What should be checked after an inverter firmware update?

What you will see

• A new firmware version after a service visit.
• Changed behaviour in battery charging or monitoring.
• A feature added for a particular equipment combination.
• Uncertainty about whether earlier settings were retained.

Why it happens

Solis documents firmware procedures that depend on inverter details and the battery protocol being supported. This illustrates why firmware selection and verification must match the actual equipment arrangement.

Ask for the previous and new versions, the reason for the change and the relevant post-update checks. The team should review warnings, communication, agreed operating schedules and any functions affected by the work.

If an issue appears afterward, preserve the timeline rather than assuming the update is automatically responsible. The diagnosis should compare the new behaviour with the documented configuration and service findings.

Diagram

After the update

Record:

Old versionNew versionReasonSettings retainedChecks performed

Keep the timeline. A later issue is not automatically caused by the update.

What you can check yourself

• Save the version information visible in the normal user interface.
• Keep the service case number and update date.
• Note which expected behaviour has changed.
• Capture warnings without entering installer settings.
• For backup testing, ask the installer to arrange the appropriate controlled check. Do not create an outage yourself merely to verify an update.

What not to do

• Do not install firmware from an unofficial source, interrupt an update or attempt a rollback without manufacturer-supported advice. Do not copy settings from a different inverter to restore a familiar screen.

When to call us

• Report new warnings, lost communication or unexpected operation following an update. Provide the service reference so the change can be traced.

Firmware updates in Faisalabad and Lahore

After an update at a Faisalabad or Lahore site, send our team the version records and anything that changed.

Send us

Equipment models, available version records, update date, symptoms, screenshots, and your city and area.