diff --git a/src/fs/file.h b/src/fs/file.h
index fed98bc..e6244b3 100644
--- a/src/fs/file.h
+++ b/src/fs/file.h
@@ -76,6 +76,11 @@
 #define PHY_OPTS        0x6
 
 #define PHY_OPT_WCID    0x1
+#define PHY_OPT_VPID    0x2
+#define PHY_OPT_GPIO    0x4
+#define PHY_OPT_LED     0x8
+
+#define PHY_OPT_MASK    0x1
 
 #define PHY_MAX_SIZE    8
 
diff --git a/src/main.c b/src/main.c
index 30eb76c..90dc0e5 100644
--- a/src/main.c
+++ b/src/main.c
@@ -432,7 +432,9 @@ int main(void) {
 #ifdef ESP_PLATFORM
     uint8_t gpio = GPIO_NUM_48;
     if (file_has_data(ef_phy)) {
-        gpio = file_get_data(ef_phy)[PHY_LED_GPIO];
+        if (file_read_uint8_offset(ef_phy, PHY_OPTS + 1) & PHY_OPT_GPIO) {
+            gpio = file_get_data(ef_phy)[PHY_LED_GPIO];
+        }
     }
     neopixel = neopixel_Init(1, gpio);
 #endif
diff --git a/src/usb/usb.c b/src/usb/usb.c
index bd7e236..9a2cc63 100644
--- a/src/usb/usb.c
+++ b/src/usb/usb.c
@@ -169,16 +169,17 @@ void usb_init() {
     uint16_t usb_vid = USB_VID, usb_pid = USB_PID;
     if (file_has_data(ef_phy)) {
         uint8_t *data = file_get_data(ef_phy);
-        if (file_get_size(ef_phy) >= 4) {
-            usb_vid = (data[PHY_VID] << 8) | data[PHY_VID+1];
-            usb_pid = (data[PHY_PID] << 8) | data[PHY_PID+1];
-        }
+        uint16_t opts = 0;
         if (file_get_size(ef_phy) >= 8) {
-            uint16_t opts = (data[PHY_OPTS] << 8) | data[PHY_OPTS+1];
+            opts = (data[PHY_OPTS] << 8) | data[PHY_OPTS+1];
             if (opts & PHY_OPT_WCID) {
                 enable_wcid = true;
             }
         }
+        if (file_get_size(ef_phy) >= 4 && opts & PHY_OPT_VPID) {
+            usb_vid = (data[PHY_VID] << 8) | data[PHY_VID+1];
+            usb_pid = (data[PHY_PID] << 8) | data[PHY_PID+1];
+        }
     }
     desc_device.idVendor = usb_vid;
     desc_device.idProduct = usb_pid;