diff --git a/util/flash_ec b/util/flash_ec
index f97a693bef..59729e9f2c 100755
--- a/util/flash_ec
+++ b/util/flash_ec
@@ -231,6 +231,11 @@ ec_enable_boot0() {
 	eval ${SERVO_TYPE}_${MCU}_boot0
 }
 
+on_servov3() {
+	grep '^CHROMEOS_RELEASE_BOARD=' /etc/lsb-release | \
+		sed 's/CHROMEOS_RELEASE_BOARD=//'
+}
+
 # Put back the servo and the system in a clean state at exit
 FROZEN_PIDS=""
 cleanup() {
@@ -374,15 +379,21 @@ function flash_openocd() {
 function flash_flashrom() {
 	TOOL_PATH="${EC_DIR}/build/${BOARD}/util:/usr/sbin/:$PATH"
 	FLASHROM=$(PATH="${TOOL_PATH}" which flashrom)
-	FLASHROM_PARAM="-p ft2232_spi:type=servo-v2,port=B"
+	if [ on_servov3 ]; then
+		FLASHROM_PARAM="-p linux_spi"
+	else
+		FLASHROM_PARAM="-p ft2232_spi:type=servo-v2,port=B"
+	fi
 
 	if [ ! -x "$FLASHROM" ]; then
 		die "no flashrom util found."
 	fi
 
-	SERIALNAME=$(${DUT_CONTROL_CMD} serialname | cut -d: -f2)
-	if [[ "$SERIALNAME" != "" ]] ; then
-		FLASHROM_PARAM="${FLASHROM_PARAM},serial=${SERIALNAME}"
+	if [ ! on_servov3 ]; then
+		SERIALNAME=$(${DUT_CONTROL_CMD} serialname | cut -d: -f2)
+		if [[ "$SERIALNAME" != "" ]] ; then
+			FLASHROM_PARAM="${FLASHROM_PARAM},serial=${SERIALNAME}"
+		fi
 	fi
 
 	dut_control cold_reset:on