1. If ukey wants to upgrade the version, you need to open the computer to connect with tax ukey, and then log in to the VAT invoice invoicing software.

2. Enter the software, then click the Settings button in the upper right corner and select Check for Update. The software will automatically detect whether it needs to be upgraded. If an upgrade is required, the upgrade mode will be automatically started.

3. The software will automatically pop up the software upgrade and installation program. Click Install Now to upgrade to the latest version.