This firmware can be programmed to any CC2540 board with USB support as it doesn’t require any external peripheral. However if your development board don't have USB already, make sure there is a 1.5K pull-up resistor on D+ line.

They can be got from Ebay or Aliexpress around $10~$15

In order to program them, I had to solder 3 wires, DC, DD and RST. Since there was already a USB port, I supplied power with a USB connector breakout board directly to save 2 wires.

Finally I used CC Debugger to re-flash all chips. I tried to use an Arduino as programmer but I didn't get setup correct. But it is worth trying if you don't have CC Debugger. Here are links:

https://github.com/RedBearLab/CCLoader

https://github.com/wavesoft/CCLib

http://magictale.com/2884/flashing-ble112-with-arduino-based-cc-debugger/

Once those dongle is re-flashed with new firmware, plug them to your Raspberry Pi and enjoy ~.