diff --git a/RaspberryPi&JetsonNano/python/lib/waveshare_epd/epd2in7.py b/RaspberryPi&JetsonNano/python/lib/waveshare_epd/epd2in7.py
index f486424..06cc310 100644
--- a/RaspberryPi&JetsonNano/python/lib/waveshare_epd/epd2in7.py
+++ b/RaspberryPi&JetsonNano/python/lib/waveshare_epd/epd2in7.py
@@ -249,7 +249,8 @@ class EPD:
         for data in self.gray_lut_bb:
             self.send_data(data)
 
-        self.send_command(0x25)  #vcom
+        # self.send_command(0x25)  #vcom
+        self.send_command(LUT_WHITE_TO_WHITE)
         for data in self.gray_lut_ww:
             self.send_data(data)