diff --git a/bootloader/hos/hos.c b/bootloader/hos/hos.c
index c360590..a960267 100644
--- a/bootloader/hos/hos.c
+++ b/bootloader/hos/hos.c
@@ -679,7 +679,7 @@ int hos_launch(ini_sec_t *cfg)
 
 	// Config Exosphère if booting full Atmosphère.
 	if (ctxt.atmosphere && ctxt.secmon)
-		config_exosphere(ctxt.pkg1_id->id, ctxt.pkg1_id->kb, (void *)ctxt.pkg1_id->warmboot_base, ctxt.stock);
+		config_exosphere(&ctxt);
 
 	// Finalize MC carveout.
 	if (ctxt.pkg1_id->kb <= KB_FIRMWARE_VERSION_301)
diff --git a/bootloader/hos/hos.h b/bootloader/hos/hos.h
index 8c1dd35..b91d4b0 100644
--- a/bootloader/hos/hos.h
+++ b/bootloader/hos/hos.h
@@ -62,6 +62,7 @@ typedef struct _launch_ctxt_t
 	bool debugmode;
 	bool stock;
 	bool atmosphere;
+	bool exo_no_user_exceptions;
 	bool emuMMC;
 
 	ini_sec_t *cfg;
diff --git a/bootloader/hos/hos_config.c b/bootloader/hos/hos_config.c
index fd5f1fa..ff4e146 100644
--- a/bootloader/hos/hos_config.c
+++ b/bootloader/hos/hos_config.c
@@ -191,6 +191,16 @@ static int _config_atmosphere(launch_ctxt_t *ctxt, const char *value)
 	return 1;
 }
 
+static int _config_dis_exo_user_exceptions(launch_ctxt_t *ctxt, const char *value)
+{
+	if (*value == '1')
+	{
+		DPRINTF("Disabled exosphere user exception handlers\n");
+		ctxt->exo_no_user_exceptions = true;
+	}
+	return 1;
+}
+
 static int _config_fss(launch_ctxt_t *ctxt, const char *value)
 {
 	return parse_fss(ctxt, value);
@@ -212,6 +222,7 @@ static const cfg_handler_t _config_handlers[] = {
 	{ "debugmode", _config_debugmode },
 	{ "stock", _config_stock },
 	{ "atmosphere", _config_atmosphere },
+	{ "nouserexceptions", _config_dis_exo_user_exceptions },
 	{ "fss0", _config_fss },
 	{ NULL, NULL },
 };
diff --git a/bootloader/hos/secmon_exo.c b/bootloader/hos/secmon_exo.c
index 74bf4c5..19aebf3 100644
--- a/bootloader/hos/secmon_exo.c
+++ b/bootloader/hos/secmon_exo.c
@@ -131,11 +131,12 @@ typedef struct _atm_fatal_error_ctx
 
 // Exosphère mailbox defines.
 #define EXO_CFG_ADDR      0x8000F000
-#define  EXO_MAGIC_VAL      0x304F5845
-#define  EXO_FLAG_DBG_PRIV  (1 << 1)
-#define  EXO_FLAG_DBG_USER  (1 << 2)
+#define  EXO_MAGIC_VAL        0x304F5845
+#define  EXO_FLAG_DBG_PRIV    (1 << 1)
+#define  EXO_FLAG_DBG_USER    (1 << 2)
+#define  EXO_FLAG_NO_USER_EXC (1 << 3)
 
-void config_exosphere(const char *id, u32 kb, void *warmboot, bool stock)
+void config_exosphere(launch_ctxt_t *ctxt)
 {
 	u32 exoFwNo = 0;
 	u32 exoFlags = 0;
@@ -144,10 +145,10 @@ void config_exosphere(const char *id, u32 kb, void *warmboot, bool stock)
 
 	volatile exo_cfg_t *exo_cfg = (exo_cfg_t *)EXO_CFG_ADDR;
 
-	switch (kb)
+	switch (ctxt->pkg1_id->kb)
 	{
 	case KB_FIRMWARE_VERSION_100_200:
-		if (!strcmp(id, "20161121183008"))
+		if (!strcmp(ctxt->pkg1_id->id, "20161121183008"))
 			exoFwNo = 1;
 		else
 			exoFwNo = 2;
@@ -156,16 +157,20 @@ void config_exosphere(const char *id, u32 kb, void *warmboot, bool stock)
 		exoFwNo = 3;
 		break;
 	default:
-		exoFwNo = kb + 1;
-		if (!strcmp(id, "20190314172056") || !strcmp(id, "20190531152432"))
+		exoFwNo = ctxt->pkg1_id->kb + 1;
+		if (!strcmp(ctxt->pkg1_id->id, "20190314172056") || !strcmp(ctxt->pkg1_id->id, "20190531152432"))
 			exoFwNo++; // ATM_TARGET_FW_800/810.
 		break;
 	}
 
 	// To avoid problems, make private debug mode always on if not semi-stock.
-	if (!stock || (emu_cfg.enabled && !h_cfg.emummc_force_disable))
+	if (!ctxt->stock || (emu_cfg.enabled && !h_cfg.emummc_force_disable))
 		exoFlags |= EXO_FLAG_DBG_PRIV;
 
+	// Disable proper failure handling.
+	if (ctxt->exo_no_user_exceptions)
+		exoFlags |= EXO_FLAG_NO_USER_EXC;
+
 	// Set mailbox values.
 	exo_cfg->magic = EXO_MAGIC_VAL;
 
@@ -174,7 +179,7 @@ void config_exosphere(const char *id, u32 kb, void *warmboot, bool stock)
 	exo_cfg->flags = exoFlags;
 
 	// If warmboot is lp0fw, add in RSA modulus.
-	volatile wb_cfg_t *wb_cfg = (wb_cfg_t *)(warmboot + ATM_WB_HEADER_OFF);
+	volatile wb_cfg_t *wb_cfg = (wb_cfg_t *)(ctxt->pkg1_id->warmboot_base + ATM_WB_HEADER_OFF);
 
 	if (wb_cfg->magic == ATM_WB_MAGIC)
 	{
@@ -197,7 +202,7 @@ void config_exosphere(const char *id, u32 kb, void *warmboot, bool stock)
 		else
 			rsa_mod[0x10] = 0x37;
 
-		memcpy(warmboot + 0x10, rsa_mod + 0x10, 0x100);
+		memcpy((void *)(ctxt->pkg1_id->warmboot_base + 0x10), rsa_mod + 0x10, 0x100);
 	}
 
 	if (emu_cfg.enabled && !h_cfg.emummc_force_disable)
@@ -212,9 +217,9 @@ void config_exosphere(const char *id, u32 kb, void *warmboot, bool stock)
 		else
 			strcpy((char *)exo_cfg->emummc_cfg.file_cfg.path, emu_cfg.path);
 
-		if (emu_cfg.nintendo_path && !stock)
+		if (emu_cfg.nintendo_path && !ctxt->stock)
 			strcpy((char *)exo_cfg->emummc_cfg.nintendo_path, emu_cfg.nintendo_path);
-		else if (stock)
+		else if (ctxt->stock)
 			strcpy((char *)exo_cfg->emummc_cfg.nintendo_path, "Nintendo");
 		else
 			exo_cfg->emummc_cfg.nintendo_path[0] = 0;
diff --git a/bootloader/hos/secmon_exo.h b/bootloader/hos/secmon_exo.h
index 919edcd..7ab4c8b 100644
--- a/bootloader/hos/secmon_exo.h
+++ b/bootloader/hos/secmon_exo.h
@@ -19,7 +19,7 @@
 
 #include "../utils/types.h"
 
-void config_exosphere(const char *id, u32 kb, void *warmboot, bool stock);
+void config_exosphere(launch_ctxt_t *ctxt);
 void secmon_exo_check_panic();
 
 #endif