CONNECTED CHARGING • SOFTWARE CHANGE CONTROL
EV CHARGER FIRMWARE UPDATES:
PLAN, UPDATE, VERIFY
Treat a charger software update like a controlled equipment change: record the setup, follow the maker’s instructions, and confirm normal charging afterward.
A connected EV charger can receive firmware that changes features, communications, or fault handling. That does not make every update risky, but it does make a little preparation worthwhile. The goal is to preserve a clear record of the working setup and avoid changing several variables at once.
Know what is actually being updated
The charger, the vehicle, and a home energy system may each have separate software. An app notification for one device does not confirm that the others changed. Record the charger model, serial number, app version, and current firmware version if the manufacturer exposes them.
Check the manufacturer’s support page for the exact product. Some equipment updates automatically when connected; other products require an app action or a specific network state. Follow the published sequence for that model instead of using instructions written for a different charger.
Make a simple before record.
Note the configured current limit, access-control setting, schedule, network name, and any energy-management integration. Take screenshots that do not expose passwords, account recovery codes, or other secrets.
Prepare without opening electrical equipment
Confirm the vehicle does not urgently need a charge during the expected update window. Keep the charger powered and connected only as the manufacturer directs. Do not remove covers, probe terminals, or bypass a fault to force an update.
If an update depends on Wi-Fi, first confirm the app can see the charger. A weak connection is a communications issue, not a reason to alter electrical wiring. For a hardwired unit or a circuit with recurring trips, arrange qualified electrical diagnosis.
Recheck the settings that affect daily charging
After the update completes, compare the displayed current setting, schedule, access rules, and load-management status with the before record. A vehicle may also impose its own charge limit or schedule, so check both sides before concluding that the charger changed.
Use one ordinary session to confirm that charging starts, remains stable, and stops normally. Look only at normal user-facing indicators and the app. If the equipment displays a persistent fault, record the exact code and timestamp and consult the manufacturer or installer.
When an installer belongs in the conversation
An installer can help separate network or account symptoms from circuit or equipment symptoms. Share the model, firmware version, fault code, and what changed immediately before the problem. Avoid repeated resets when the manufacturer’s instructions say service is required.
See EV Garage Install’s charger installation services and assessment process when a software change reveals a need to confirm the electrical installation.
EV charger firmware update questions
Should I install every update immediately?
Follow the equipment maker’s published guidance. If the charger is working and the notice is unclear, read the release information or contact product support before acting.
Can an update increase charging power?
Software cannot make the installed circuit, conductors, protective device, or vehicle accept more than their designed limits. Do not raise a current setting without confirming the complete installation.
What if the charger goes offline afterward?
Record the indicator state and app message, then follow the model-specific support steps. Do not open the unit or improvise a bypass.
What records should I keep?
Keep the model and serial number, installation documents, firmware version, configuration screenshots, and support case numbers together.
PRIMARY SOURCES CHECKED OCTOBER 6, 2026
ENERGY STAR electric vehicle chargers · Tesla Wall Connector support · U.S. DOE home charging guidance
PLAN THE COMPLETE INSTALLATION
Match the vehicle, equipment and electrical system.
Send your address, vehicle details, charger model, and safely taken photos of the proposed location and accessible equipment labels. EV Garage Install will discuss the scope and next assessment step.