Purpose of Update: This firmware update addresses the issues of : Fix cracking/popping noise with AD headphones. (Only for batch No. 24F1 and after)
Required Materials: Windows PC
Step-by-Step Device Firmware Update (DFU) Guide:
Step 1:Plug C81 into your PC.
Step 2: Download the DFU file on your windows PC
File: C81 new firmware
Step 3: Download & Install Bluesuite to Perform DFU
Click and download the DFU tool here - BlueSuite.WIN.3.3 Installer and install it on your computer. Once download the DFU tool, unzip it and double click the file to install
Find “HidDfuAPP” in “all programs” on your computer once installed and select the DFU file which you just download in "ChooseFile". Click"Run". Then DFU will be done.
Once updated, it will show like this
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