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Use the ISP tool to read the chip's internal flash.
This is the preferred, safest method if your specific VHM-314 revision exposes the Tx (Transmit) and Rx (Receive) lines of the main Bluetooth IC. Required Tools & Hardware
A third: “Jorn.”
Method 3: Software Masking via the Host Device (The Easy Way Out)
The Bluetooth name, device configuration, and firmware are stored directly on this chip or an adjacent surface-mount EEPROM/Flash memory chip. Because these chips are designed for mass-production consumer goods, they are hardcoded at the factory. There is no native USB-to-serial command line interface (like AT commands used in HC-05 modules) available on standard VHM-314 boards out of the box.
The and JL download tool (IsdDownload) software. Step-by-Step Hardware Flashing 1. Locate the Programming Pins Vhm-314 Change Name
Stay informed, stay safe, and always cross-reference nootropic research with primary sources. The name has changed—but the science continues.
HC-05 Bluetooth Module | Change Name and Password | AT Commands
Wire the TX of the VHM-314 to the RX of your USB adapter, and RX to TX . Connect GND to GND . This public link is valid for 7 days
Open your device manager to determine which has been assigned to the adapter. Launch the JieLi Configuration Tool executable.
Type your desired new name directly over the old name. Ensure the new name does not exceed the character length of the original name, or use null bytes ( 00 ) to pad out the remaining space if the new name is shorter. Do not shift the hex offsets.
Locate the icon under the "Devices" or "Audio" list. Right-click the icon and select Properties . Navigate to the Bluetooth tab. Can’t copy the link right now
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.
The chip at the heart of most VHM‑314 boards belongs to the JieLi AC690X family. These chips are programmed at the factory with firmware that is typically A discussion on Hackaday noted: “When programmed there is some kind of key to lock them, [users] couldn’t reprogram them without that key.” Without the manufacturer’s proprietary toolchain and unlock keys, you cannot dump, modify, or re‑flash the firmware. Even if you could, the Bluetooth name is hard‑coded inside the firmware image, not stored in a separate user‑accessible EEPROM.