diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
index bbb07a6..f0a694e 100644
--- a/main/CMakeLists.txt
+++ b/main/CMakeLists.txt
@@ -20,6 +20,8 @@ idf_component_register(
          "menus/wifi.c"
          "uninstall.c"
          "file_browser.c"
+         "test_common.c"
+         "factory_test.c"
     INCLUDE_DIRS "."
                  "include"
                  "menus"
diff --git a/main/appfs_wrapper.c b/main/appfs_wrapper.c
index abcd0d5..c4c022d 100644
--- a/main/appfs_wrapper.c
+++ b/main/appfs_wrapper.c
@@ -72,15 +72,24 @@ void appfs_store_app(pax_buf_t* pax_buffer, ILI9341* ili9341, char* path, char*
 
     res = appfsCreateFile(label, app_size, &handle);
     if (res != ESP_OK) {
-        display_boot_screen(pax_buffer, ili9341, "Failed to create on AppFS");
+        display_boot_screen(pax_buffer, ili9341, "Failed to create file");
         ESP_LOGE(TAG, "Failed to create file on AppFS (%d)", res);
         vTaskDelay(100 / portTICK_PERIOD_MS);
         free(app);
         return;
     }
+    int roundedSize=(app_size+(SPI_FLASH_MMU_PAGE_SIZE-1))&(~(SPI_FLASH_MMU_PAGE_SIZE-1));
+    res = appfsErase(handle, 0, roundedSize);
+    if (res != ESP_OK) {
+        display_boot_screen(pax_buffer, ili9341, "Failed to erase file");
+        ESP_LOGE(TAG, "Failed to erase file on AppFS (%d)", res);
+        vTaskDelay(100 / portTICK_PERIOD_MS);
+        free(app);
+        return;
+    }
     res = appfsWrite(handle, 0, app, app_size);
     if (res != ESP_OK) {
-        display_boot_screen(pax_buffer, ili9341, "Failed to write to AppFS");
+        display_boot_screen(pax_buffer, ili9341, "Failed to write file");
         ESP_LOGE(TAG, "Failed to write to file on AppFS (%d)", res);
         vTaskDelay(100 / portTICK_PERIOD_MS);
         free(app);
diff --git a/main/factory_test.c b/main/factory_test.c
new file mode 100644
index 0000000..ad286be
--- /dev/null
+++ b/main/factory_test.c
@@ -0,0 +1,174 @@
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <esp_log.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/queue.h>
+#include <driver/gpio.h>
+#include "hardware.h"
+#include "ili9341.h"
+#include "ice40.h"
+#include "rp2040.h"
+#include "fpga_test.h"
+#include "pax_gfx.h"
+#include "test_common.h"
+#include "settings.h"
+#include "ws2812.h"
+#include "audio.h"
+
+static const char *TAG = "factory";
+
+/* Test routines */
+
+bool test_rp2040_init(uint32_t* rc) {
+    esp_err_t res = bsp_rp2040_init();
+    *rc = (uint32_t) res;
+    return (res == ESP_OK);
+}
+
+bool test_ice40_init(uint32_t* rc) {
+    esp_err_t res = bsp_ice40_init();
+    *rc = (uint32_t) res;
+    return (res == ESP_OK);
+}
+
+bool test_bno055_init(uint32_t* rc) {
+    esp_err_t res = bsp_bno055_init();
+    *rc = (uint32_t) res;
+    return (res == ESP_OK);
+}
+
+bool test_bme680_init(uint32_t* rc) {
+    esp_err_t res = bsp_bme680_init();
+    *rc = (uint32_t) res;
+    return (res == ESP_OK);
+}
+
+bool test_stuck_buttons(uint32_t* rc) {
+    RP2040* rp2040 = get_rp2040();
+    uint16_t state;
+    esp_err_t res = rp2040_read_buttons(rp2040, &state);
+    if (res != ESP_OK) {
+        *rc = 0xFFFFFFFF;
+        return false;
+    }
+
+    state &= ~(1 << RP2040_INPUT_FPGA_CDONE); // Ignore FPGA CDONE
+
+    *rc = state;
+
+    return (state == 0x0000);
+}
+
+bool test_sd_power(uint32_t* rc) {
+    *rc = 0x00000000;
+    // Init all GPIO pins for SD card and LED
+    if (gpio_reset_pin(GPIO_SD_PWR) != ESP_OK) return false;
+    if (gpio_set_direction(GPIO_SD_PWR, GPIO_MODE_INPUT) != ESP_OK) return false;
+    if (gpio_reset_pin(GPIO_SD_CMD) != ESP_OK) return false;
+    if (gpio_set_direction(GPIO_SD_CMD, GPIO_MODE_INPUT) != ESP_OK) return false;
+    if (gpio_reset_pin(GPIO_SD_CLK) != ESP_OK) return false;
+    if (gpio_set_direction(GPIO_SD_CLK, GPIO_MODE_INPUT) != ESP_OK) return false;
+    if (gpio_reset_pin(GPIO_SD_D0) != ESP_OK) return false;
+    if (gpio_set_direction(GPIO_SD_D0, GPIO_MODE_INPUT) != ESP_OK) return false;
+    if (gpio_reset_pin(GPIO_LED_DATA) != ESP_OK) return false;
+    if (gpio_set_direction(GPIO_LED_DATA, GPIO_MODE_INPUT) != ESP_OK) return false;
+
+    if (gpio_get_level(GPIO_SD_PWR)) {*rc = 0x01; return false;} // Check that power enable is pulled low
+
+    if (gpio_set_direction(GPIO_SD_PWR, GPIO_MODE_OUTPUT) != ESP_OK) return false;
+    if (gpio_set_level(GPIO_SD_PWR, 1) != ESP_OK) return false;
+    
+    vTaskDelay(10 / portTICK_PERIOD_MS);
+
+    // SD pins should be pulled high
+    if (!gpio_get_level(GPIO_SD_CMD)) {*rc = 0x02; return false;}
+    if (!gpio_get_level(GPIO_SD_CLK)) {*rc = 0x04; return false;}
+    if (!gpio_get_level(GPIO_SD_D0)) {*rc = 0x08; return false;}
+
+    return true;
+}
+
+bool run_basic_tests(pax_buf_t* pax_buffer, ILI9341* ili9341) {
+    const pax_font_t *font;
+    int line = 0;
+    bool ok = true;
+
+    /* Screen init */
+    font = pax_get_font("sky mono");
+
+    pax_noclip(pax_buffer);
+    pax_background(pax_buffer, 0x8060f0);
+    ili9341_write(ili9341, pax_buffer->buf);
+
+    /* Run mandatory tests */
+    RUN_TEST_MANDATORY("RP2040", test_rp2040_init);
+    RUN_TEST_MANDATORY("ICE40",  test_ice40_init);
+    RUN_TEST_MANDATORY("BNO055", test_bno055_init);
+    RUN_TEST_MANDATORY("BME680", test_bme680_init);
+    RUN_TEST_MANDATORY("STUCK BUTTONS", test_stuck_buttons);
+    RUN_TEST_MANDATORY("SD/LED POWER", test_sd_power);
+    
+
+error:
+    /* Fail result on screen */
+    if (!ok) pax_draw_text(pax_buffer, 0xffff0000, font, 36, 0, 20*line, "FAIL");
+    ili9341_write(ili9341, pax_buffer->buf);
+    return ok;
+}
+
+const uint8_t led_green[15] = {50, 0, 0, 50, 0, 0, 50, 0, 0, 50, 0, 0, 50, 0, 0};
+const uint8_t led_red[15] = {0, 50, 0, 0, 50, 0, 0, 50, 0, 0, 50, 0, 0, 50, 0};
+const uint8_t led_blue[15] = {0, 0, 50, 0, 0, 50, 0, 0, 50, 0, 0, 50, 0, 0, 50};
+
+void factory_test(pax_buf_t* pax_buffer, ILI9341* ili9341) {
+    uint8_t factory_test_done = nvs_get_u8_default("system", "factory_test", 0);
+    if (!factory_test_done) {
+        bool result;
+        
+        ESP_LOGI(TAG, "Factory test start");
+        
+        result = run_basic_tests(pax_buffer, ili9341);
+        
+        gpio_set_direction(GPIO_SD_PWR, GPIO_MODE_OUTPUT);
+        gpio_set_level(GPIO_SD_PWR, 1);
+        ws2812_init(GPIO_LED_DATA);
+        if (result) {
+            ws2812_send_data(led_blue, sizeof(led_blue));
+        } else {
+            ws2812_send_data(led_red, sizeof(led_red));
+        }
+        
+        if (!result) goto test_end;
+
+        RP2040* rp2040 = get_rp2040();
+        
+        result = run_fpga_tests(rp2040->queue, pax_buffer, ili9341);
+        if (!result) {
+            ws2812_send_data(led_red, sizeof(led_red));
+            goto test_end;
+        }
+        
+        ws2812_send_data(led_green, sizeof(led_green));
+        
+        // Wait for the operator to unplug the badge
+        test_end:
+        
+        if (result) {
+            esp_err_t res = nvs_set_u8_fixed("system", "factory_test", 1);
+            if (res != ESP_OK) {
+                ESP_LOGE(TAG, "Failed to store test result %d\n", res);
+                result = false;
+                ws2812_send_data(led_red, sizeof(led_red));
+                pax_noclip(pax_buffer);
+                pax_background(pax_buffer, 0xa85a32);
+                ili9341_write(ili9341, pax_buffer->buf);
+            }
+        }
+        
+        while (true) {
+            if (result) play_bootsound();
+            vTaskDelay(3000 / portTICK_PERIOD_MS);
+        }
+    }
+}
diff --git a/main/file_browser.c b/main/file_browser.c
index 0a5cf91..2a931a0 100644
--- a/main/file_browser.c
+++ b/main/file_browser.c
@@ -15,6 +15,7 @@
 #include "menu.h"
 #include "rp2040.h"
 #include "appfs_wrapper.h"
+#include "bootscreen.h"
 
 static const char *TAG = "file browser";
 
@@ -104,20 +105,24 @@ void find_parent_dir(char* path, char* parent) {
 }
 
 void file_browser(xQueueHandle buttonQueue, pax_buf_t* pax_buffer, ILI9341* ili9341, const char* initial_path) {
+    display_boot_screen(pax_buffer, ili9341, "Please wait...");
     char path[512] = {0};
     strncpy(path, initial_path, sizeof(path));
     while (true) {
         menu_t* menu = menu_alloc(path);
         DIR* dir = opendir(path);
         if (dir == NULL) {
-            ESP_LOGE(TAG, "Failed to open directory %s", path);
+            if (path[0] != 0) {
+                ESP_LOGE(TAG, "Failed to open directory %s", path);
+                display_boot_screen(pax_buffer, ili9341, "Failed to open directory");
+                vTaskDelay(200 / portTICK_PERIOD_MS);
+            }
             return;
         }
         struct dirent *ent;
         file_browser_menu_args_t* pd_args = malloc(sizeof(file_browser_menu_args_t));
         pd_args->type = 'd';
         find_parent_dir(path, pd_args->path);
-        printf("Parent dir: %s\n", pd_args->path);
         menu_insert_item(menu, "../", NULL, pd_args, -1);
 
         while ((ent = readdir(dir)) != NULL) {
@@ -134,8 +139,6 @@ void file_browser(xQueueHandle buttonQueue, pax_buf_t* pax_buffer, ILI9341* ili9
                 args->type = 'd';
             }
 
-            printf("%c %s %s\r\n", args->type, ent->d_name, args->path);
-
             snprintf(args->label, sizeof(args->label), "%s%s", ent->d_name, (args->type == 'd') ? "/" : "");
             menu_insert_item(menu, args->label, NULL, args, -1);
         }
@@ -186,7 +189,8 @@ void file_browser(xQueueHandle buttonQueue, pax_buf_t* pax_buffer, ILI9341* ili9
             if (renderbg) {
                 pax_background(pax_buffer, 0xFFFFFF);
                 pax_noclip(pax_buffer);
-                pax_draw_text(pax_buffer, 0xFF000000, NULL, 18, 5, 240 - 19, "[A] install  [B] back");
+                const pax_font_t *font = pax_get_font("saira regular");
+                pax_draw_text(pax_buffer, 0xFF000000, font, 18, 5, 240 - 19, "[A] install  [B] back");
                 renderbg = false;
             }
 
diff --git a/main/fpga_test.c b/main/fpga_test.c
index a621c76..8808cc3 100644
--- a/main/fpga_test.c
+++ b/main/fpga_test.c
@@ -11,6 +11,7 @@
 #include "rp2040.h"
 #include "fpga_test.h"
 #include "pax_gfx.h"
+#include "test_common.h"
 
 extern const uint8_t fpga_selftest_bin_start[] asm("_binary_fpga_selftest_bin_start");
 extern const uint8_t fpga_selftest_bin_end[] asm("_binary_fpga_selftest_bin_end");
@@ -114,7 +115,8 @@ static bool soc_message(ICE40* ice40, uint8_t cmd, uint32_t param, uint32_t *res
 
 /* Test routines */
 
-static bool test_bitstream_load(ICE40* ice40, uint32_t *rc) {
+static bool test_bitstream_load(uint32_t *rc) {
+    ICE40* ice40 = get_ice40();
     esp_err_t res;
 
     res = ice40_load_bitstream(ice40, fpga_selftest_bin_start, fpga_selftest_bin_end - fpga_selftest_bin_start);
@@ -127,7 +129,7 @@ static bool test_bitstream_load(ICE40* ice40, uint32_t *rc) {
     return true;
 }
 
-static bool test_spi_loopback_one(ICE40* ice40) {
+static bool _test_spi_loopback_one(ICE40* ice40) {
     esp_err_t res;
     uint8_t data_tx[257];
     uint8_t data_rx[258];
@@ -219,12 +221,14 @@ static bool test_spi_loopback_one(ICE40* ice40) {
     return true;
 }
 
-static bool test_spi_loopback(ICE40* ice40, uint32_t *rc) {
+static bool test_spi_loopback(uint32_t *rc) {
     int i;
+    
+    ICE40* ice40 = get_ice40();
 
     /* Run test 256 times */
     for (i=0; i<256; i++) {
-        if (!test_spi_loopback_one(ice40))
+        if (!_test_spi_loopback_one(ice40))
             break;
     }
 
@@ -239,7 +243,9 @@ static bool test_spi_loopback(ICE40* ice40, uint32_t *rc) {
     return true;
 }
 
-static bool test_soc_loopback(ICE40 *ice40, uint32_t *rc) {
+static bool test_soc_loopback(uint32_t *rc) {
+    ICE40* ice40 = get_ice40();
+
     /* Execute command */
     if (!soc_message(ice40, SOC_CMD_PING, SOC_CMD_PING_PARAM, rc, 0)) {
         *rc = -1;
@@ -255,7 +261,9 @@ static bool test_soc_loopback(ICE40 *ice40, uint32_t *rc) {
     return true;
 }
 
-static bool test_uart_loopback(ICE40* ice40, uint32_t *rc) {
+static bool test_uart_loopback(uint32_t *rc) {
+    ICE40* ice40 = get_ice40();
+
     /* Enable loopback mode of RP2040 */
     rp2040_set_fpga_loopback(get_rp2040(), true, true);
     vTaskDelay(pdMS_TO_TICKS(10));
@@ -273,7 +281,9 @@ static bool test_uart_loopback(ICE40* ice40, uint32_t *rc) {
     return *rc == SOC_RESP_OK;
 }
 
-static bool test_psram(ICE40* ice40, uint32_t *rc) {
+static bool test_psram(uint32_t *rc) {
+    ICE40* ice40 = get_ice40();
+
     /* Execute command */
     if (!soc_message(ice40, SOC_CMD_PSRAM_TEST, 0, rc, pdMS_TO_TICKS(1000))) {
         *rc = -1;
@@ -284,7 +294,9 @@ static bool test_psram(ICE40* ice40, uint32_t *rc) {
     return *rc == SOC_RESP_OK;
 }
 
-static bool test_irq_n(ICE40* ice40, uint32_t *rc) {
+static bool test_irq_n(uint32_t *rc) {
+    ICE40* ice40 = get_ice40();
+
     esp_err_t res;
 
     /* Set pin as input */
@@ -327,7 +339,8 @@ static bool test_irq_n(ICE40* ice40, uint32_t *rc) {
     return true;
 }
 
-static bool test_lcd_mode(ICE40* ice40, uint32_t *rc) {
+static bool test_lcd_mode(uint32_t *rc) {
+    ICE40* ice40 = get_ice40();
     esp_err_t res;
     bool ok;
 
@@ -371,7 +384,8 @@ static bool test_lcd_mode(ICE40* ice40, uint32_t *rc) {
     return ok;
 }
 
-static bool test_pmod_open(ICE40* ice40, uint32_t *rc) {
+static bool test_pmod_open(uint32_t *rc) {
+    ICE40* ice40 = get_ice40();
     /* Execute command */
     if (!soc_message(ice40, SOC_CMD_PMOD_OPEN_TEST, 0, rc, 0)) {
         *rc = -1;
@@ -382,7 +396,9 @@ static bool test_pmod_open(ICE40* ice40, uint32_t *rc) {
     return *rc == SOC_RESP_OK;
 }
 
-static bool test_pmod_plug(ICE40* ice40, uint32_t *rc) {
+static bool test_pmod_plug(uint32_t *rc) {
+    ICE40* ice40 = get_ice40();
+
     /* Execute command */
     if (!soc_message(ice40, SOC_CMD_PMOD_PLUG_TEST, 0, rc, 0)) {
         *rc = -1;
@@ -393,7 +409,9 @@ static bool test_pmod_plug(ICE40* ice40, uint32_t *rc) {
     return *rc == SOC_RESP_OK;
 }
 
-static bool test_lcd_init(ICE40* ice40, uint32_t *rc) {
+static bool test_lcd_init(uint32_t *rc) {
+    ICE40* ice40 = get_ice40();
+
     /* Execute command */
     if (!soc_message(ice40, SOC_CMD_LCD_INIT_TEST, 0, rc, 0)) {
         *rc = -1;
@@ -404,83 +422,8 @@ static bool test_lcd_init(ICE40* ice40, uint32_t *rc) {
     return *rc == SOC_RESP_OK;
 }
 
-
-typedef bool (*test_fn)(ICE40 *ice40, uint32_t *rc);
-
-
-static bool wait_button(xQueueHandle buttonQueue) {
-    rp2040_input_message_t buttonMessage = {0};
-
-    while (1) {
-        if (xQueueReceive(buttonQueue, &buttonMessage, 0) == pdTRUE) {
-            if (buttonMessage.state) {
-                switch(buttonMessage.input) {
-                    case RP2040_INPUT_BUTTON_HOME:
-                    case RP2040_INPUT_BUTTON_MENU:
-                    case RP2040_INPUT_BUTTON_BACK:
-                        return false;
-                    case RP2040_INPUT_BUTTON_ACCEPT:
-                        return true;
-                    default:
-                        break;
-                }
-            }
-        } else {
-            vTaskDelay(pdMS_TO_TICKS(10));
-        }
-    }
-}
-
-static bool run_test(ICE40* ice40, pax_buf_t* pax_buffer, const pax_font_t *font, ILI9341* ili9341, int line,
-         const char *test_name, test_fn fn) {
-    bool rv;
-    uint32_t rc;
-
-    /* Test name */
-    pax_draw_text(pax_buffer, 0xffffffff, font, 18, 0, 20*line, test_name);
-    if (ili9341)
-        ili9341_write(ili9341, pax_buffer->buf);
-
-    /* Run the test */
-    rv = fn(ice40, &rc);
-
-    /* Display result */
-    if (!rv) {
-        /* Error */
-        char buf[10];
-        snprintf(buf, sizeof(buf), "%08x", rc);
-        pax_draw_text(pax_buffer, 0xffff0000, font, 18, 200, 20*line, buf);
-    } else {
-        /* OK ! */
-        pax_draw_text(pax_buffer, 0xff00ff00, font, 18, 200, 20*line, "      OK");
-    }
-
-    if (ili9341)
-        ili9341_write(ili9341, pax_buffer->buf);
-
-    /* Pass through the 'OK' status */
-    return rv;
-}
-
-#define RUN_TEST(name, fn) do {\
-    ok &= run_test(ice40, pax_buffer, font, ili9341, line++, name, fn); \
-} while (0)
-
-#define RUN_TEST_MANDATORY(name, fn) do {\
-    if (!run_test(ice40, pax_buffer, font, ili9341, line++, name, fn)) { \
-        pax_draw_text(pax_buffer, 0xffff0000, font, 18, 0, 20*line, "Aborted"); \
-        ili9341_write(ili9341, pax_buffer->buf); \
-        ok = false; \
-        goto error; \
-    } \
-} while (0)
-
-#define RUN_TEST_BLIND(name, fn) do {\
-    ok &= run_test(ice40, pax_buffer, font, NULL, line++, name, fn); \
-} while (0)
-
-
-bool run_fpga_tests(xQueueHandle buttonQueue, ICE40* ice40, pax_buf_t* pax_buffer, ILI9341* ili9341) {
+bool run_fpga_tests(xQueueHandle buttonQueue, pax_buf_t* pax_buffer, ILI9341* ili9341) {
+    ICE40* ice40 = get_ice40();
     const pax_font_t *font;
     int line = 0;
     bool ok = true;
@@ -534,9 +477,7 @@ bool run_fpga_tests(xQueueHandle buttonQueue, ICE40* ice40, pax_buf_t* pax_buffe
     soc_message(ice40, SOC_CMD_LCD_RGB_CYCLE_SET, 1, NULL, 0);
 
     /* Wait for button */
-    if (!wait_button(buttonQueue)) {
-        ok = false;
-    }
+    RUN_TEST("LCD control", test_wait_for_response);
 
     /* Stop LCD / RGB cycling */
     soc_message(ice40, SOC_CMD_LCD_RGB_CYCLE_SET, 0, NULL, 0);
@@ -550,9 +491,9 @@ error:
 
     /* Pass / Fail result on screen */
     if (ok)
-        pax_draw_text(pax_buffer, 0xff00ff00, font, 36, 0, 20*line, "FPGA PASS");
+        pax_draw_text(pax_buffer, 0xff00ff00, font, 36, 0, 20*line, "PASS");
     else
-        pax_draw_text(pax_buffer, 0xffff0000, font, 36, 0, 20*line, "FPGA FAIL");
+        pax_draw_text(pax_buffer, 0xffff0000, font, 36, 0, 20*line, "FAIL");
 
     ili9341_write(ili9341, pax_buffer->buf);
 
@@ -562,7 +503,7 @@ error:
     return ok;
 }
 
-void fpga_test(xQueueHandle buttonQueue, ICE40* ice40, pax_buf_t* pax_buffer, ILI9341* ili9341) {
-    run_fpga_tests(buttonQueue, ice40, pax_buffer, ili9341);
-    wait_button(buttonQueue);
+void fpga_test(xQueueHandle buttonQueue, pax_buf_t* pax_buffer, ILI9341* ili9341) {
+    run_fpga_tests(buttonQueue, pax_buffer, ili9341);
+    test_wait_for_response(NULL);
 }
diff --git a/main/include/factory_test.h b/main/include/factory_test.h
new file mode 100644
index 0000000..5a33254
--- /dev/null
+++ b/main/include/factory_test.h
@@ -0,0 +1,10 @@
+#pragma once
+
+#include <sdkconfig.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/task.h>
+#include <freertos/queue.h>
+#include "ili9341.h"
+#include "pax_gfx.h"
+
+void factory_test(pax_buf_t* pax_buffer, ILI9341* ili9341);
diff --git a/main/include/fpga_test.h b/main/include/fpga_test.h
index 62f9e15..d49c36e 100644
--- a/main/include/fpga_test.h
+++ b/main/include/fpga_test.h
@@ -10,4 +10,5 @@
 #include "ice40.h"
 #include "pax_gfx.h"
 
-void fpga_test(xQueueHandle buttonQueue, ICE40* ice40, pax_buf_t* pax_buffer, ILI9341* ili9341);
+void fpga_test(xQueueHandle buttonQueue, pax_buf_t* pax_buffer, ILI9341* ili9341);
+bool run_fpga_tests(xQueueHandle buttonQueue, pax_buf_t* pax_buffer, ILI9341* ili9341);
diff --git a/main/include/settings.h b/main/include/settings.h
index f032a23..7581831 100644
--- a/main/include/settings.h
+++ b/main/include/settings.h
@@ -6,3 +6,6 @@
 #include "ice40.h"
 
 esp_err_t nvs_init();
+esp_err_t nvs_get_str_fixed(const char* nvs_namespace, const char* key, char* target, size_t target_size, size_t* size);
+uint8_t nvs_get_u8_default(const char* nvs_namespace, const char* key, uint8_t default_value);
+esp_err_t nvs_set_u8_fixed(const char* nvs_namespace, const char* key, uint8_t value);
diff --git a/main/include/test_common.h b/main/include/test_common.h
new file mode 100644
index 0000000..a679df6
--- /dev/null
+++ b/main/include/test_common.h
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <stdio.h>
+#include <string.h>
+#include "ili9341.h"
+#include "pax_gfx.h"
+
+typedef bool (*test_fn)(uint32_t *rc);
+
+bool test_wait_for_response(uint32_t *rc);
+bool run_test(pax_buf_t* pax_buffer, const pax_font_t *font, ILI9341* ili9341, int line, const char *test_name, test_fn fn);
+
+#define RUN_TEST(name, fn) do {\
+    ok &= run_test(pax_buffer, font, ili9341, line++, name, fn); \
+} while (0)
+
+#define RUN_TEST_MANDATORY(name, fn) do {\
+    if (!run_test(pax_buffer, font, ili9341, line++, name, fn)) { \
+        pax_draw_text(pax_buffer, 0xffff0000, font, 18, 0, 20*line, "Aborted"); \
+        ili9341_write(ili9341, pax_buffer->buf); \
+        ok = false; \
+        goto error; \
+    } \
+} while (0)
+
+#define RUN_TEST_BLIND(name, fn) do {\
+    ok &= run_test(pax_buffer, font, NULL, line++, name, fn); \
+} while (0)
diff --git a/main/main.c b/main/main.c
index 1b5f8a3..872d032 100644
--- a/main/main.c
+++ b/main/main.c
@@ -48,6 +48,8 @@
 
 #include "menus/start.h"
 
+#include "factory_test.h"
+
 extern const uint8_t wallpaper_png_start[] asm("_binary_wallpaper_png_start");
 extern const uint8_t wallpaper_png_end[] asm("_binary_wallpaper_png_end");
 
@@ -102,9 +104,19 @@ void app_main(void) {
         esp_restart();
     }
     
-    display_boot_screen(pax_buffer, ili9341, "Starting...");
+    /* Start NVS */
+    res = nvs_init();
+    if (res != ESP_OK) {
+        ESP_LOGE(TAG, "NVS init failed: %d", res);
+        display_fatal_error(pax_buffer, ili9341, "Failed to initialize", "NVS failed to initialize", "Flash may be corrupted", NULL);
+        esp_restart();
+    }
     
     audio_init();
+    
+    factory_test(pax_buffer, ili9341);
+    
+    display_boot_screen(pax_buffer, ili9341, "Starting...");
 
     if (bsp_rp2040_init() != ESP_OK) {
         ESP_LOGE(TAG, "Failed to initialize the RP2040 co-processor");
@@ -178,16 +190,6 @@ void app_main(void) {
         display_fatal_error(pax_buffer, ili9341, "Failed to initialize", "AppFS failed to initialize", "Flash may be corrupted", NULL);
         esp_restart();
     }
-    
-    //display_boot_screen(pax_buffer, ili9341, "Initializing NVS...");
-
-    /* Start NVS */
-    res = nvs_init();
-    if (res != ESP_OK) {
-        ESP_LOGE(TAG, "NVS init failed: %d", res);
-        display_fatal_error(pax_buffer, ili9341, "Failed to initialize", "NVS failed to initialize", "Flash may be corrupted", NULL);
-        esp_restart();
-    }
 
     //display_boot_screen(pax_buffer, ili9341, "Initializing filesystem...");
     
@@ -217,12 +219,14 @@ void app_main(void) {
     bool sdcard_ready = (res == ESP_OK);
     if (sdcard_ready) {
         ESP_LOGI(TAG, "SD card filesystem mounted");
-    }
 
-    /* Start LEDs */
-    ws2812_init(GPIO_LED_DATA);
-    uint8_t ledBuffer[15] = {50, 0, 0, 50, 0, 0, 50, 0, 0, 50, 0, 0, 50, 0, 0};
-    ws2812_send_data(ledBuffer, sizeof(ledBuffer));
+        /* LED power is on: start LED driver and turn LEDs off */
+        ws2812_init(GPIO_LED_DATA);
+        const uint8_t led_off[15] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
+        ws2812_send_data(led_off, sizeof(led_off));
+    } else {
+        gpio_set_level(GPIO_SD_PWR, 0); // Disable power to LEDs and SD card
+    }
 
     /* Start WiFi */
     wifi_init();
diff --git a/main/menus/dev.c b/main/menus/dev.c
index c654d27..58564a0 100644
--- a/main/menus/dev.c
+++ b/main/menus/dev.c
@@ -95,7 +95,7 @@ void menu_dev(xQueueHandle buttonQueue, pax_buf_t* pax_buffer, ILI9341* ili9341)
             if (action == ACTION_FPGA_DL) {
                 fpga_download(buttonQueue, get_ice40(), pax_buffer, ili9341);
             } else if (action == ACTION_FPGA_TEST) {
-                fpga_test(buttonQueue, get_ice40(), pax_buffer, ili9341);
+                fpga_test(buttonQueue, pax_buffer, ili9341);
             } else if (action == ACTION_FILE_BROWSER) {
                 file_browser(buttonQueue, pax_buffer, ili9341, "/sd");
             } else if (action == ACTION_FILE_BROWSER_INT) {
diff --git a/main/settings.c b/main/settings.c
index 9af730f..5d2eff1 100644
--- a/main/settings.c
+++ b/main/settings.c
@@ -23,3 +23,62 @@ esp_err_t nvs_init() {
     }
     return ESP_OK;
 }
+
+esp_err_t nvs_get_str_fixed(const char* nvs_namespace, const char* key, char* target, size_t target_size, size_t* size) {
+    nvs_handle_t handle;
+    esp_err_t res;
+    
+    res = nvs_open(nvs_namespace, NVS_READWRITE, &handle);
+    if (res != ESP_OK) return res;
+    
+    size_t required_size;
+    res = nvs_get_str(handle, key, NULL, &required_size);
+    if (res != ESP_OK) {
+        nvs_close(handle);
+        return res;
+    }
+    
+    if (required_size > target_size) {
+        nvs_close(handle);
+        return ESP_FAIL;
+    }
+
+    res = nvs_get_str(handle, key, target, &required_size);
+    
+    if (size != NULL) *size = required_size;
+    
+    nvs_close(handle);
+    
+    return res;
+}
+
+uint8_t nvs_get_u8_default(const char* nvs_namespace, const char* key, uint8_t default_value) {
+    nvs_handle_t handle;
+    esp_err_t res;
+
+    res = nvs_open(nvs_namespace, NVS_READWRITE, &handle);
+    if (res != ESP_OK) return default_value;
+
+    uint8_t target;
+    res = nvs_get_u8(handle, key, &target);
+    if (res != ESP_OK) {
+        nvs_close(handle);
+        return default_value;
+    }
+    
+    nvs_close(handle);
+    return target;
+}
+
+esp_err_t nvs_set_u8_fixed(const char* nvs_namespace, const char* key, uint8_t value) {
+    nvs_handle_t handle;
+    esp_err_t res;
+
+    res = nvs_open(nvs_namespace, NVS_READWRITE, &handle);
+    if (res != ESP_OK) return res;
+    
+    res = nvs_set_u8(handle, key, value);
+    nvs_close(handle);
+    
+    return res;
+}
diff --git a/main/test_common.c b/main/test_common.c
new file mode 100644
index 0000000..c074816
--- /dev/null
+++ b/main/test_common.c
@@ -0,0 +1,65 @@
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <esp_log.h>
+#include <freertos/FreeRTOS.h>
+#include <freertos/queue.h>
+#include <driver/gpio.h>
+#include "hardware.h"
+#include "ili9341.h"
+#include "ice40.h"
+#include "rp2040.h"
+#include "pax_gfx.h"
+
+typedef bool (*test_fn)(uint32_t *rc);
+
+bool test_wait_for_response(uint32_t *rc) {
+    RP2040* rp2040 = get_rp2040();
+    rp2040_input_message_t button_message = {0};
+    if (rc != NULL) *rc = 0;
+    while (1) {
+        if (xQueueReceive(rp2040->queue, &button_message, portMAX_DELAY) == pdTRUE) {
+            if (button_message.state) {
+                switch(button_message.input) {
+                    case RP2040_INPUT_BUTTON_HOME:
+                    case RP2040_INPUT_BUTTON_MENU:
+                    case RP2040_INPUT_BUTTON_BACK:
+                        return false;
+                    case RP2040_INPUT_BUTTON_ACCEPT:
+                        if (rc != NULL) *rc = 1;
+                        return true;
+                    default:
+                        break;
+                }
+            }
+        }
+    }
+}
+
+bool run_test(pax_buf_t* pax_buffer, const pax_font_t *font, ILI9341* ili9341, int line, const char *test_name, test_fn fn) {
+    bool test_result;
+    uint32_t rc;
+
+    /* Test name */
+    pax_draw_text(pax_buffer, 0xffffffff, font, 18, 0, 20*line, test_name);
+    if (ili9341) ili9341_write(ili9341, pax_buffer->buf);
+
+    /* Run the test */
+    test_result = fn(&rc);
+
+    /* Display result */
+    if (!test_result) {
+        /* Error */
+        char buf[10];
+        snprintf(buf, sizeof(buf), "%08x", rc);
+        pax_draw_text(pax_buffer, 0xffff0000, font, 18, 200, 20*line, buf);
+    } else {
+        /* OK ! */
+        pax_draw_text(pax_buffer, 0xff00ff00, font, 18, 200, 20*line, "      OK");
+    }
+
+    if (ili9341) ili9341_write(ili9341, pax_buffer->buf);
+
+    /* Pass through the 'OK' status */
+    return test_result;
+}