diff --git a/NEWS b/NEWS
index 80afdaaa..313b3ade 100644
--- a/NEWS
+++ b/NEWS
@@ -1,4 +1,66 @@
-
+Version 3.6.1 - 14th October 2013
+
+- Emulate the libusb_control_transfer sync setup in our async variant.
+- usbutils - make all libusb_error_name messages the same
+
+
+Version 3.6.0 - 14th October 2013
+
+- increasing max miners for avalon driver
+- using separate identifier for bitburner fury boards
+- changes to bitburner driver for bitburner fury boards
+- hexstr is too small in test_work_current
+- Windows uses errno for WSAETIMEDOUT
+- Convert the usb callback function to using cgsem_t timed waits to avoid race
+conditions with conditionals/mutexes.
+- Give correct return code in cgsem_mswait
+- Check for correct timeout error in cgsem_mswait
+- Fix util.h exports for cgsem_mswait
+- Implement a generic cgsem_mswait similar to sem_timedwait
+- Use the one LIBUSB_ERROR_TIMEOUT for cancelled transactions since this error
+is explicitly tested for in various drivers.
+- Do not use locking on usb callback function pthread signalling to prevent
+deadlock with libusb's own event lock.
+- Use a write lock when performing any USB control transfers to prevent
+concurrent transfers.
+- Free a libusb transfer after we have finished using it to avoid a dereference
+in usb_control_transfer
+- Do not perform bfi int patching for opencl1.2 or later.
+- Although async transfers are meant to use heap memory, we never return before
+the transfer function has completed so stack memory will suffice for control
+transfers, fixing a memory leak in the process.
+- klondike - correct/reverse min/max stats
+- api incorrect message name
+- klondike - use a link list queue rather than a circular buffer - and add
+timing stats
+- Use a timeout with usb handle events set to a nominal 200ms and wait for the
+polling thread to shut down before deinitialising libusb.
+- Use stack memory for hex used in stratum share submissions.
+- Use stack memory in test_work_current, avoiding a malloc/free cycle each time.
+- Provide a lower level __bin2hex function that does not allocate memory itself.
+- Convert the bitfury driver to use the hash_driver_work version of hash_work.
+- Add a hash_driver_work function to allow for drivers that wish to do their own
+work queueing and management.
+- Convert all usb control transfers to asynchronous communication with our own
+timeout management as well.
+- Klondike - increase circular read buffer size
+- Klondike - extra zero value and range checking in temp conversion
+- klondike - display MHz also
+- Make pthread conditional timeouts handle all bulk usb transfer timeouts
+performing libusb_cancel_transfer, disabling timeouts within libusb itself.
+- Avoid calling get_statline_before on exit to avoid trying to use it on drivers
+in an indeterminate state.
+- Avoid calling get_statline on exit.
+- Add a small amount to the usb timeout before cancelling to allow for a regular
+usb polling interval to pass.
+- Do not attempt to clear a usb halt before sending the cancel message since all
+transfers should normally be cancelled before attempting to clear a halt
+condition, and only change the return message to a timeout if it's consistent
+with a cancellation.
+- Retry up to USB_RETRY_MAX times to clear a halt condition before failing.
+- Show the error number as well as the description in erroring bulk transfers.
+- Drop logging level for failed to connect to stratum to verbose mode only since
+we hit it regularly.
 - We are always dependent on libusb handling events so use the blocking
 libusb_handle_events in the polling thread and use a bool to know if we should
 continue polling.
diff --git a/cgminer.c b/cgminer.c
index f406f880..c0b8d2e6 100644
--- a/cgminer.c
+++ b/cgminer.c
@@ -1245,7 +1245,10 @@ static struct opt_table opt_config_table[] = {
 		     "Set avalon target temperature"),
 	OPT_WITH_ARG("--bitburner-voltage",
 		     opt_set_intval, NULL, &opt_bitburner_core_voltage,
-		     "Set BitBurner core voltage, in millivolts"),
+		     "Set BitBurner (Avalon) core voltage, in millivolts"),
+	OPT_WITH_ARG("--bitburner-fury-voltage",
+		     opt_set_intval, NULL, &opt_bitburner_fury_core_voltage,
+		     "Set BitBurner Fury core voltage, in millivolts"),
 #endif
 #ifdef USE_KLONDIKE
 	OPT_WITH_ARG("--klondike-options",
diff --git a/configure.ac b/configure.ac
index d1270f20..ee8aba4b 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,8 +1,8 @@
 ##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
 ##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
 m4_define([v_maj], [3])
-m4_define([v_min], [5])
-m4_define([v_mic], [0])
+m4_define([v_min], [6])
+m4_define([v_mic], [1])
 ##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##--##
 m4_define([v_ver], [v_maj.v_min.v_mic])
 m4_define([lt_rev], m4_eval(v_maj + v_min))
diff --git a/driver-avalon.c b/driver-avalon.c
index 341a6353..09e6dfa2 100644
--- a/driver-avalon.c
+++ b/driver-avalon.c
@@ -49,6 +49,7 @@ int opt_avalon_fan_max = AVALON_DEFAULT_FAN_MAX_PWM;
 int opt_avalon_freq_min = AVALON_MIN_FREQUENCY;
 int opt_avalon_freq_max = AVALON_MAX_FREQUENCY;
 int opt_bitburner_core_voltage = BITBURNER_DEFAULT_CORE_VOLTAGE;
+int opt_bitburner_fury_core_voltage = BITBURNER_FURY_DEFAULT_CORE_VOLTAGE;
 bool opt_avalon_auto;
 
 static int option_offset = -1;
@@ -209,6 +210,55 @@ static int avalon_send_task(const struct avalon_task *at, struct cgpu_info *aval
 	return ret;
 }
 
+static int bitburner_send_task(const struct avalon_task *at, struct cgpu_info *avalon)
+
+{
+	uint8_t buf[AVALON_WRITE_SIZE + 4 * AVALON_DEFAULT_ASIC_NUM];
+	int ret, ep = C_AVALON_TASK;
+	cgtimer_t ts_start;
+	size_t nr_len;
+
+	if (at->nonce_elf)
+		nr_len = AVALON_WRITE_SIZE + 4 * at->asic_num;
+	else
+		nr_len = AVALON_WRITE_SIZE;
+
+	memset(buf, 0, nr_len);
+	memcpy(buf, at, AVALON_WRITE_SIZE);
+
+#if defined(__BIG_ENDIAN__) || defined(MIPSEB)
+	uint8_t tt = 0;
+
+	tt = (buf[0] & 0x0f) << 4;
+	tt |= ((buf[0] & 0x10) ? (1 << 3) : 0);
+	tt |= ((buf[0] & 0x20) ? (1 << 2) : 0);
+	tt |= ((buf[0] & 0x40) ? (1 << 1) : 0);
+	tt |= ((buf[0] & 0x80) ? (1 << 0) : 0);
+	buf[0] = tt;
+
+	tt = (buf[4] & 0x0f) << 4;
+	tt |= ((buf[4] & 0x10) ? (1 << 3) : 0);
+	tt |= ((buf[4] & 0x20) ? (1 << 2) : 0);
+	tt |= ((buf[4] & 0x40) ? (1 << 1) : 0);
+	tt |= ((buf[4] & 0x80) ? (1 << 0) : 0);
+	buf[4] = tt;
+#endif
+
+	if (at->reset) {
+		ep = C_AVALON_RESET;
+		nr_len = 1;
+	}
+	if (opt_debug) {
+		applog(LOG_DEBUG, "Avalon: Sent(%u):", (unsigned int)nr_len);
+		hexdump(buf, nr_len);
+	}
+	cgsleep_prepare_r(&ts_start);
+	ret = avalon_write(avalon, (char *)buf, nr_len, ep);
+	cgsleep_us_r(&ts_start, 3000); // 3 ms = 333 tasks per second, or 1.4 TH/s
+
+	return ret;
+}
+
 static bool avalon_decode_nonce(struct thr_info *thr, struct cgpu_info *avalon,
 				struct avalon_info *info, struct avalon_result *ar,
 				struct work *work)
@@ -414,12 +464,12 @@ static bool get_options(int this_option_offset, int *baud, int *miner_count,
 
 		if (*colon) {
 			tmp = atoi(colon);
-			if (tmp > 0 && tmp <= AVALON_DEFAULT_MINER_NUM) {
+			if (tmp > 0 && tmp <= AVALON_MAX_MINER_NUM) {
 				*miner_count = tmp;
 			} else {
 				quit(1, "Invalid avalon-options for "
 					"miner_count (%s) must be 1 ~ %d",
-					colon, AVALON_DEFAULT_MINER_NUM);
+					colon, AVALON_MAX_MINER_NUM);
 			}
 		}
 
@@ -620,12 +670,20 @@ static void avalon_initialise(struct cgpu_info *avalon)
 		avalon->drv->name, avalon->device_id, err);
 }
 
+static bool is_bitburner(struct cgpu_info *avalon)
+{
+	enum sub_ident ident;
+
+	ident = usb_ident(avalon);
+	return ident == IDENT_BTB || ident == IDENT_BBF;
+}
+
 static bool bitburner_set_core_voltage(struct cgpu_info *avalon, int core_voltage)
 {
 	uint8_t buf[2];
 	int err;
 
-	if (usb_ident(avalon) == IDENT_BTB) {
+	if (is_bitburner(avalon)) {
 		buf[0] = (uint8_t)core_voltage;
 		buf[1] = (uint8_t)(core_voltage >> 8);
 		err = usb_transfer_data(avalon, FTDI_TYPE_OUT, BITBURNER_REQUEST,
@@ -651,7 +709,7 @@ static int bitburner_get_core_voltage(struct cgpu_info *avalon)
 	int err;
 	int amount;
 
-	if (usb_ident(avalon) == IDENT_BTB) {
+	if (is_bitburner(avalon)) {
 		err = usb_transfer_read(avalon, FTDI_TYPE_IN, BITBURNER_REQUEST,
 				BITBURNER_VALUE, BITBURNER_INDEX_GET_VOLTAGE,
 				(char *)buf, sizeof(buf), &amount,
@@ -780,7 +838,18 @@ static bool avalon_detect_one(libusb_device *dev, struct usb_find_devices *found
 				BITBURNER_MAX_COREMV);
 		} else
 			bitburner_set_core_voltage(avalon, opt_bitburner_core_voltage);
+	} else if (usb_ident(avalon) == IDENT_BBF) {
+		if (opt_bitburner_fury_core_voltage < BITBURNER_FURY_MIN_COREMV ||
+		    opt_bitburner_fury_core_voltage > BITBURNER_FURY_MAX_COREMV) {
+			quit(1, "Invalid bitburner-fury-voltage %d must be %dmv - %dmv",
+				opt_bitburner_fury_core_voltage,
+				BITBURNER_FURY_MIN_COREMV,
+				BITBURNER_FURY_MAX_COREMV);
+		} else
+			bitburner_set_core_voltage(avalon, opt_bitburner_fury_core_voltage);
+	}
 
+	if (is_bitburner(avalon)) {
 		bitburner_get_version(avalon);
 	}
 
@@ -1181,7 +1250,7 @@ static void *bitburner_send_tasks(void *userdata)
 				avalon_reset_auto(info);
 			}
 
-			ret = avalon_send_task(&at, avalon);
+			ret = bitburner_send_task(&at, avalon);
 
 			if (unlikely(ret == AVA_SEND_ERROR)) {
 				applog(LOG_ERR, "%s%i: Comms error(buffer)",
@@ -1211,7 +1280,7 @@ static bool avalon_prepare(struct thr_info *thr)
 	int array_size = AVALON_ARRAY_SIZE;
 	void *(*write_thread_fn)(void *) = avalon_send_tasks;
 
-	if (usb_ident(avalon) == IDENT_BTB) {
+	if (is_bitburner(avalon)) {
 		array_size = BITBURNER_ARRAY_SIZE;
 		write_thread_fn = bitburner_send_tasks;
 	}
@@ -1356,7 +1425,7 @@ static void avalon_update_temps(struct cgpu_info *avalon, struct avalon_info *in
 	info->temp_sum += avalon->temp;
 	applog(LOG_DEBUG, "Avalon: temp_index: %d, temp_count: %d, temp_old: %d",
 		info->temp_history_index, info->temp_history_count, info->temp_old);
-	if (usb_ident(avalon) == IDENT_BTB) {
+	if (is_bitburner(avalon)) {
 		info->core_voltage = bitburner_get_core_voltage(avalon);
 	}
 	if (info->temp_history_index == info->temp_history_count) {
@@ -1378,7 +1447,7 @@ static void get_avalon_statline_before(char *buf, size_t bufsiz, struct cgpu_inf
 	struct avalon_info *info = avalon->device_data;
 	int lowfan = 10000;
 
-	if (usb_ident(avalon) == IDENT_BTB) {
+	if (is_bitburner(avalon)) {
 		int temp = info->temp0;
 		if (info->temp2 > temp)
 			temp = info->temp2;
@@ -1464,7 +1533,7 @@ static int64_t avalon_scanhash(struct thr_info *thr)
 
 	/* Check for nothing but consecutive bad results or consistently less
 	 * results than we should be getting and reset the FPGA if necessary */
-	if (usb_ident(avalon) != IDENT_BTB) {
+	if (!is_bitburner(avalon)) {
 		if (avalon->results < -miner_count && !info->reset) {
 			applog(LOG_ERR, "%s%d: Result return rate low, resetting!",
 				avalon->drv->name, avalon->device_id);
@@ -1525,7 +1594,7 @@ static struct api_data *avalon_api_stats(struct cgpu_info *cgpu)
 		sprintf(mcw, "match_work_count%d", i + 1);
 		root = api_add_int(root, mcw, &(info->matching_work[i]), false);
 	}
-	if (usb_ident(cgpu) == IDENT_BTB) {
+	if (is_bitburner(cgpu)) {
 		root = api_add_int(root, "core_voltage", &(info->core_voltage), false);
 		snprintf(buf, sizeof(buf), "%"PRIu8".%"PRIu8".%"PRIu8,
 				info->version1, info->version2, info->version3);
@@ -1553,7 +1622,7 @@ static char *avalon_set_device(struct cgpu_info *avalon, char *option, char *set
 	}
 
 	if (strcasecmp(option, "millivolts") == 0 || strcasecmp(option, "mv") == 0) {
-		if (usb_ident(avalon) != IDENT_BTB) {
+		if (!is_bitburner(avalon)) {
 			sprintf(replybuf, "%s cannot set millivolts", avalon->drv->name);
 			return replybuf;
 		}
diff --git a/driver-avalon.h b/driver-avalon.h
index 54dc5e2b..e506388e 100644
--- a/driver-avalon.h
+++ b/driver-avalon.h
@@ -33,11 +33,18 @@
 #define AVALON_TEMP_HYSTERESIS 3
 #define AVALON_TEMP_OVERHEAT 60
 
+/* Avalon-based BitBurner. */
 #define BITBURNER_DEFAULT_CORE_VOLTAGE 1200 /* in millivolts */
 #define BITBURNER_MIN_COREMV 1000
 /* change here if you want to risk killing it :)  */
 #define BITBURNER_MAX_COREMV 1400
 
+/* BitFury-based BitBurner. */
+#define BITBURNER_FURY_DEFAULT_CORE_VOLTAGE 900 /* in millivolts */
+#define BITBURNER_FURY_MIN_COREMV 700
+/* change here if you want to risk killing it :)  */
+#define BITBURNER_FURY_MAX_COREMV 1100
+
 
 #define AVALON_DEFAULT_TIMEOUT 0x2D
 #define AVALON_MIN_FREQUENCY 256
@@ -45,6 +52,7 @@
 #define AVALON_TIMEOUT_FACTOR 12690
 #define AVALON_DEFAULT_FREQUENCY 282
 #define AVALON_DEFAULT_MINER_NUM 0x20
+#define AVALON_MAX_MINER_NUM 0x100
 #define AVALON_DEFAULT_ASIC_NUM 0xA
 
 #define AVALON_AUTO_CYCLE 1024
@@ -122,7 +130,7 @@ struct avalon_info {
 	int core_voltage;
 
 	int no_matching_work;
-	int matching_work[AVALON_DEFAULT_MINER_NUM];
+	int matching_work[AVALON_MAX_MINER_NUM];
 
 	int frequency;
 	uint32_t ctlr_ver;
@@ -179,6 +187,7 @@ extern int opt_avalon_freq_min;
 extern int opt_avalon_freq_max;
 extern bool opt_avalon_auto;
 extern int opt_bitburner_core_voltage;
+extern int opt_bitburner_fury_core_voltage;
 extern char *set_avalon_fan(char *arg);
 extern char *set_avalon_freq(char *arg);
 
diff --git a/driver-klondike.c b/driver-klondike.c
index 69834657..91e4ca90 100644
--- a/driver-klondike.c
+++ b/driver-klondike.c
@@ -696,18 +696,20 @@ static void klondike_check_nonce(struct cgpu_info *klncgpu, KLIST *kitem)
 			klninfo->delay_count++;
 			klninfo->delay_total += us_diff;
 
-			us_diff = us_tdiff(&(kitem->tv_when), &(klninfo->tv_last_nonce_received));
-			if (klninfo->nonce_count == 0) {
-				klninfo->nonce_min = us_diff;
-				klninfo->nonce_max = us_diff;
-			} else {
-				if (klninfo->nonce_min > us_diff)
+			if (klninfo->nonce_count > 0) {
+				us_diff = us_tdiff(&(kitem->tv_when), &(klninfo->tv_last_nonce_received));
+				if (klninfo->nonce_count == 1) {
 					klninfo->nonce_min = us_diff;
-				if (klninfo->nonce_max < us_diff)
 					klninfo->nonce_max = us_diff;
+				} else {
+					if (klninfo->nonce_min > us_diff)
+						klninfo->nonce_min = us_diff;
+					if (klninfo->nonce_max < us_diff)
+						klninfo->nonce_max = us_diff;
+				}
+				klninfo->nonce_total += us_diff;
 			}
 			klninfo->nonce_count++;
-			klninfo->nonce_total += us_diff;
 
 			memcpy(&(klninfo->tv_last_nonce_received), &(kitem->tv_when),
 				sizeof(klninfo->tv_last_nonce_received));
diff --git a/usbutils.c b/usbutils.c
index cd7152d7..320838a8 100644
--- a/usbutils.c
+++ b/usbutils.c
@@ -309,6 +309,18 @@ static struct usb_find_devices find_dev[] = {
 		.timeout = AVALON_TIMEOUT_MS,
 		.latency = 10,
 		INTINFO(ava_ints) },
+	{
+		.drv = DRIVER_avalon,
+		.name = "BBF",
+		.ident = IDENT_BBF,
+		.idVendor = IDVENDOR_FTDI,
+		.idProduct = 0x6001,
+		.iManufacturer = "Burnin Electronics",
+		.iProduct = "BitBurner Fury",
+		.config = 1,
+		.timeout = AVALON_TIMEOUT_MS,
+		.latency = 10,
+		INTINFO(ava_ints) },
 	{
 		.drv = DRIVER_avalon,
 		.name = "AVA",
@@ -798,11 +810,11 @@ static void usb_full(ssize_t *count, libusb_device *dev, char **buf, size_t *off
 
 	err = libusb_get_string_descriptor_ascii(handle, desc.iManufacturer, man, STRBUFLEN);
 	if (err < 0)
-		snprintf((char *)man, sizeof(man), "** err(%d)%s", err, libusb_error_name(err));
+		snprintf((char *)man, sizeof(man), "** err:(%d) %s", err, libusb_error_name(err));
 
 	err = libusb_get_string_descriptor_ascii(handle, desc.iProduct, prod, STRBUFLEN);
 	if (err < 0)
-		snprintf((char *)prod, sizeof(prod), "** err(%d)%s", err, libusb_error_name(err));
+		snprintf((char *)prod, sizeof(prod), "** err:(%d) %s", err, libusb_error_name(err));
 
 	if (level == 0) {
 		libusb_close(handle);
@@ -878,7 +890,7 @@ static void usb_full(ssize_t *count, libusb_device *dev, char **buf, size_t *off
 
 	err = libusb_get_string_descriptor_ascii(handle, desc.iSerialNumber, ser, STRBUFLEN);
 	if (err < 0)
-		snprintf((char *)ser, sizeof(ser), "** err(%d)%s", err, libusb_error_name(err));
+		snprintf((char *)ser, sizeof(ser), "** err:(%d) %s", err, libusb_error_name(err));
 
 	snprintf(tmp, sizeof(tmp), EOL "     dev %d: More Info:" EOL "\tManufacturer: '%s'" EOL
 			"\tProduct: '%s'" EOL "\tSerial '%s'",
@@ -898,7 +910,7 @@ void usb_all(int level)
 
 	count = libusb_get_device_list(NULL, &list);
 	if (count < 0) {
-		applog(LOG_ERR, "USB all: failed, err %d%s", (int)count, libusb_error_name((int)count));
+		applog(LOG_ERR, "USB all: failed, err:(%d) %s", (int)count, libusb_error_name((int)count));
 		return;
 	}
 
@@ -2577,8 +2589,8 @@ int _usb_read(struct cgpu_info *cgpu, int intinfo, int epinfo, char *buf, size_t
 
 out_unlock:
 	if (err && err != LIBUSB_ERROR_TIMEOUT) {
-		applog(LOG_WARNING, "%s %i usb read error: %s", cgpu->drv->name, cgpu->device_id,
-		       libusb_error_name(err));
+		applog(LOG_WARNING, "%s %i usb read err:(%d) %s", cgpu->drv->name, cgpu->device_id,
+		       err, libusb_error_name(err));
 		if (cgpu->usbinfo.continuous_ioerr_count > USB_RETRY_MAX)
 			err = LIBUSB_ERROR_OTHER;
 	}
@@ -2677,8 +2689,8 @@ int _usb_write(struct cgpu_info *cgpu, int intinfo, int epinfo, char *buf, size_
 	*processed = tot;
 
 	if (err) {
-		applog(LOG_WARNING, "%s %i usb write error: %s", cgpu->drv->name, cgpu->device_id,
-		       libusb_error_name(err));
+		applog(LOG_WARNING, "%s %i usb write err:(%d) %s", cgpu->drv->name, cgpu->device_id,
+		       err, libusb_error_name(err));
 		if (cgpu->usbinfo.continuous_ioerr_count > USB_RETRY_MAX)
 			err = LIBUSB_ERROR_OTHER;
 	}
@@ -2707,15 +2719,17 @@ static int usb_control_transfer(libusb_device_handle *dev_handle, uint8_t bmRequ
 	init_usb_transfer(&ut);
 	libusb_fill_control_setup(buf, bmRequestType, bRequest, wValue,
 				  wIndex, wLength);
+	if ((bmRequestType & LIBUSB_ENDPOINT_DIR_MASK) == LIBUSB_ENDPOINT_OUT)
+		memcpy(buf + LIBUSB_CONTROL_SETUP_SIZE, buffer, wLength);
 	libusb_fill_control_transfer(ut.transfer, dev_handle, buf, transfer_callback,
 				     &ut, 0);
 	err = libusb_submit_transfer(ut.transfer);
 	if (!err)
 		err = callback_wait(&ut, &transferred, timeout);
-	if (!err && transferred) {
-		unsigned char *ofbuf = libusb_control_transfer_get_data(ut.transfer);
-
-		memcpy(buffer, ofbuf, transferred);
+	if (err == LIBUSB_TRANSFER_COMPLETED && transferred) {
+		if ((bmRequestType & LIBUSB_ENDPOINT_DIR_MASK) == LIBUSB_ENDPOINT_IN)
+			memcpy(buffer, libusb_control_transfer_get_data(ut.transfer),
+			       transferred);
 		err = transferred;
 		goto out;
 	}
@@ -2793,7 +2807,7 @@ int __usb_transfer(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bReques
 	IOERR_CHECK(cgpu, err);
 
 	if (err < 0 && err != LIBUSB_ERROR_TIMEOUT) {
-		applog(LOG_WARNING, "%s %i usb transfer error(%d): %s", cgpu->drv->name, cgpu->device_id,
+		applog(LOG_WARNING, "%s %i usb transfer err:(%d) %s", cgpu->drv->name, cgpu->device_id,
 		       err, libusb_error_name(err));
 	}
 out_:
@@ -2881,7 +2895,7 @@ int _usb_transfer_read(struct cgpu_info *cgpu, uint8_t request_type, uint8_t bRe
 		err = 0;
 	}
 	if (err < 0 && err != LIBUSB_ERROR_TIMEOUT) {
-		applog(LOG_WARNING, "%s %i usb transfer read error(%d): %s", cgpu->drv->name, cgpu->device_id,
+		applog(LOG_WARNING, "%s %i usb transfer read err:(%d) %s", cgpu->drv->name, cgpu->device_id,
 		       err, libusb_error_name(err));
 	}
 out_noerrmsg:
diff --git a/usbutils.h b/usbutils.h
index 426f29e3..05c94ada 100644
--- a/usbutils.h
+++ b/usbutils.h
@@ -148,6 +148,7 @@ enum sub_ident {
 	IDENT_MMQ,
 	IDENT_AVA,
 	IDENT_BTB,
+	IDENT_BBF,
 	IDENT_KLN,
 	IDENT_ICA,
 	IDENT_AMU,