How to Change the Bluetooth Name on a VHM-314 Audio Receiver Board
Many VHM-314 boards use "AC" series chips (e.g., AC20BP) which require proprietary SDKs to modify. Alternative Solutions for Device Identification
Thank you for your understanding and cooperation. Vhm-314 Change Name
The key is the JieLi AC690X chip, which powers many VHM‑314 boards. A GitHub repository by Christian Kramer (titled JieLi AC690X Familiarization ) contains reverse‑engineering work on the chip’s bootloader, firmware structure, and programming interface. The goal is to understand how to read and write firmware without the manufacturer’s locked keys. Progress has been made, but:
Connect your USB-to-TTL adapter to the board. The tool should display a "Connected" status once the module is powered on. Reading Values: How to Change the Bluetooth Name on a
Changing the permanent name requires accessing the Bluetooth chip's flash memory. CSR SPI USB Programmer (like USB-SPI or similar interface). Soldering iron and wires.
Open the .bin file in a dedicated Hex Editor (such as HxD). Use the "Find" tool to search for the ASCII text string "VHM-314". A GitHub repository by Christian Kramer (titled JieLi
Open the (classic view) and navigate to Devices and Printers .
Use the ISP tool to read the chip's internal flash.
The VHM-314 is a highly popular, low-cost Bluetooth 5.0 audio receiver board used extensively in DIY electronics and audio modification projects. By default, when you power on the board and search for it on your smartphone or computer, it broadcasts a generic Service Set Identifier (SSID) or Bluetooth device name, typically .
More sophisticated Bluetooth modules (such as those based on the HC‑05 or HC‑06 chips) support an “AT command set” that allows you to send text commands over a serial interface to change parameters including the device name. The VHM‑314 is not one of those modules. While some product pages mention that “the MODE pin can be used to change between different audio profiles (AT commands required),” those commands relate to audio behaviour (codec selection, pairing behaviour), not to renaming the device. No publicly documented AT command for changing the Bluetooth broadcast name has ever been found for the VHM‑314 series.
