diff --git a/firmware-demo/src/main.cpp b/firmware-demo/src/main.cpp
index b5fa5255..c2e071e2 100644
--- a/firmware-demo/src/main.cpp
+++ b/firmware-demo/src/main.cpp
@@ -14,7 +14,6 @@ extern "C" {
 }
 
 #include <lilka.h>
-#include <lilka/ui/menu.h>
 
 void setup() {
     lilka::begin();
@@ -130,18 +129,58 @@ void roms_menu() {
     }
 }
 
+void sd_browser_menu(String path) {
+    if (!lilka::sdcard.available()) {
+        lilka::ui_alert("Помилка", "SD-карта не знайдена");
+        return;
+    }
+
+    lilka::Entry entries[32];
+    int numEntries = lilka::sdcard.listDir(path, entries);
+
+    if (numEntries == -1) {
+        lilka::ui_alert("Помилка", "Не вдалося прочитати директорію");
+        return;
+    }
+
+    String filenames[32];
+    for (int i = 0; i < numEntries; i++) {
+        filenames[i] = entries[i].name;
+    }
+    filenames[numEntries++] = "<< Назад";
+
+    int cursor = 0;
+    while (1) {
+        cursor = lilka::ui_menu(String("SD: ") + path, filenames, numEntries, cursor);
+        if (cursor == numEntries - 1) {
+            return;
+        }
+        if (entries[cursor].type == lilka::EntryType::DIRECTORY) {
+            sd_browser_menu((path.equals("/") ? "" : path) + "/" + entries[cursor].name);
+        } else {
+            continue;
+        }
+    }
+}
+
 void loop() {
     String menu[] = {
         "Демо",
         "Емулятор NES",
+        "Браузер SD-карти",
+        "Про систему",
     };
     int cursor;
     while (1) {
-        cursor = lilka::ui_menu("Головне меню", menu, 2, cursor);
+        cursor = lilka::ui_menu("Головне меню", menu, 4, cursor);
         if (cursor == 0) {
             demos_menu();
         } else if (cursor == 1) {
             roms_menu();
+        } else if (cursor == 2) {
+            sd_browser_menu("/");
+        } else if (cursor == 3) {
+            lilka::ui_alert("Лілка", "by Андерсон\n& friends");
         }
     }
 }
diff --git a/lib/lilka/src/lilka.cpp b/lib/lilka/src/lilka.cpp
index 5cea978b..778f9e61 100644
--- a/lib/lilka/src/lilka.cpp
+++ b/lib/lilka/src/lilka.cpp
@@ -6,10 +6,10 @@ namespace lilka {
 
 void begin() {
     serial_begin();
-    display.begin();
-    controller.begin();
-    filesystem.begin();
+    display.begin(); // Must be initialized BEFORE SD card
     sdcard.begin();
+    controller.begin(); // Must be initialized AFTER SD card (since SD card somehow messes with GPIO)
+    filesystem.begin();
     esp_wifi_deinit();
 }
 
diff --git a/lib/lilka/src/lilka.h b/lib/lilka/src/lilka.h
index 796d9f08..587ddad3 100644
--- a/lib/lilka/src/lilka.h
+++ b/lib/lilka/src/lilka.h
@@ -6,6 +6,7 @@
 #include "lilka/display.h"
 #include "lilka/filesystem.h"
 #include "lilka/sdcard.h"
+#include "lilka/ui.h"
 
 namespace lilka {
 void begin();
diff --git a/lib/lilka/src/lilka/config.h b/lib/lilka/src/lilka/config.h
index 90b42558..cdc2c560 100644
--- a/lib/lilka/src/lilka/config.h
+++ b/lib/lilka/src/lilka/config.h
@@ -7,23 +7,24 @@
 
 #    define LILKA_GPIO_UP 4
 #    define LILKA_GPIO_DOWN 7
-#    define LILKA_GPIO_LEFT 5
-#    define LILKA_GPIO_RIGHT 6
-#    define LILKA_GPIO_SELECT 9
+#    define LILKA_GPIO_LEFT -1
+#    define LILKA_GPIO_RIGHT -1
+#    define LILKA_GPIO_SELECT -1
 #    define LILKA_GPIO_START 10
-#    define LILKA_GPIO_A 20
+#    define LILKA_GPIO_A -1
 #    define LILKA_GPIO_B -1
 
+#    define LILKA_SPI_SCK 0
+#    define LILKA_SPI_MOSI 1
+#    define LILKA_SPI_MISO 8
 #    define LILKA_DISPLAY_DC 3
 #    define LILKA_DISPLAY_CS 21
-#    define LILKA_DISPLAY_SCK 0
-#    define LILKA_DISPLAY_MOSI 1
 #    define LILKA_DISPLAY_RST 2
 #    define LILKA_DISPLAY_ROTATION 0
 #    define LILKA_DISPLAY_WIDTH 240
 #    define LILKA_DISPLAY_HEIGHT 280
 
-#    define SDCARD_CS -1
+#    define LILKA_SDCARD_CS 20
 
 #elif LILKA_VERSION == 1
 
diff --git a/lib/lilka/src/lilka/controller.cpp b/lib/lilka/src/lilka/controller.cpp
index 17e93260..241cd420 100644
--- a/lib/lilka/src/lilka/controller.cpp
+++ b/lib/lilka/src/lilka/controller.cpp
@@ -26,6 +26,10 @@ void IRAM_ATTR Controller::handle_interrupt(int stateIndex) {
     if (handlers[stateIndex] != NULL) {
         handlers[stateIndex](state->pressed);
     }
+    // Serial.print("Button ");
+    // Serial.print(stateIndex);
+    // Serial.print(" ");
+    // Serial.println(state->pressed ? "pressed" : "released");
     state->time = micros();
 }
 
diff --git a/lib/lilka/src/lilka/display.cpp b/lib/lilka/src/lilka/display.cpp
index acda643a..dd863d94 100644
--- a/lib/lilka/src/lilka/display.cpp
+++ b/lib/lilka/src/lilka/display.cpp
@@ -4,7 +4,7 @@
 
 namespace lilka {
 
-lilka::Display::Display() : Arduino_ST7789(new Arduino_ESP32SPI(LILKA_DISPLAY_DC, LILKA_DISPLAY_CS, LILKA_DISPLAY_SCK, LILKA_DISPLAY_MOSI, -1), LILKA_DISPLAY_RST, LILKA_DISPLAY_ROTATION, true, LILKA_DISPLAY_WIDTH, LILKA_DISPLAY_HEIGHT, 0, 20) {}
+lilka::Display::Display() : Arduino_ST7789(new Arduino_ESP32SPI(LILKA_DISPLAY_DC, LILKA_DISPLAY_CS, LILKA_SPI_SCK, LILKA_SPI_MOSI, LILKA_SPI_MISO), LILKA_DISPLAY_RST, LILKA_DISPLAY_ROTATION, true, LILKA_DISPLAY_WIDTH, LILKA_DISPLAY_HEIGHT, 0, 20) {}
 
 void lilka::Display::begin() {
     Serial.print("Initializing display... ");
diff --git a/lib/lilka/src/lilka/sdcard.cpp b/lib/lilka/src/lilka/sdcard.cpp
index e116bd8c..03fd5a81 100644
--- a/lib/lilka/src/lilka/sdcard.cpp
+++ b/lib/lilka/src/lilka/sdcard.cpp
@@ -8,20 +8,38 @@ SDCard::SDCard() {
 
 void SDCard::begin() {
     Serial.print("Initializing SD card... ");
-#if CONFIG_IDF_TARGET_ESP32S2 || CONFIG_IDF_TARGET_ESP32S3
-    SPIClass spi(HSPI);
-#elif CONFIG_IDF_TARGET_ESP32C3
-    SPIClass spi(FSPI);
-#endif
 
-#if SDCARD_CS < 0
+#if LILKA_SDCARD_CS < 0
     Serial.println("failed: no CS pin");
 #else
-    fs->begin(SDCARD_CS, spi);
-    Serial.println("done");
+    fs->begin(LILKA_SDCARD_CS, SPI, 1000000);
+    Serial.print("done, SD card type: ");
+    switch (fs->cardType()) {
+        case CARD_NONE:
+            Serial.println("None");
+            break;
+        case CARD_SD:
+            Serial.print("SD, ");
+            break;
+        case CARD_SDHC:
+            Serial.print("SDHC, ");
+            break;
+        default:
+            Serial.println("Unknown");
+            break;
+    }
+    if (fs->cardType() == CARD_SD || fs->cardType() == CARD_SDHC) {
+        Serial.print("SD card size: ");
+        Serial.print(fs->totalBytes());
+        Serial.println(" bytes");
+    }
 #endif
 }
 
+bool SDCard::available() {
+    return fs->cardType() == CARD_SD || fs->cardType() == CARD_SDHC;
+}
+
 int SDCard::listDir(String path, Entry entries[]) {
     File root = fs->open(path);
     if (!root) {
@@ -49,6 +67,10 @@ int SDCard::listDir(String path, Entry entries[]) {
         i++;
     }
     root.close();
+    // for (int i = 0; i < 1024; i++) {
+    //     SPI.transfer(0xAA); // http://elm-chan.org/docs/mmc/mmc_e.html#spibus
+    //     // SPI.write(0xAA); // http://elm-chan.org/docs/mmc/mmc_e.html#spibus
+    // }
     return i;
 }
 
diff --git a/lib/lilka/src/lilka/sdcard.h b/lib/lilka/src/lilka/sdcard.h
index d6915d8f..320ff9e7 100644
--- a/lib/lilka/src/lilka/sdcard.h
+++ b/lib/lilka/src/lilka/sdcard.h
@@ -21,6 +21,7 @@ class SDCard {
 public:
     SDCard();
     void begin();
+    bool available();
     SDFS *fs;
 
     int listDir(String path, Entry entries[]);
diff --git a/lib/lilka/src/lilka/ui/menu.cpp b/lib/lilka/src/lilka/ui.cpp
similarity index 61%
rename from lib/lilka/src/lilka/ui/menu.cpp
rename to lib/lilka/src/lilka/ui.cpp
index 28908fde..a1a5e6ea 100644
--- a/lib/lilka/src/lilka/ui/menu.cpp
+++ b/lib/lilka/src/lilka/ui.cpp
@@ -1,4 +1,4 @@
-#include "menu.h"
+#include "ui.h"
 
 #include "lilka/display.h"
 #include "lilka/controller.h"
@@ -7,6 +7,7 @@ namespace lilka {
 
 int ui_menu(String title, String menu[], int menu_size, int cursor) {
     // Arduino_TFT *gfx = lilka_display_get();
+    Serial.println("Clear screen");
     display.fillScreen(display.color565(0, 0, 0));
     while (1) {
         display.setCursor(32, 48);
@@ -57,4 +58,35 @@ int ui_menu(String title, String menu[], int menu_size, int cursor) {
     }
 }
 
+void ui_alert(String title, String message) {
+    int top = LILKA_DISPLAY_HEIGHT / 8;
+    int mid = LILKA_DISPLAY_HEIGHT / 8 * 2;
+    int bottom = LILKA_DISPLAY_HEIGHT / 8 * 7;
+
+    int left = LILKA_DISPLAY_WIDTH / 8;
+    int right = LILKA_DISPLAY_WIDTH / 8 * 7;
+    int width = right - left;
+    int xMargin = 4;
+
+    display.fillRect(left, top, width, mid - top, display.color565(32, 96, 96));
+    display.setFont(u8g2_font_6x13_t_cyrillic);
+    display.setTextSize(2);
+    display.setTextBound(left + xMargin, top, width - xMargin * 2, mid - top);
+    display.setCursor(left + xMargin, top + 13 * 2);
+    display.println(title);
+
+    display.fillRect(left + xMargin, mid, width - xMargin * 2, bottom - mid, display.color565(32, 32, 32));
+    display.setFont(u8g2_font_10x20_t_cyrillic);
+    display.setTextSize(1);
+    display.setTextBound(left + xMargin, top, width - xMargin * 2, bottom - mid);
+    display.setCursor(left, mid + 20);
+    display.println(message);
+    while (controller.state().start) {
+        delay(10);
+    }
+    while (!controller.state().start) {
+        delay(10);
+    }
+}
+
 } // namespace lilka
diff --git a/lib/lilka/src/lilka/ui/menu.h b/lib/lilka/src/lilka/ui.h
similarity index 56%
rename from lib/lilka/src/lilka/ui/menu.h
rename to lib/lilka/src/lilka/ui.h
index 4ce7529f..fed6d327 100644
--- a/lib/lilka/src/lilka/ui/menu.h
+++ b/lib/lilka/src/lilka/ui.h
@@ -1,12 +1,13 @@
-#ifndef LILKA_MENU_H
-#define LILKA_MENU_H
+#ifndef LILKA_UI_H
+#define LILKA_UI_H
 
 #include <Arduino.h>
 
 namespace lilka {
 
 int ui_menu(String title, String menu[], int menu_size, int cursor);
+void ui_alert(String title, String message);
 
 } // namespace lilka
 
-#endif // LILKA_MENU_H
+#endif // LILKA_UI_H