If you could kindly provide a photo of the machine, we will be able to accurately verify its version.
For slicing, Wiibuilder is typically the recommended software. You may download it here:
Wiibuilder for Windows Wiibuilder for macOSTo assist with setup and operation, please refer to the Wiibuilder User Guide:
Learn how to use WiibuilderIf you're using a mobile device or Chromebook, an alternative option is the Kiri slicing tool:
Kiri Slicing Tool