Software: Flash-Tool, VS1000 UART-Control Firmware
Remove all connections from the Breakout Board.
Set CS1 to low: add a wire from GND to R5 (100k).
Connect the Board to the PC via USB and press the Power button on the Board.
Check the new drive. There should be only one file: NO_FLASH.
Run the VS1000D-Tool (vs1000d.exe)
Make the following settings and press USB Search:
Nominal Size: 256 MByte Block Size: 128 kByte Page Size: 2 kByte
Copy the file boot.img to the new drive with the Windows Explorer.
Select VS1000D -> USB Boot
Remove the USB connection from the Board.
Remove the short-circuit between CS1 and GND.
Now you can control the Board via Rx/Tx (UART).
Baud rate: 115200 Data: 8 Stop: 1 Parity: None Voltage: 3.3V
The commands can be found in the file uartcontrol.txt.