# KIDZBricks Hub Firmware Update Log
| Version |  Optimization Details   |  Update Date   |  Notes   |
| :---: | --- | :---: | --- |
| [KIDZBricks_Master2.0_V3.3.6](https://altestweb.icrobot.cn/) | + Added support for the **Color Sensor**.<br/>+  Added support for the **Vision Module**. <br/>+  Added support for the **Line Tracking Sensor**. _(A new firmware version is required for the Line Tracking Sensor.)_<br/>+  Added support for the **Gamepad**. <br/>+  Added a **software audio API**. _(Future support.)_<br/>+  Optimized code execution speed in **Download Mode** by executing part of the code from **RAM**. <br/>+  Updated the version numbering format to support **test version numbers**. <br/>+ **Version Format:** The firmware version can be viewed from the default Bluetooth device name or within the software. If the version contains **"x.xxTx"**, it is a **test version**; otherwise, it is an **official release**. <br/>+  After the **Mini Gamepad** is connected via Bluetooth, press the **HOME** (house) button to start the built-in program. _(The controller must have a program already downloaded.)_<br/>+  Added support for the new **V2.0 6-Channel Line Tracking Sensor**, including **color recognition**. <br/>+  Disabled test output and version display. <br/>+  Enabled **Scratch** support. <br/>+  Added touch functionality support for the **Touch LED**. <br/>+  Removed **Lua program downloading via the serial port**. | 2026/01/28 |  |
| [KIDZBricks_Master2.0_V3.3.6](https://altestweb.icrobot.cn/) | + The data output of the new **Sound Sensor** differs from that of the previous version, making the new sensor easier to trigger.<br/>+  The new **Sound Sensor** provides a more linear output response, whereas the previous version produces more discrete output values. <br/>+  The new sensor uses **smaller output values**, while the previous version uses **larger output values** (the trigger logic is always valid). <br/>+  Fixed an issue where the **Distance Sensor** controlled the servo motor with insufficient driving force or weak movement. <br/>+ Fixed an issue in **Advanced Mode** where the LED emitted a faint red light after being set to black. <br/>+ Fixed an issue in the **Bluetooth Console** where LEDs and motors could not be turned off or behaved abnormally. <br/>**** | 2025/03/07 | **Recommended Software Version:**<br/>Android : [KIDZBricks2.0_ V2.1.4](https://icreate-help-center.yuque.com/dxifg8/eyfwhs/nv5fdisfzzhgrxc1)<br/>iOS : [KIDZBricks2.0_V2.1.2](https://icreate-help-center.yuque.com/dxifg8/eyfwhs/nv5fdisfzzhgrxc1) |
| KIDZBricks 2.0_V3.3.4 | <br/>+ Fixed the bug where the encoder button state was reversed, ensuring correct button state recognition.   ● Resolved the issue where the servo motor could not be controlled when set to 0 without using a loop.   ● Fixed the bug where, after setting the servo motor to 0, the motor would accumulate extra rotations during continuous operation. | <font style="color:rgb(0, 0, 0);">2024/11/10</font> | [KIDZBricks_Master2.0_V3.3.4T2.rar](https://www.yuque.com/attachments/yuque/0/2025/rar/48043751/1736925097830-66df8a1d-4798-497c-8ba4-7d97eaa1bfdb.rar) |