Vhm-314: Change Name [2021]

Changing the broadcast name of the VHM-314 Bluetooth Audio Receiver

The VHM‑314 is a testament to how far a dollar can go in modern electronics. It delivers wireless audio streaming with surprisingly good quality at a price that is almost unbelievable. But its one persistent flaw – the inability to give it a custom Bluetooth name – has frustrated makers for years.

Inspect the VHM-314 PCB. Look for small, unpopulated copper pads labeled TX , RX , GND , and 5V (or VCC). On some ultra-compact revisions, these pins are not broken out to pads, meaning you must carefully solder wires directly to the physical pins of the SoC package (refer to the specific datasheet pinout for your chip model, such as the JL AC6925A). Vhm-314 Change Name

If "Vhm-314" refers to a specific consumer product (like a specific model of gadget) that I have missed in my database, please let me know, and I will happily rewrite this!

While this does not change the broadcast name transmitted by the VHM-314 hardware to the outside world, it changes how the name is displayed on your personal screen, resolving any identity confusion. On Windows 10/11: Connect your PC to the VHM-314 via Bluetooth. Changing the broadcast name of the VHM-314 Bluetooth

Some VHM‑314 variants store their firmware on an external SPI flash chip (an 8‑pin SOIC‑8 package next to the main processor). If your board has that chip, you can use a hardware programmer (like a TL866 or CH341A) to read the flash contents, search for the Bluetooth name string in the hex dump, overwrite it with a new name of the same length, and then write the modified firmware back to the flash. One blog post about domesticating a Bluetooth speaker’s firmware used exactly this approach to change notification sounds, but the author noted that is the hardest part.

: You will need a USB-to-TTL (Serial) adapter (like a CH340 or CP2102) and a computer. Steps : Inspect the VHM-314 PCB

| Reported Bluetooth Name | Source / Version | Notes | |------------------------|------------------|-------| | XY_BT | Most common default | Used on many “XY‑BT” labelled boards; also documented by multiple sellers. | | VHM-314 | Basic generic name | Listed as the device name in many product descriptions. | | VHM-314-V3.0 | V3.0 version | Official Bluetooth name for the V3.0 board (with EQ and IR control). | | XIDADIANZI | An actual module tested by Raspberry Pi Magazine | The seller claimed the name would be ‘XY_BT’, but the real unit broadcast ‘XIDADIANZI’. | | BT-Speaker | Some generic variants | Used on boards that have been rebadged by third‑party sellers. | | Bluetooth Device | Fallback when no custom firmware present | Some very cheap clones fall back to a bare‑bones system name. |

: Go to Settings > Bluetooth , tap the gear icon next to the connected VHM-314, and select "Rename" .

Stick to basic alphanumeric characters (A–Z, 0–9) and avoid symbols or spaces when naming your device via AT commands or firmware files. Special characters can cause parsing errors in the underlying Bluetooth stack code, resulting in boot loops or a complete failure to advertise the Bluetooth beacon.

Look for Bluetooth modules explicitly labeled with "AT Command Support" or those using the Qualcomm CSR8645 / CSR8675 chips.