diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb84aa9..9f56635 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,7 +20,7 @@ set(TARGET_C_SOURCES
     "Core/Src/libc-hooks.c"
     "Core/Src/libc-lock.c"
     "Core/Src/main.c"
-    "Core/Src/oled_impl.c"
+    "Core/Src/epd_impl.c"
     "Core/Src/stm32h7xx_it.c"
     "Core/Src/stm32h7xx_hal_msp.c"
     "Core/Src/stm32h7xx_hal_timebase_tim.c"
@@ -66,6 +66,7 @@ set(TARGET_C_SOURCES
     "Middlewares/Third_Party/FatFs/src/diskio.c"
     "Middlewares/Third_Party/FatFs/src/ff.c"
     "Middlewares/Third_Party/FatFs/src/ff_gen_drv.c"
+    "Middlewares/Third_Party/FatFs/src/option/ccsbcs.c"
     "Middlewares/Third_Party/FatFs/src/option/syscall.c"
     "Middlewares/Third_Party/FreeRTOS/Source/croutine.c"
     "Middlewares/Third_Party/FreeRTOS/Source/event_groups.c"
diff --git a/Core/Inc/epd_impl.h b/Core/Inc/epd_impl.h
new file mode 100644
index 0000000..6416150
--- /dev/null
+++ b/Core/Inc/epd_impl.h
@@ -0,0 +1,13 @@
+#ifndef EPD_IMPL_H
+#define EPD_IMPL_H
+
+#include "epd_common.h"
+
+#define EPD_IMPL_CMD_DC_CHANGE_AT_PARAM 1
+
+int epd_impl_init(void);
+epd_ret_t epd_impl_reset_cb(void *handle);
+epd_ret_t epd_impl_write_cmd_cb(void *handle, uint8_t *cmd, uint32_t len);
+epd_ret_t epd_impl_write_data_cb(void *handle, uint8_t *data, uint32_t len);
+
+#endif
\ No newline at end of file
diff --git a/Core/Src/oled_impl.c b/Core/Src/epd_impl.c
similarity index 56%
rename from Core/Src/oled_impl.c
rename to Core/Src/epd_impl.c
index f10234e..cc1b683 100644
--- a/Core/Src/oled_impl.c
+++ b/Core/Src/epd_impl.c
@@ -1,5 +1,6 @@
+#include "epd_impl.h"
+
 #include "cmsis_os.h"
-#include "oled_panel_elw1501aa.h"
 #include "main.h"
 #include "stm32h7xx_hal.h"
 
@@ -7,13 +8,12 @@ extern SPI_HandleTypeDef hspi1;
 
 static osSemaphoreId_t s_spi_semphr;
 
-int ewl_impl_init(void) {
+int epd_impl_init(void) {
     s_spi_semphr = osSemaphoreNew(1, 0, NULL);
-
     return 0;
 }
 
-epd_ret_t ewl_impl_reset_cb(void *handle) {
+epd_ret_t epd_impl_reset_cb(void *handle) {
     HAL_GPIO_WritePin(OLED_RST_GPIO_Port, OLED_RST_Pin, GPIO_PIN_SET);
     osDelay(10);
     HAL_GPIO_WritePin(OLED_RST_GPIO_Port, OLED_RST_Pin, GPIO_PIN_RESET);
@@ -24,22 +24,31 @@ epd_ret_t ewl_impl_reset_cb(void *handle) {
     return EPD_OK;
 }
 
-epd_ret_t ewl_impl_write_cmd_cb(void *handle, uint8_t *cmd, uint32_t len) {
+epd_ret_t epd_impl_write_cmd_cb(void *handle, uint8_t *cmd, uint32_t len) {
     HAL_GPIO_WritePin(OLED_DC_GPIO_Port, OLED_DC_Pin, GPIO_PIN_RESET);
-    HAL_StatusTypeDef ret = HAL_SPI_Transmit_DMA(&hspi1, cmd, len);
-    if(ret != HAL_OK) {
-        return EPD_FAIL;
+    HAL_StatusTypeDef ret;
+#if EPD_IMPL_CMD_DC_CHANGE_AT_PARAM
+    ret = HAL_SPI_Transmit(&hspi1, cmd, 0x01, 1000);
+    if (ret != HAL_OK) return EPD_FAIL;
+    if(len > 1) {
+        HAL_GPIO_WritePin(OLED_DC_GPIO_Port, OLED_DC_Pin, GPIO_PIN_SET);
+        ret = HAL_SPI_Transmit_DMA(&hspi1, &cmd[1], len - 1);
+        if(ret != HAL_OK) return EPD_FAIL;
+        osSemaphoreAcquire(s_spi_semphr, osWaitForever);
     }
-
+#else
+    ret = HAL_SPI_Transmit_DMA(&hspi1, cmd, len);
+    if(ret != HAL_OK) return EPD_FAIL;
     osSemaphoreAcquire(s_spi_semphr, osWaitForever);
-
+#endif
+    
     return EPD_OK;
 }
 
-epd_ret_t ewl_impl_write_data_cb(void *handle, uint8_t *data, uint32_t len) {
+epd_ret_t epd_impl_write_data_cb(void *handle, uint8_t *data, uint32_t len) {
     HAL_GPIO_WritePin(OLED_DC_GPIO_Port, OLED_DC_Pin, GPIO_PIN_SET);
     HAL_StatusTypeDef ret = HAL_SPI_Transmit_DMA(&hspi1, data, len);
-    if(ret != HAL_OK) {
+    if (ret != HAL_OK) {
         return EPD_FAIL;
     }
 
@@ -49,7 +58,7 @@ epd_ret_t ewl_impl_write_data_cb(void *handle, uint8_t *data, uint32_t len) {
 }
 
 void HAL_SPI_TxCpltCallback(SPI_HandleTypeDef *hspi) {
-    if(hspi->Instance == SPI1) {
+    if (hspi->Instance == SPI1) {
         osSemaphoreRelease(s_spi_semphr);
     }
 }
\ No newline at end of file
diff --git a/Core/Src/main.c b/Core/Src/main.c
index f9627be..22a4aa7 100644
--- a/Core/Src/main.c
+++ b/Core/Src/main.c
@@ -26,7 +26,8 @@
 
 #include <stdio.h>
 #include <string.h>
-#include "oled_panel_elw1501aa.h"
+#include "epd_impl.h"
+#include "lcd_panel_jlx256128g_920.h"
 
 /* USER CODE END Includes */
 
@@ -407,18 +408,18 @@ static void MX_GPIO_Init(void)
 }
 
 /* USER CODE BEGIN 4 */
-int ewl_impl_init(void);
-epd_ret_t ewl_impl_reset_cb(void *handle);
-epd_ret_t ewl_impl_write_cmd_cb(void *handle, uint8_t *cmd, uint32_t len);
-epd_ret_t ewl_impl_write_data_cb(void *handle, uint8_t *data, uint32_t len);
 
-static oled_ewl1501aa_t s_oled = {
+static lcd_jlx256128g_t s_lcd = {
   .cb = {
-    .reset_cb = ewl_impl_reset_cb,
-    .write_command_cb = ewl_impl_write_cmd_cb,
-    .write_data_cb = ewl_impl_write_data_cb,
+    .reset_cb = epd_impl_reset_cb,
+    .write_command_cb = epd_impl_write_cmd_cb,
+    .write_data_cb = epd_impl_write_data_cb,
   },
   .user_data = NULL,
+  .config = {
+    .contrast = 310,
+    .mode = LCD_JLX256128G_MODE_GS,
+  },
 };
 
 static uint8_t s_frame[8192];
@@ -435,19 +436,15 @@ static uint8_t s_frame[8192];
 void StartDefaultTask(void *argument)
 {
   /* USER CODE BEGIN 5 */
-  ewl_impl_init();
-  oled_ewl1501aa_init(&s_oled);
-  oled_ewl1501aa_power(&s_oled, 1);
+  epd_impl_init();
+  lcd_jlx256128g_init(&s_lcd);
 
-  memset(s_frame, 0xAA, 8192);
-  epd_coord_t coord = {
-    .x_start = 0,
-    .x_end = 63,
-    .y_start = 0,
-    .y_end = 127,
-  };
+  memset(s_frame, 0x00, 256);
+  memset(&s_frame[256], 0x55, 256);
+  memset(&s_frame[512], 0xAA, 256);
+  memset(&s_frame[768], 0xFF, 256);
 
-  oled_ewl1501aa_upload(&s_oled, &coord, s_frame);
+  lcd_jlx256128g_upload(&s_lcd, NULL, s_frame);
 
   osDelay(1000);
 
@@ -457,7 +454,7 @@ void StartDefaultTask(void *argument)
   }
 
   FIL apple_fd;
-  if(f_open(&apple_fd, "0:/apple/apple.bin", FA_READ) != FR_OK) {
+  if(f_open(&apple_fd, "0:/apple/apple_st75256.bin", FA_READ) != FR_OK) {
     printf("Apple not found.\r\n");
     goto dead_loop;
   }
@@ -468,7 +465,7 @@ void StartDefaultTask(void *argument)
     if(f_read(&apple_fd, s_frame, 8192, &br) != FR_OK) {
       printf("Read failed.\r\n");
     }
-    oled_ewl1501aa_upload(&s_oled, NULL, s_frame);
+    lcd_jlx256128g_upload(&s_lcd, NULL, s_frame);
     HAL_GPIO_TogglePin(LED_GPIO_Port, LED_Pin);
     uint32_t frame_end = osKernelGetTickCount();
     if(frame_end - frame_start < 33) {
@@ -478,12 +475,11 @@ void StartDefaultTask(void *argument)
 
 dead_loop:
   osDelay(5000);
-  oled_ewl1501aa_power(&s_oled, 0);
 
   /* Infinite loop */
   for(;;)
   {
-    osDelay(1);
+    osThreadSuspend(defaultTaskHandle);
   }
   /* USER CODE END 5 */
 }
diff --git a/FATFS/Target/ffconf.h b/FATFS/Target/ffconf.h
index ced3043..654180c 100644
--- a/FATFS/Target/ffconf.h
+++ b/FATFS/Target/ffconf.h
@@ -110,7 +110,7 @@
 /   950 - Traditional Chinese (DBCS)
 */
 
-#define _USE_LFN     0    /* 0 to 3 */
+#define _USE_LFN     2    /* 0 to 3 */
 #define _MAX_LFN     255  /* Maximum LFN length to handle (12 to 255) */
 /* The _USE_LFN switches the support of long file name (LFN).
 /
diff --git a/STM32H750VB_APPLE.ioc b/STM32H750VB_APPLE.ioc
index fe57092..de47372 100644
--- a/STM32H750VB_APPLE.ioc
+++ b/STM32H750VB_APPLE.ioc
@@ -51,7 +51,7 @@ FATFS._USE_FASTSEEK=1
 FATFS._USE_FIND=0
 FATFS._USE_FORWARD=0
 FATFS._USE_LABEL=0
-FATFS._USE_LFN=0
+FATFS._USE_LFN=2
 FATFS._USE_MKFS=1
 FATFS._USE_MUTEX=1
 FATFS._USE_STRFUNC=2
diff --git a/lib/epd-spi b/lib/epd-spi
index 3f1f782..3d49780 160000
--- a/lib/epd-spi
+++ b/lib/epd-spi
@@ -1 +1 @@
-Subproject commit 3f1f782faa7453fab6bfb81b777266de21cf5973
+Subproject commit 3d497800bbb4a069a62d989623ab16ce550ab312
diff --git a/pyocd_user.py b/pyocd_user.py
index 16c258f..fe94082 100644
--- a/pyocd_user.py
+++ b/pyocd_user.py
@@ -15,4 +15,5 @@ def will_init_target(target, init_sequence):
         seq.insert_before('find_components',
             ('set_traceclken', set_traceclken)
         )
-    )
\ No newline at end of file
+    )
+