, whether the controller still binds, and whether the aircraft shows LED error patterns.
Those details help support teams determine whether you need a replacement part, a reflashing procedure, or warranty service.
What to Test After the HS720 Starts Working Again
Once the drone is responsive again, verify flight behavior before attempting a full mission.
- Hover for 20 to 30 seconds at low altitude.
- Check that GPS lock appears stable outdoors.
- Test yaw, forward, backward, and lateral movement slowly.
- Confirm Return-to-Home behavior at a safe distance and altitude.
- Inspect video feed, gimbal response, and app telemetry if your HS720 variant supports them.
If the drone passes these checks, it is likely back in a safe operating state.
If not, repeat calibration and binding steps before flying farther from the takeoff point.