1. Download RaspbianOS (official version) or Lychee version which has wifi hotspot set up.
2. Format the micro SD card (16GB) by using SD Formatter.
3. Install Win32DiscImager
4. Inser SD card to PC and open Win32DiscImager
5. Once finished writing, remove the SD card, and insert inside the Lychee and power the Lychee.