If an update of the UI is interrupted (for example a power interruption) there is the possibility for the multimeter to display an error and not reach the main screen.

To enter recovery mode, extract the attached .zip to a USB drive (formatted as the instructions here -

8100 : Formatting a Memory Stick to FAT32 Format.

Make sure that the .exe files are directly on the drive and not inside a sub folder.

> Insert the USB stick into the multimeter while the multimeter is OFF and then turn the power on.

> The multimeter will start up using the USB drive image.

> After successful start up, run the USB update and then remove the USB stick.

The multimeter will now boot correctly, if it does not, please contact us for further assistance.