diff --git a/src/jtag.cpp b/src/jtag.cpp
index 2ba16c2..05209be 100644
--- a/src/jtag.cpp
+++ b/src/jtag.cpp
@@ -67,13 +67,14 @@ using namespace std;
  */
 
 Jtag::Jtag(cable_t &cable, const jtag_pins_conf_t *pin_conf, string dev,
-			const string &serial, uint32_t clkHZ, bool verbose):
+			const string &serial, uint32_t clkHZ, bool verbose,
+			const string &firmware_path):
 			_verbose(verbose),
 			_state(RUN_TEST_IDLE),
 			_tms_buffer_size(128), _num_tms(0),
 			_board_name("nope")
 {
-	init_internal(cable, dev, serial, pin_conf, clkHZ);
+	init_internal(cable, dev, serial, pin_conf, clkHZ, firmware_path);
 }
 
 Jtag::~Jtag()
@@ -83,7 +84,7 @@ Jtag::~Jtag()
 }
 
 void Jtag::init_internal(cable_t &cable, const string &dev, const string &serial,
-	const jtag_pins_conf_t *pin_conf, uint32_t clkHZ)
+	const jtag_pins_conf_t *pin_conf, uint32_t clkHZ, const string &firmware_path)
 {
 	switch (cable.type) {
 	case MODE_ANLOGICCABLE:
@@ -101,7 +102,8 @@ void Jtag::init_internal(cable_t &cable, const string &dev, const string &serial
 		_jtag = new DirtyJtag(clkHZ, _verbose);
 		break;
 	case MODE_USBBLASTER:
-		_jtag = new UsbBlaster(_verbose);
+		_jtag = new UsbBlaster(cable.config.vid, cable.config.pid,
+				firmware_path, _verbose);
 		break;
 	default:
 		std::cerr << "Jtag: unknown cable type" << std::endl;
diff --git a/src/jtag.hpp b/src/jtag.hpp
index 57d7210..e736bf4 100644
--- a/src/jtag.hpp
+++ b/src/jtag.hpp
@@ -30,7 +30,8 @@
 class Jtag {
  public:
 	Jtag(cable_t &cable, const jtag_pins_conf_t *pin_conf, std::string dev,
-		const std::string &serial, uint32_t clkHZ, bool verbose = false);
+		const std::string &serial, uint32_t clkHZ, bool verbose = false,
+		const std::string &firmware_path="");
 	~Jtag();
 
 	/* maybe to update */
@@ -79,7 +80,8 @@ class Jtag {
 
  private:
 	void init_internal(cable_t &cable, const std::string &dev, const std::string &serial,
-		const jtag_pins_conf_t *pin_conf, uint32_t clkHZ);
+		const jtag_pins_conf_t *pin_conf, uint32_t clkHZ,
+		const std::string &firmware_path);
 	bool _verbose;
 	int _state;
 	int _tms_buffer_size;
diff --git a/src/main.cpp b/src/main.cpp
index 2683f50..7ea419b 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -63,6 +63,7 @@ struct arguments {
 	bool spi;
 	string file_type;
 	string fpga_part;
+	string probe_firmware;
 };
 
 int parse_opt(int argc, char **argv, struct arguments *args, jtag_pins_conf_t *pins_config);
@@ -78,7 +79,7 @@ int main(int argc, char **argv)
 	/* command line args. */
 	struct arguments args = {0, false, false, 0, "", "", "-", "", -1, 6000000, "-",
 			false, false, false, false, Device::WR_SRAM, false, false, "",
-			""};
+			"", ""};
 	/* parse arguments */
 	try {
 		if (parse_opt(argc, argv, &args, &pins_config))
@@ -230,7 +231,8 @@ int main(int argc, char **argv)
 	/* jtag base */
 	Jtag *jtag;
 	try {
-		jtag = new Jtag(cable, &pins_config, args.device, args.ftdi_serial, args.freq, false);
+		jtag = new Jtag(cable, &pins_config, args.device, args.ftdi_serial,
+				args.freq, false, args.probe_firmware);
 	} catch (std::exception &e) {
 		printError("Error: Failed to claim cable");
 		return EXIT_FAILURE;
@@ -244,6 +246,8 @@ int main(int argc, char **argv)
 		cout << "found " << std::to_string(found) << " devices" << endl;
 	if (found > 1) {
 		printError("Error: currently only one device is supported");
+		for (int i = 0; i < found; i++)
+			printf("0x%08x\n", listDev[i]);
 		delete(jtag);
 		return EXIT_FAILURE;
 	} else if (found < 1) {
@@ -394,6 +398,8 @@ int parse_opt(int argc, char **argv, struct arguments *args, jtag_pins_conf_t *p
 				cxxopts::value<unsigned int>(args->offset))
 			("pins", "pin config (only for ft232R) TDI:TDO:TCK:TMS",
 				cxxopts::value<vector<string>>(pins))
+			("probe-firmware", "firmware for JTAG probe (usbBlasterII)",
+				cxxopts::value<string>(args->probe_firmware))
 			("quiet", "Produce quiet output (no progress bar)",
 				cxxopts::value<bool>(quiet))
 			("r,reset",   "reset FPGA after operations",