diff --git a/Readme.txt b/Readme.txt
index 20bb9b3..dc5f250 100644
--- a/Readme.txt
+++ b/Readme.txt
@@ -70,10 +70,12 @@ Flash的0x39000处存放有墨水屏所使用的IO的信息:
 
 Flash的0x3a000处存放有墨水屏的分辨率等信息:
 
+    00 25 00 00 92 fa a8 fe 00 01 80 00 28 01 04 00
+                                  0080  0128          128x296  BWR
     40 1f 00 00 f0 70 18 01 00 01 7a 00 fa 00 fc 07
-                                007a  00fa          122x250
+                                  007a  00fa          122x250  BWR
     c4 0a 00 00 1a 4f ae 5a 00 00 68 00 d4 00 04 00
-                                0068  00d4          104x212
+                                  0068  00d4          104x212  BW
 
 原版的固件，不知道什么原因，无法用蓝牙搜索到。否则可以无损更新固件了(但大多数价签的电池都是没电的，还是得拆开)。
 
diff --git a/src/epd/epd.c b/src/epd/epd.c
index ec3de90..7f3ed7f 100644
--- a/src/epd/epd.c
+++ b/src/epd/epd.c
@@ -14,6 +14,10 @@ int scr_padding;
 int update_mode;
 int lut_size;
 
+int detect_w = 104;
+int detect_h = 212;
+int detect_mode = EPD_BW;
+
 
 // 窗口参数
 int win_w;
@@ -356,6 +360,7 @@ void epd_screen_update(void)
 	for(i=0; i<win_h*line_bytes; i++){
 		epd_data(fb_bw[i]);
 	}
+
 	if(scr_mode&EPD_BWR){
 		epd_cmd(0x26);
 		for(i=0; i<win_h*line_bytes; i++){
diff --git a/src/epd/epd.h b/src/epd/epd.h
index 159d0f9..11cd03f 100644
--- a/src/epd/epd.h
+++ b/src/epd/epd.h
@@ -73,7 +73,9 @@ int select_font(int id);
 void fb_test(void);
 
 
+#define EPD_BW    0x00
 #define EPD_BWR   0x20
+
 #define MIRROR_H  0x40
 #define MIRROR_V  0x80
 #define ROTATE_0  0x00 // 0
@@ -99,6 +101,12 @@ extern int line_bytes;
 extern int scr_padding;
 extern int update_mode;
 
+
+extern int detect_w;
+extern int detect_h;
+extern int detect_mode;
+
+
 extern int win_w;
 extern int win_h;
 
diff --git a/src/epd/epd_gui.c b/src/epd/epd_gui.c
index e66880e..b375175 100644
--- a/src/epd/epd_gui.c
+++ b/src/epd/epd_gui.c
@@ -10,7 +10,7 @@
 int fb_w;
 int fb_h;
 
-#define FB_SIZE 4096
+#define FB_SIZE 4736
 u8 fb_bw[FB_SIZE];
 u8 fb_rr[FB_SIZE];
 
diff --git a/src/epd/spi_flash.c b/src/epd/spi_flash.c
index 0dab4f4..00d2ac4 100644
--- a/src/epd/spi_flash.c
+++ b/src/epd/spi_flash.c
@@ -346,6 +346,34 @@ int selflash(int otp_boot)
 	int id = sf_readid();
 	printk("Flash  ID: %08x\n", id);
 
+	sf_read(0x39000, 16, pbuf);
+	printk("39000: ");
+	for(int i=0; i<16; i++){
+		printk(" %02x", pbuf[i]);
+	}
+	printk("\n");
+	printk("EPD Type: %02x\n", pbuf[0]);
+	if(pbuf[1]==0x01){
+		printk("EPD Gpio: %02x %02x %02x %02x %02x %02x %02x %02x\n",
+			pbuf[8], pbuf[9], pbuf[10], pbuf[11], pbuf[12], pbuf[13], pbuf[14], pbuf[15]);
+	}
+
+	sf_read(0x3a000, 16, pbuf);
+	printk("3a000: ");
+	for(int i=0; i<16; i++){
+		printk(" %02x", pbuf[i]);
+	}
+	printk("\n");
+
+	int xres = *(u16*)(pbuf+10);
+	int yres = *(u16*)(pbuf+12);
+	if(xres<512 && yres<512){
+		detect_w = xres;
+		detect_h = yres;
+		detect_mode = pbuf[9]? EPD_BWR : EPD_BW;
+		printk("EPD  Res: %dx%d  %d\n", xres, yres, pbuf[9]);
+	}
+
 	int region_table = (int)&Region$$Table$$Base;
 	int firm_size = *(u32*)(region_table+0x10) - 0x07fc0000;
 	printk("Firm size: %08x\n", firm_size);
diff --git a/src/user_peripheral.c b/src/user_peripheral.c
index d7957f7..a541bca 100644
--- a/src/user_peripheral.c
+++ b/src/user_peripheral.c
@@ -183,13 +183,14 @@ void user_app_init(void)
 	adv_state = 0;
 	fspi_config(0x00030605);
 
-	epd_hw_init(0x23200700, 0x05210006, 104, 212, ROTATE_3);  // 2.13黑白屏，6个测试点
+	selflash(otp_boot);
+
+	epd_hw_init(0x23200700, 0x05210006, detect_w, detect_h, detect_mode | ROTATE_3);  // 2.13黑白屏，6个测试点
 	if(epd_detect()==0){
-		epd_hw_init(0x23111000, 0x07210120, 104, 212, ROTATE_3);  // 2.13黑白屏，5个测试点
+		epd_hw_init(0x23111000, 0x07210120, detect_w, detect_h, detect_mode | ROTATE_3);  // 2.13黑白屏，5个测试点
 		epd_detect();
 	}
 
-	selflash(otp_boot);
 
     default_app_on_init();
 }