diff --git a/Makefile b/Makefile
index 3e4394e..b860e7a 100755
--- a/Makefile
+++ b/Makefile
@@ -8,11 +8,7 @@ include $(DEVKITARM)/base_rules
 
 IPL_LOAD_ADDR := 0x40008000
 IPL_MAGIC := 0x43544349 #"ICTC"
-BLVERSION_MAJOR := 5
-BLVERSION_MINOR := 1
-BLVERSION_HOTFX := 0
-
-BL_RESERVED := 0
+include ./Versions.inc
 
 ################################################################################
 
@@ -60,7 +56,8 @@ OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
 ################################################################################
 
 CUSTOMDEFINES := -DIPL_LOAD_ADDR=$(IPL_LOAD_ADDR) -DBL_MAGIC=$(IPL_MAGIC)
-CUSTOMDEFINES += -DBL_VER_MJ=$(BLVERSION_MAJOR) -DBL_VER_MN=$(BLVERSION_MINOR) -DBL_VER_HF=$(BLVERSION_HOTFX) -DBL_RESERVED=$(BL_RESERVED)
+CUSTOMDEFINES += -DBL_VER_MJ=$(BLVERSION_MAJOR) -DBL_VER_MN=$(BLVERSION_MINOR) -DBL_VER_HF=$(BLVERSION_HOTFX) -DBL_RESERVED=$(BLVERSION_RSVD)
+CUSTOMDEFINES += -DNYX_VER_MJ=$(NYXVERSION_MAJOR) -DNYX_VER_MN=$(NYXVERSION_MINOR) -DNYX_VER_HF=$(NYXVERSION_HOTFX) -DNYX_RESERVED=$(NYXVERSION_RSVD)
 #CUSTOMDEFINES += -DMENU_LOGO_ENABLE
 
 # 0: UART_A, 1: UART_B.
diff --git a/Versions.inc b/Versions.inc
new file mode 100644
index 0000000..5440828
--- /dev/null
+++ b/Versions.inc
@@ -0,0 +1,11 @@
+# IPL Version.
+BLVERSION_MAJOR := 5
+BLVERSION_MINOR := 1
+BLVERSION_HOTFX := 0
+BLVERSION_RSVD := 0
+
+# Nyx Version.
+NYXVERSION_MAJOR := 0
+NYXVERSION_MINOR := 8
+NYXVERSION_HOTFX := 3
+NYXVERSION_RSVD := 0
diff --git a/bootloader/config/config.h b/bootloader/config/config.h
index 8cd34e1..96ca8d0 100644
--- a/bootloader/config/config.h
+++ b/bootloader/config/config.h
@@ -40,11 +40,6 @@ typedef struct _hekate_config
 	u32  errors;
 } hekate_config;
 
-typedef enum
-{
-	ERR_LIBSYS_LP0 = (1 << 0),
-} hsysmodule_t;
-
 void set_default_configuration();
 int create_config_entry();
 void config_autoboot();
diff --git a/bootloader/gfx/tui.c b/bootloader/gfx/tui.c
index c15ddbc..b31cb39 100644
--- a/bootloader/gfx/tui.c
+++ b/bootloader/gfx/tui.c
@@ -157,13 +157,9 @@ void *tui_do_menu(menu_t *menu)
 		gfx_con_setcol(0xFFCCCCCC, 1, 0xFF1B1B1B);
 		gfx_putc('\n');
 
-		// Print erros, help and battery status.
-		gfx_con_setpos(0,  h_cfg.errors ? 1111 : 1127);
-		gfx_printf("%k Warning: %k", 0xFF800000, 0xFF555555);
-		if (h_cfg.errors & ERR_LIBSYS_LP0)
-			gfx_printf("Sleep mode library is missing!\n");
-		gfx_printf("          Nyx is missing!\n");
-
+		// Print errors, help and battery status.
+		gfx_con_setpos(0,  1127);
+		gfx_printf("%k Warning: %k Nyx is missing!", 0xFF800000, 0xFF555555);
 		gfx_con_setpos(0,  1191);
 		gfx_printf("%k VOL: Move up/down\n PWR: Select option%k", 0xFF555555, 0xFFCCCCCC);
 
diff --git a/bootloader/main.c b/bootloader/main.c
index 526ee3e..1f05246 100644
--- a/bootloader/main.c
+++ b/bootloader/main.c
@@ -678,6 +678,8 @@ out:
 	btn_wait();
 }
 
+#define NYX_VER_OFF 0x9C
+
 void nyx_load_run()
 {
 	sd_mount();
@@ -688,6 +690,9 @@ void nyx_load_run()
 
 	sd_unmount();
 
+	u32 expected_nyx_ver = ((NYX_VER_MJ + '0') << 24) | ((NYX_VER_MN + '0') << 16) | ((NYX_VER_HF + '0') << 8);
+	u32 nyx_ver = byte_swap_32(*(u32 *)(nyx + NYX_VER_OFF));
+
 	gfx_clear_grey(0x1B);
 	u8 *BOOTLOGO = (void *)malloc(0x4000);
 	blz_uncompress_srcdest(BOOTLOGO_BLZ, SZ_BOOTLOGO_BLZ, BOOTLOGO, SZ_BOOTLOGO);
@@ -695,16 +700,29 @@ void nyx_load_run()
 	free(BOOTLOGO);
 	display_backlight_brightness(h_cfg.backlight, 1000);
 
+	// Check if Nyx version is old.
+	if (nyx_ver < expected_nyx_ver)
+	{
+		h_cfg.errors |= ERR_SYSOLD_NYX;
+
+		gfx_con_setpos(0, 0);
+		WPRINTF("Old Nyx GUI found! There will be dragons!\n");
+		WPRINTF("\nUpdate your bootloader folder!\n\n");
+		WPRINTF("Press any key...");
+
+		msleep(2000);
+		btn_wait();
+	}
+
+	nyx_str->info.errors = h_cfg.errors;
 	nyx_str->cfg = 0;
 	if (b_cfg.extra_cfg & EXTRA_CFG_NYX_DUMP)
 	{
 		b_cfg.extra_cfg &= ~(EXTRA_CFG_NYX_DUMP);
 		nyx_str->cfg |= NYX_CFG_DUMP;
 	}
-	if (nyx_str->mtc_cfg.mtc_table)
-		nyx_str->cfg |= NYX_CFG_MINERVA;
 
-	nyx_str->version = ipl_ver.version - 0x303030;
+	nyx_str->version = ipl_ver.version - 0x303030; // Convert ASCII to numbers.
 
 	//memcpy((u8 *)nyx_str->irama, (void *)IRAM_BASE, 0x8000);
 	volatile reloc_meta_t *reloc = (reloc_meta_t *)(IPL_LOAD_ADDR + RELOC_META_OFF);
@@ -749,7 +767,7 @@ static ini_sec_t *get_ini_sec_from_id(ini_sec_t *ini_sec, char **bootlogoCustomE
 	return cfg_sec;
 }
 
-void auto_launch_firmware()
+static void _auto_launch_firmware()
 {
 	if(b_cfg.extra_cfg & EXTRA_CFG_NYX_DUMP)
 	{
@@ -1019,7 +1037,7 @@ skip_list:
 		hos_launch(cfg_sec);
 
 		EPRINTF("\nFailed to launch HOS!");
-		gfx_printf("\nPress any key and try again...\n");
+		gfx_printf("\nPress any key...\n");
 		msleep(500);
 		btn_wait();
 	}
@@ -1038,7 +1056,7 @@ out:
 	sd_unmount();
 }
 
-void patched_rcm_protection()
+static void _patched_rcm_protection()
 {
 	sdmmc_storage_t storage;
 	sdmmc_t sdmmc;
@@ -1080,7 +1098,28 @@ void patched_rcm_protection()
 	sdmmc_storage_end(&storage);
 }
 
-void about()
+static void _show_errors()
+{
+	if (h_cfg.errors)
+	{
+		gfx_clear_grey(0x1B);
+		gfx_con_setpos(0, 0);
+		display_backlight_brightness(h_cfg.backlight, 1000);
+
+		if (h_cfg.errors & ERR_LIBSYS_LP0)
+			WPRINTF("Missing LP0 (sleep mode) library!\n");
+		if (h_cfg.errors & ERR_SYSOLD_MTC)
+			WPRINTF("Missing or old Minerva library!\n");
+
+		WPRINTF("\nUpdate your bootloader folder!\n\n");
+		WPRINTF("Press any key...");
+
+		msleep(2000);
+		btn_wait();
+	}
+}
+
+static void _about()
 {
 	static const char credits[] =
 		"\nhekate     (c) 2018 naehrwert, st4rk\n\n"
@@ -1228,7 +1267,7 @@ ment_t ment_top[] = {
 	MDEF_HANDLER("Reboot (RCM)", reboot_rcm),
 	MDEF_HANDLER("Power off", power_off),
 	MDEF_CAPTION("---------------", 0xFF444444),
-	MDEF_HANDLER("About", about),
+	MDEF_HANDLER("About", _about),
 	MDEF_END()
 };
 
@@ -1262,7 +1301,8 @@ void ipl_main()
 		h_cfg.errors |= ERR_LIBSYS_LP0;
 
 	// Train DRAM and switch to max frequency.
-	minerva_init();
+	if (minerva_init())
+		h_cfg.errors |= ERR_SYSOLD_MTC;
 
 	display_init();
 
@@ -1286,13 +1326,16 @@ void ipl_main()
 	secmon_exo_check_panic();
 
 	// Check if RCM is patched and protect from a possible brick.
-	patched_rcm_protection();
+	_patched_rcm_protection();
 
 	// Load emuMMC configuration from SD.
 	emummc_load_cfg();
 
+	// Show library errors.
+	_show_errors();
+
 	// Load saved configuration and auto boot if enabled.
-	auto_launch_firmware();
+	_auto_launch_firmware();
 
 	minerva_change_freq(FREQ_800);
 
diff --git a/bootloader/utils/util.h b/bootloader/utils/util.h
index 55f5f18..cdddc85 100644
--- a/bootloader/utils/util.h
+++ b/bootloader/utils/util.h
@@ -21,8 +21,17 @@
 #include "types.h"
 #include "../mem/minerva.h"
 
-#define NYX_CFG_DUMP    (1 << 7)
-#define NYX_CFG_MINERVA (1 << 8)
+typedef enum
+{
+	NYX_CFG_DUMP    = (1 << 7),
+} nyx_cfg_t;
+
+typedef enum
+{
+	ERR_LIBSYS_LP0 = (1 << 0),
+	ERR_SYSOLD_NYX = (1 << 1),
+	ERR_SYSOLD_MTC = (1 << 2),
+} hekate_errors_t;
 
 #define byte_swap_32(num) (((num >> 24) & 0xff) | ((num << 8) & 0xff0000) | \
 						((num >> 8 )& 0xff00) | ((num << 24) & 0xff000000))
@@ -33,13 +42,20 @@ typedef struct _cfg_op_t
 	u32 val;
 } cfg_op_t;
 
+typedef struct _nyx_info_t
+{
+	u32 rsvd;
+	u32 errors;
+} nyx_info_t;
+
 typedef struct _nyx_storage_t
 {
 	u32 version;
 	u32 cfg;
 	u8  irama[0x8000];
 	u8  hekate[0x30000];
-	u8  rsvd[0x800000];
+	u8  rsvd[0x800000 - sizeof(nyx_info_t)];
+	nyx_info_t info;
 	mtc_config_t mtc_cfg;
 	emc_table_t mtc_table;
 } nyx_storage_t;
diff --git a/nyx/Makefile b/nyx/Makefile
index 6213835..af144ab 100644
--- a/nyx/Makefile
+++ b/nyx/Makefile
@@ -8,11 +8,7 @@ include $(DEVKITARM)/base_rules
 
 NYX_LOAD_ADDR := 0x81000000
 NYX_MAGIC := 0x43544347 #"GCTC"
-BLVERSION_MAJOR := 0
-BLVERSION_MINOR := 8
-BLVERSION_HOTFX := 3
-
-BL_RESERVED := 0
+include ./../Versions.inc
 
 ################################################################################
 
@@ -72,8 +68,8 @@ OBJS += $(addprefix $(BUILDDIR)/$(TARGET)/, \
 
 ################################################################################
 
-CUSTOMDEFINES += -DNYX_LOAD_ADDR=$(NYX_LOAD_ADDR) -DBL_MAGIC=$(NYX_MAGIC)
-CUSTOMDEFINES += -DBL_VER_MJ=$(BLVERSION_MAJOR) -DBL_VER_MN=$(BLVERSION_MINOR) -DBL_VER_HF=$(BLVERSION_HOTFX) -DBL_RESERVED=$(BL_RESERVED)
+CUSTOMDEFINES += -DNYX_LOAD_ADDR=$(NYX_LOAD_ADDR) -DNYX_MAGIC=$(NYX_MAGIC)
+CUSTOMDEFINES += -DNYX_VER_MJ=$(NYXVERSION_MAJOR) -DNYX_VER_MN=$(NYXVERSION_MINOR) -DNYX_VER_HF=$(NYXVERSION_HOTFX) -DNYX_RESERVED=$(NYXVERSION_RSVD)
 
 # 0: UART_A, 1: UART_B.
 #CUSTOMDEFINES += -DDEBUG_UART_PORT=1
diff --git a/nyx/nyx_gui/config/config.h b/nyx/nyx_gui/config/config.h
index 9e29de1..32e934c 100644
--- a/nyx/nyx_gui/config/config.h
+++ b/nyx/nyx_gui/config/config.h
@@ -40,11 +40,6 @@ typedef struct _hekate_config
 	u32  errors;
 } hekate_config;
 
-typedef enum
-{
-	ERR_LIBSYS_LP0 = (1 << 0),
-} hsysmodule_t;
-
 void set_default_configuration();
 int create_config_entry();
 
diff --git a/nyx/nyx_gui/frontend/gui.c b/nyx/nyx_gui/frontend/gui.c
index 81e86ab..680024b 100644
--- a/nyx/nyx_gui/frontend/gui.c
+++ b/nyx/nyx_gui/frontend/gui.c
@@ -757,7 +757,7 @@ static void _create_tab_about(lv_theme_t * th, lv_obj_t * parent)
 	lv_obj_align(ctcaer_img, lbl_octopus, LV_ALIGN_OUT_BOTTOM_RIGHT, 0, LV_DPI * 2 / 3);
 
 	char version[32];
-	s_printf(version, "Nyx v%d.%d.%d", BL_VER_MJ, BL_VER_MN, BL_VER_HF);
+	s_printf(version, "Nyx v%d.%d.%d", NYX_VER_MJ, NYX_VER_MN, NYX_VER_HF);
 	lv_obj_t * lbl_ver = lv_label_create(parent, NULL);
 	lv_obj_align(lbl_ver, ctcaer_img, LV_ALIGN_OUT_BOTTOM_RIGHT, -LV_DPI / 20, LV_DPI / 4);
 	lv_ta_set_style(lbl_ver, LV_TA_STYLE_BG, &monospace_text);
diff --git a/nyx/nyx_gui/nyx.c b/nyx/nyx_gui/nyx.c
index 15e4e0f..79296e7 100644
--- a/nyx/nyx_gui/nyx.c
+++ b/nyx/nyx_gui/nyx.c
@@ -63,8 +63,8 @@ u8 *Kc_MENU_LOGO;
 hekate_config h_cfg;
 
 const volatile ipl_ver_meta_t __attribute__((section ("._ipl_version"))) ipl_ver = {
-	.magic = BL_MAGIC,
-	.version = (BL_VER_MJ + '0') | ((BL_VER_MN + '0') << 8) | ((BL_VER_HF + '0') << 16),
+	.magic = NYX_MAGIC,
+	.version = (NYX_VER_MJ + '0') | ((NYX_VER_MN + '0') << 8) | ((NYX_VER_HF + '0') << 16),
 	.rsvd0 = 0,
 	.rsvd1 = 0
 };
diff --git a/nyx/nyx_gui/utils/util.h b/nyx/nyx_gui/utils/util.h
index 55f5f18..cdddc85 100644
--- a/nyx/nyx_gui/utils/util.h
+++ b/nyx/nyx_gui/utils/util.h
@@ -21,8 +21,17 @@
 #include "types.h"
 #include "../mem/minerva.h"
 
-#define NYX_CFG_DUMP    (1 << 7)
-#define NYX_CFG_MINERVA (1 << 8)
+typedef enum
+{
+	NYX_CFG_DUMP    = (1 << 7),
+} nyx_cfg_t;
+
+typedef enum
+{
+	ERR_LIBSYS_LP0 = (1 << 0),
+	ERR_SYSOLD_NYX = (1 << 1),
+	ERR_SYSOLD_MTC = (1 << 2),
+} hekate_errors_t;
 
 #define byte_swap_32(num) (((num >> 24) & 0xff) | ((num << 8) & 0xff0000) | \
 						((num >> 8 )& 0xff00) | ((num << 24) & 0xff000000))
@@ -33,13 +42,20 @@ typedef struct _cfg_op_t
 	u32 val;
 } cfg_op_t;
 
+typedef struct _nyx_info_t
+{
+	u32 rsvd;
+	u32 errors;
+} nyx_info_t;
+
 typedef struct _nyx_storage_t
 {
 	u32 version;
 	u32 cfg;
 	u8  irama[0x8000];
 	u8  hekate[0x30000];
-	u8  rsvd[0x800000];
+	u8  rsvd[0x800000 - sizeof(nyx_info_t)];
+	nyx_info_t info;
 	mtc_config_t mtc_cfg;
 	emc_table_t mtc_table;
 } nyx_storage_t;