Vhm-314 Change Name [better] [TOP]

If you have the space, an ESP32 can be programmed as an A2DP sink with any name you choose. 3. Physical Labeling

Understanding the naming limitations of the VHM-314 will save you time and frustration. The key takeaway is that the Bluetooth name on this module cannot be permanently changed. However, by accepting this limitation and using the simple workarounds described, you can still make this excellent low-cost module work for your projects. If you need absolute control over your Bluetooth device name, the VHM-314 may not be the right choice—but for any project where a consistent name is not critical, it remains an unbeatable option.

Open your device manager to determine which has been assigned to the adapter. Launch the JieLi Configuration Tool executable. Vhm-314 Change Name

Re-clip the chip, load your original untouched backup .bin file, and flash it back to factory defaults.

Select "Write Selected" or save the configuration back to the device to apply changes. If you have the space, an ESP32 can

Carefully solder wires from the SPI programmer to these points.

Unplug USB, readjust the clip jaws on the chip pins to scrape away residual manufacturing flux, and try again. Corrupted configuration sector or broken hex formatting. The key takeaway is that the Bluetooth name

Open the saved hex file in a Hex Editor (such as HxD). Use the text search function to find the default string, "XY-BT" or "VHM-314."

Do not change the overall file size of the .bin image. If your new name is shorter than "VHM-314" (7 characters), fill the remaining empty character slots with null bytes ( 00 in hex). If your new name is longer, ensure you do not overwrite critical adjacent code bytes, or the board will crash.

These chips store configuration parameters—including the Bluetooth Device Name (Local Name), volume levels, and pairing codes—inside a small configuration sector of their internal flash memory or an adjacent 8-pin external EEPROM chip (often a 24C or 25-series variant).