diff --git a/bootloader/hos/hos.c b/bootloader/hos/hos.c
index 8cbb8d4..2e05086 100644
--- a/bootloader/hos/hos.c
+++ b/bootloader/hos/hos.c
@@ -720,6 +720,9 @@ int hos_launch(ini_sec_t *cfg)
 	bpmp_clk_rate_set(BPMP_CLK_NORMAL);
 	minerva_change_freq(FREQ_800);
 
+	// emuMMC: Some cards (Sandisk U1), do not like a fast power cycle. Wait min 100ms.
+	sdmmc_storage_init_wait_sd();
+
 	// Wait for secmon to get ready.
 	if (smmu_is_used())
 		smmu_exit();
@@ -733,7 +736,7 @@ int hos_launch(ini_sec_t *cfg)
 
 	// Halt ourselves in waitevent state and resume if there's JTAG activity.
 	while (true)
-		FLOW_CTLR(FLOW_CTLR_HALT_COP_EVENTS) = 0x50000000;
+		bpmp_halt();
 
 	return 0;
 }
diff --git a/bootloader/main.c b/bootloader/main.c
index 095f4bc..3ab5597 100644
--- a/bootloader/main.c
+++ b/bootloader/main.c
@@ -324,7 +324,8 @@ int launch_payload(char *path, bool update)
 		void (*ext_payload_ptr)() = (void *)EXT_PAYLOAD_ADDR;
 		void (*update_ptr)() = (void *)RCM_PAYLOAD_ADDR;
 
-		msleep(100);
+		// Some cards (Sandisk U1), do not like a fast power cycle. Wait min 100ms.
+		sdmmc_storage_init_wait_sd();
 
 		// Launch our payload.
 		if (!update)
@@ -719,9 +720,7 @@ void nyx_load_run()
 	minerva_periodic_training();
 
 	// Some cards (Sandisk U1), do not like a fast power cycle. Wait min 100ms.
-	u32 sd_poweroff_time = (u32)get_tmr_ms() - h_cfg.sd_timeoff;
-	if (sd_poweroff_time < 100)
-		msleep(100 - sd_poweroff_time);
+	sdmmc_storage_init_wait_sd();
 
 	(*nyx_ptr)();
 }
diff --git a/bootloader/storage/sdmmc.c b/bootloader/storage/sdmmc.c
index a28d3dd..db37944 100644
--- a/bootloader/storage/sdmmc.c
+++ b/bootloader/storage/sdmmc.c
@@ -835,7 +835,7 @@ int _sd_storage_enable_highspeed_low_volt(sdmmc_storage_t *storage, u32 type, u8
 	u32 hs_type = 0;
 	switch (type)
 	{
-	case 11:
+	case 11: // SDR104.
 		// Fall through if not supported.
 		if (buf[13] & SD_MODE_UHS_SDR104)
 		{
@@ -845,7 +845,7 @@ int _sd_storage_enable_highspeed_low_volt(sdmmc_storage_t *storage, u32 type, u8
 			storage->csd.busspeed = 104;
 			break;
 		}
-	case 10:
+	case 10: // SDR50.
 		if (buf[13] & SD_MODE_UHS_SDR50)
 		{
 			type = 10;
@@ -854,7 +854,7 @@ int _sd_storage_enable_highspeed_low_volt(sdmmc_storage_t *storage, u32 type, u8
 			storage->csd.busspeed = 50;
 			break;
 		}
-	case 8:
+	case 8: // SDR12.
 		if (!(buf[13] & SD_MODE_UHS_SDR12))
 			return 0;
 		type = 8;
@@ -1012,14 +1012,19 @@ static void _sd_storage_parse_csd(sdmmc_storage_t *storage)
 	}
 }
 
+void sdmmc_storage_init_wait_sd()
+{
+	u32 sd_poweroff_time = (u32)get_tmr_ms() - h_cfg.sd_timeoff;
+	if (sd_poweroff_time < 100)
+		msleep(100 - sd_poweroff_time);
+}
+
 int sdmmc_storage_init_sd(sdmmc_storage_t *storage, sdmmc_t *sdmmc, u32 id, u32 bus_width, u32 type)
 {
 	int is_version_1 = 0;
 	
 	// Some cards (Sandisk U1), do not like a fast power cycle. Wait min 100ms.
-	u32 sd_poweroff_time = (u32)get_tmr_ms() - h_cfg.sd_timeoff;
-	if (id == SDMMC_1 && (sd_poweroff_time < 100))
-		msleep(100 - sd_poweroff_time);
+	sdmmc_storage_init_wait_sd();
 
 	memset(storage, 0, sizeof(sdmmc_storage_t));
 	storage->sdmmc = sdmmc;
diff --git a/bootloader/storage/sdmmc.h b/bootloader/storage/sdmmc.h
index 7ae20e3..2427324 100644
--- a/bootloader/storage/sdmmc.h
+++ b/bootloader/storage/sdmmc.h
@@ -107,6 +107,7 @@ int sdmmc_storage_read(sdmmc_storage_t *storage, u32 sector, u32 num_sectors, vo
 int sdmmc_storage_write(sdmmc_storage_t *storage, u32 sector, u32 num_sectors, void *buf);
 int sdmmc_storage_init_mmc(sdmmc_storage_t *storage, sdmmc_t *sdmmc, u32 id, u32 bus_width, u32 type);
 int sdmmc_storage_set_mmc_partition(sdmmc_storage_t *storage, u32 partition);
+void sdmmc_storage_init_wait_sd();
 int sdmmc_storage_init_sd(sdmmc_storage_t *storage, sdmmc_t *sdmmc, u32 id, u32 bus_width, u32 type);
 int sdmmc_storage_init_gc(sdmmc_storage_t *storage, sdmmc_t *sdmmc);
 
diff --git a/nyx/nyx_gui/frontend/gui.c b/nyx/nyx_gui/frontend/gui.c
index 64865f9..0b7839c 100644
--- a/nyx/nyx_gui/frontend/gui.c
+++ b/nyx/nyx_gui/frontend/gui.c
@@ -735,6 +735,9 @@ static void _reload_nyx()
 
 	reconfig_hw_workaround(false, 0);
 
+	// Some cards (Sandisk U1), do not like a fast power cycle. Wait min 100ms.
+	sdmmc_storage_init_wait_sd();
+
 	(*main_ptr)();
 }
 
diff --git a/nyx/nyx_gui/nyx.c b/nyx/nyx_gui/nyx.c
index 1144f5d..b4baccd 100644
--- a/nyx/nyx_gui/nyx.c
+++ b/nyx/nyx_gui/nyx.c
@@ -293,6 +293,9 @@ lv_res_t launch_payload(lv_obj_t *list)
 
 		void (*ext_payload_ptr)() = (void *)EXT_PAYLOAD_ADDR;
 
+		// Some cards (Sandisk U1), do not like a fast power cycle. Wait min 100ms.
+		sdmmc_storage_init_wait_sd();
+
 		// Launch our payload.
 		(*ext_payload_ptr)();
 	}
diff --git a/nyx/nyx_gui/storage/sdmmc.c b/nyx/nyx_gui/storage/sdmmc.c
index a52f411..b0837ec 100644
--- a/nyx/nyx_gui/storage/sdmmc.c
+++ b/nyx/nyx_gui/storage/sdmmc.c
@@ -1015,14 +1015,19 @@ static void _sd_storage_parse_csd(sdmmc_storage_t *storage)
 	}
 }
 
+void sdmmc_storage_init_wait_sd()
+{
+	u32 sd_poweroff_time = (u32)get_tmr_ms() - h_cfg.sd_timeoff;
+	if (sd_poweroff_time < 100)
+		msleep(100 - sd_poweroff_time);
+}
+
 int sdmmc_storage_init_sd(sdmmc_storage_t *storage, sdmmc_t *sdmmc, u32 id, u32 bus_width, u32 type)
 {
 	int is_version_1 = 0;
 	
 	// Some cards (Sandisk U1), do not like a fast power cycle. Wait min 100ms.
-	u32 sd_poweroff_time = (u32)get_tmr_ms() - h_cfg.sd_timeoff;
-	if (id == SDMMC_1 && (sd_poweroff_time < 100))
-		msleep(100 - sd_poweroff_time);
+	sdmmc_storage_init_wait_sd();
 
 	memset(storage, 0, sizeof(sdmmc_storage_t));
 	storage->sdmmc = sdmmc;
diff --git a/nyx/nyx_gui/storage/sdmmc.h b/nyx/nyx_gui/storage/sdmmc.h
index 7ae20e3..2427324 100644
--- a/nyx/nyx_gui/storage/sdmmc.h
+++ b/nyx/nyx_gui/storage/sdmmc.h
@@ -107,6 +107,7 @@ int sdmmc_storage_read(sdmmc_storage_t *storage, u32 sector, u32 num_sectors, vo
 int sdmmc_storage_write(sdmmc_storage_t *storage, u32 sector, u32 num_sectors, void *buf);
 int sdmmc_storage_init_mmc(sdmmc_storage_t *storage, sdmmc_t *sdmmc, u32 id, u32 bus_width, u32 type);
 int sdmmc_storage_set_mmc_partition(sdmmc_storage_t *storage, u32 partition);
+void sdmmc_storage_init_wait_sd();
 int sdmmc_storage_init_sd(sdmmc_storage_t *storage, sdmmc_t *sdmmc, u32 id, u32 bus_width, u32 type);
 int sdmmc_storage_init_gc(sdmmc_storage_t *storage, sdmmc_t *sdmmc);