Manufacturers release firmware to squash bugs and optimize internal software. For the D8 specifically, an update can provide:

: You will usually need the "Multi Media Product Tool" (often version 2.07) and a reliable USB data cable .

While holding the Power button, click "Download" in the PC tool. The process usually takes about 5 seconds. Wait another 5 seconds after it finishes before releasing the Power button. Troubleshooting & Risks Bricking Risk:

W-king D8 Firmware Update
W-king D8 Firmware Update