Updated at 2026-9-1

Air Link V2.2.0 Firmware Download Link (Including Upgrade Tutorial): Click here

Air Link V2.2.0 firmware changes are as follows:

1. Added Low Latency mode.

2. Added Broadcast mode.

3. Added calling functionality.

4. Added PEQ functionality.

5. Removed multipoint connection functionality.

6. Optimized iOS app connectivity.

7. Other performance optimizations.

Note 1:

Low Latency mode defaults to Classic Bluetooth mode. Double press the multifunction button to switch between Classic Bluetooth and Low Latency.

Low Latency mode automatically selects the supported codec based on the following rules:

If the device supports Unicast, LC3 is used by default.

If Unicast is not supported, aptX Adaptive-Low Latency is selected.

If neither Unicast nor aptX Adaptive is supported, aptX LL is used.

If none of the above is supported, Low Latency is unavailable and functionality remains the same as Classic Bluetooth.

Note 2:

Broadcast mode defaults to Classic Bluetooth mode. Triple press the multifunction button to switch between Classic Bluetooth and Broadcast.

LC3 is used by default. The broadcast name and password can be set in the app.

Broadcasts can be searched for and received using Auracast-compatible devices.

Note 3:

When LC3 is in use, the indicator light breathes blue.

When LDAC or aptX Adaptive is in use, switching modes with the button adds a voice prompt.

Note 4:

PEQ: supports 7 EQ presets and 3 custom EQ presets.

Note 5:

Removed the aptX Lossless sub-option under aptX Adaptive. In the new firmware, aptX Lossless is included in the High Quality option. If the device supports aptX Lossless, aptX Lossless is used first.

1.新增低延迟模式

2.新增广播模式

3.新增通话功能

4.新增PEQ功能

5.删除一拖二功能

6.优化iOS APP连接

7.其他性能优化

备注1：

低延迟模式，默认使用经典蓝牙模式，双击多功能按键可在经典蓝牙/低延时模式间切换

低延迟模式自动选择已支持的编解码器，规则如下：

如果设备支持Unicast模式，默认使用LC3

如果设备不支持Unicast模式，则选择aptX Adaptive-Low Latency

如果设备不支持Unicast模式和aptX Adaptive，则选择aptX LL

若以上均不支持，则不支持低延迟模式，功能与经典蓝牙一样

备注2：

广播模式默认使用经典蓝牙模式，三击多功能按键可在经典蓝牙/广播模式间切换

默认使用LC3，可以在APP设置广播名称和广播密码

可以使用支持Auracast的设备搜索广播接收广播

备注3：

使用LC3编解码器时，指示灯蓝灯呼吸

使用LDAC或aptX Adaptive编解码器时，按键切换模式增加语音提示

备注4：

PEQ功能，支持7个预设EQ和3个自定义EQ

备注5：

删除aptX Adaptive模式下的aptX Lossless子选项，新固件aptX Lossless包含在High Quality选项中，若设备支持aptX Lossless，则优先使用aptX Lossless