diff --git a/CMakeLists.txt b/CMakeLists.txt
index cf00821..49cd262 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -211,18 +211,10 @@ target_sources(infinisim PUBLIC
   ${InfiniTime_DIR}/src/systemtask/SystemMonitor.cpp
 )
 
-if(EXISTS ${InfiniTime_DIR}/src/displayapp/InfiniTimeTheme.cpp)
-  target_compile_definitions(infinisim PUBLIC INFINITIME_THEME_CPP)
-  target_sources(infinisim PUBLIC
-    ${InfiniTime_DIR}/src/displayapp/InfiniTimeTheme.cpp
-    ${InfiniTime_DIR}/src/displayapp/InfiniTimeTheme.h
+target_sources(infinisim PUBLIC
+  ${InfiniTime_DIR}/src/displayapp/InfiniTimeTheme.cpp
+  ${InfiniTime_DIR}/src/displayapp/InfiniTimeTheme.h
 )
-else()
-  target_sources(infinisim PUBLIC
-    ${InfiniTime_DIR}/src/displayapp/lv_pinetime_theme.h
-    ${InfiniTime_DIR}/src/displayapp/lv_pinetime_theme.c
-  )
-endif()
 
 # littlefs
 add_library(littlefs STATIC
diff --git a/InfiniTime b/InfiniTime
index ce2277c..9bbd2dd 160000
--- a/InfiniTime
+++ b/InfiniTime
@@ -1 +1 @@
-Subproject commit ce2277cbcac0f28b27c1483fba09921f43d590cd
+Subproject commit 9bbd2ddbc4e44742913e35e25b21b80d80efe36b
diff --git a/main.cpp b/main.cpp
index 5b89ef0..d95537f 100644
--- a/main.cpp
+++ b/main.cpp
@@ -21,11 +21,7 @@
 #include "lv_drivers/indev/mousewheel.h"
 
 // get PineTime header
-#if defined(INFINITIME_THEME_CPP)
 #include "displayapp/InfiniTimeTheme.h"
-#else
-#include "displayapp/lv_pinetime_theme.h"
-#endif
 #include <drivers/Hrs3300.h>
 #include <drivers/Bma421.h>
 
@@ -330,8 +326,6 @@ Pinetime::Drivers::Cst816S touchPanel; // {twiMaster, touchPanelTwiAddress};
 //  #include "displayapp/LittleVgl.h"
 //  #include "displayapp/DisplayApp.h"
 //#endif
-Pinetime::Components::LittleVgl lvgl {lcd};
-
 Pinetime::Drivers::Bma421 motionSensor {twiMaster, motionSensorTwiAddress};
 Pinetime::Drivers::Hrs3300 heartRateSensor {twiMaster, heartRateSensorTwiAddress};
 
@@ -347,6 +341,8 @@ Pinetime::Controllers::FS fs {spiNorFlash};
 Pinetime::Controllers::Settings settingsController {fs};
 Pinetime::Controllers::MotorController motorController {};
 
+Pinetime::Components::LittleVgl lvgl {lcd, fs};
+
 Pinetime::Controllers::DateTime dateTimeController {settingsController};
 Pinetime::Drivers::Watchdog watchdog;
 Pinetime::Controllers::NotificationManager notificationManager;
diff --git a/sim/displayapp/LittleVgl.cpp b/sim/displayapp/LittleVgl.cpp
index 1e8c1a6..04a7482 100644
--- a/sim/displayapp/LittleVgl.cpp
+++ b/sim/displayapp/LittleVgl.cpp
@@ -1,20 +1,17 @@
 #include "displayapp/LittleVgl.h"
-#if defined(INFINITIME_THEME_CPP)
 #include "displayapp/InfiniTimeTheme.h"
-#else
-#include "displayapp/lv_pinetime_theme.h"
-#endif
 
 #include <FreeRTOS.h>
 #include <task.h>
 #include <timers.h>
-////#include <projdefs.h>
-#include "drivers/Cst816s.h"
 #include "drivers/St7789.h"
+#include "littlefs/lfs.h"
+#include "components/fs/FS.h"
 
 // lv-sim monitor display driver for monitor_flush() function
 #include "lv_drivers/display/monitor.h"
 
+#include <SDL2/SDL.h>
 #include <array>
 
 using namespace Pinetime::Components;
@@ -24,8 +21,44 @@ namespace {
     lv_theme_t* theme = lv_pinetime_theme_init();
     lv_theme_set_act(theme);
   }
+
+  lv_fs_res_t lvglOpen(lv_fs_drv_t* drv, void* file_p, const char* path, lv_fs_mode_t /*mode*/) {
+    lfs_file_t* file = static_cast<lfs_file_t*>(file_p);
+    Pinetime::Controllers::FS* filesys = static_cast<Pinetime::Controllers::FS*>(drv->user_data);
+    int res = filesys->FileOpen(file, path, LFS_O_RDONLY);
+    if (res == 0) {
+      if (file->type == 0) {
+        return LV_FS_RES_FS_ERR;
+      } else {
+        return LV_FS_RES_OK;
+      }
+    }
+    return LV_FS_RES_NOT_EX;
+  }
+
+  lv_fs_res_t lvglClose(lv_fs_drv_t* drv, void* file_p) {
+    Pinetime::Controllers::FS* filesys = static_cast<Pinetime::Controllers::FS*>(drv->user_data);
+    lfs_file_t* file = static_cast<lfs_file_t*>(file_p);
+    filesys->FileClose(file);
+
+    return LV_FS_RES_OK;
+  }
+
+  lv_fs_res_t lvglRead(lv_fs_drv_t* drv, void* file_p, void* buf, uint32_t btr, uint32_t* br) {
+    Pinetime::Controllers::FS* filesys = static_cast<Pinetime::Controllers::FS*>(drv->user_data);
+    lfs_file_t* file = static_cast<lfs_file_t*>(file_p);
+    filesys->FileRead(file, static_cast<uint8_t*>(buf), btr);
+    *br = btr;
+    return LV_FS_RES_OK;
+  }
+
+  lv_fs_res_t lvglSeek(lv_fs_drv_t* drv, void* file_p, uint32_t pos) {
+    Pinetime::Controllers::FS* filesys = static_cast<Pinetime::Controllers::FS*>(drv->user_data);
+    lfs_file_t* file = static_cast<lfs_file_t*>(file_p);
+    filesys->FileSeek(file, pos);
+    return LV_FS_RES_OK;
+  }
 }
-lv_style_t* LabelBigStyle = nullptr;
 
 static void disp_flush(lv_disp_drv_t* disp_drv, const lv_area_t* area, lv_color_t* color_p) {
   auto* lvgl = static_cast<LittleVgl*>(disp_drv->user_data);
@@ -47,7 +80,7 @@ bool touchpad_read(lv_indev_drv_t* indev_drv, lv_indev_data_t* data) {
   return lvgl->GetTouchPadInfo(data);
 }
 
-LittleVgl::LittleVgl(Pinetime::Drivers::St7789& lcd) : lcd {lcd} {
+LittleVgl::LittleVgl(Pinetime::Drivers::St7789& lcd, Pinetime::Controllers::FS& filesystem) : lcd {lcd}, filesystem {filesystem} {
 }
 
 void LittleVgl::Init() {
@@ -55,6 +88,7 @@ void LittleVgl::Init() {
   InitTheme();
   InitDisplay();
   InitTouchpad();
+  InitFileSystem();
 }
 
 void LittleVgl::InitDisplay() {
@@ -88,6 +122,22 @@ void LittleVgl::InitTouchpad() {
   lv_indev_drv_register(&indev_drv);
 }
 
+void LittleVgl::InitFileSystem() {
+  lv_fs_drv_t fs_drv;
+  lv_fs_drv_init(&fs_drv);
+
+  fs_drv.file_size = sizeof(lfs_file_t);
+  fs_drv.letter = 'F';
+  fs_drv.open_cb = lvglOpen;
+  fs_drv.close_cb = lvglClose;
+  fs_drv.read_cb = lvglRead;
+  fs_drv.seek_cb = lvglSeek;
+
+  fs_drv.user_data = &filesystem;
+
+  lv_fs_drv_register(&fs_drv);
+}
+
 void LittleVgl::SetFullRefresh(FullRefreshDirections direction) {
   if (scrollDirection == FullRefreshDirections::None) {
     scrollDirection = direction;
@@ -204,7 +254,6 @@ void LittleVgl::FlushDisplay(const lv_area_t* area, lv_color_t* color_p) {
         scrollOffset = (totalNbLines) -toScroll;
       }
       lcd.VerticalScrollStartAddress(scrollOffset);
-
     }
     // move the whole screen down and draw the new screen at the top of the display
     MoveScreen(&disp_drv, static_cast<int16_t>(height));
@@ -298,7 +347,6 @@ void LittleVgl::CancelTap() {
   }
 }
 
-
 bool LittleVgl::GetTouchPadInfo(lv_indev_data_t* ptr) {
   ptr->point.x = touchPoint.x;
   ptr->point.y = touchPoint.y;
diff --git a/sim/displayapp/LittleVgl.h b/sim/displayapp/LittleVgl.h
index 38f1f00..9a15ae1 100644
--- a/sim/displayapp/LittleVgl.h
+++ b/sim/displayapp/LittleVgl.h
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <lvgl/lvgl.h>
+#include <components/fs/FS.h>
 
 namespace Pinetime {
   namespace Drivers {
@@ -11,7 +12,7 @@ namespace Pinetime {
     class LittleVgl {
     public:
       enum class FullRefreshDirections { None, Up, Down, Left, Right, LeftAnim, RightAnim };
-      LittleVgl(Pinetime::Drivers::St7789& lcd);
+      LittleVgl(Pinetime::Drivers::St7789& lcd, Pinetime::Controllers::FS& filesystem);
 
       LittleVgl(const LittleVgl&) = delete;
       LittleVgl& operator=(const LittleVgl&) = delete;
@@ -37,8 +38,10 @@ namespace Pinetime {
     private:
       void InitDisplay();
       void InitTouchpad();
+      void InitFileSystem();
 
       Pinetime::Drivers::St7789& lcd;
+      Pinetime::Controllers::FS& filesystem;
 
       lv_disp_buf_t disp_buf_2;
       lv_color_t buf2_1[LV_HOR_RES_MAX * 4];