Update README.md

Author: zhonghong322

README.md

@@ -6,7 +6,7 @@ This repository is used to store download links for firmware.
 | **Products list** | **Download link** | Latest version     |
 | --- | --- | --- |
 | Femto Bolt       | [Femto Bolt Firmware](https://github.com/orbbec/OrbbecFirmware/releases/tag/Femto-Bolt-Firmware) |     v1.1.2       |
-| Femto Mega       | [Femto Mega Firmware](https://github.com/orbbec/OrbbecFirmware/releases/tag/Femto-Mega-Firmware) |     v1.2.8       |
+| Femto Mega       | [Femto Mega Firmware](https://github.com/orbbec/OrbbecFirmware/releases/tag/Femto-Mega-Firmware) |     v1.2.9       |
 | Gemini 2       |  [Gemini 2 Firmware ](https://github.com/orbbec/OrbbecFirmware/releases/tag/Gemini2-Firmware)|     v1.4.92      |
 | Gemini 2 L       | [Gemini 2L Firmware ](https://github.com/orbbec/OrbbecFirmware/releases/tag/Gemini2L-Firmware)|     v1.4.42       |
 | Femto Mega I       | [Femto Mega I Firmware](https://github.com/orbbec/OrbbecFirmware/releases/tag/Femto-Mega-I-Firmware) |     v2.0.2       |