diff --git a/Modified BDK files.md b/Modified BDK files.md
index de2044a..936a5ac 100644
--- a/Modified BDK files.md	
+++ b/Modified BDK files.md	
@@ -4,6 +4,7 @@ For future reference if updating the BDK
 
 ## /bdk/sec/SE.c&h
 - Added se_aes_cmac
+- Added se_calc_hmac_sha256
 
 ## /bdk/usb
 - Removed entirely
diff --git a/source/libs/fatfs/diskio.c b/source/libs/fatfs/diskio.c
index f66acea..84654a0 100644
--- a/source/libs/fatfs/diskio.c
+++ b/source/libs/fatfs/diskio.c
@@ -63,7 +63,7 @@ DRESULT disk_read (
 		return sdmmc_storage_read(&sd_storage, sector, count, buff) ? RES_OK : RES_ERROR;
 
 	case DRIVE_BIS:
-		return nx_emmc_bis_read(sector, count, buff);
+		return nx_emmc_bis_read(sector, count, buff) ? RES_OK : RES_ERROR;
 	}
 
 	return RES_ERROR;
@@ -85,7 +85,7 @@ DRESULT disk_write (
 		return sdmmc_storage_write(&sd_storage, sector, count, (void *)buff) ? RES_OK : RES_ERROR;
 
 	case DRIVE_BIS:
-		return nx_emmc_bis_write(sector, count, (void *)buff);
+		return nx_emmc_bis_write(sector, count, (void *)buff) ? RES_OK : RES_ERROR;
 	}
 
 	return RES_ERROR;
diff --git a/source/storage/emmcfile.c b/source/storage/emmcfile.c
index 9f2423a..61b67de 100644
--- a/source/storage/emmcfile.c
+++ b/source/storage/emmcfile.c
@@ -42,7 +42,7 @@ ErrCode_t EmmcDumpToFile(const char *path, u32 lba_start, u32 lba_end, u8 force,
         
         int readRes = 0;
         if (crypt)
-            readRes = !nx_emmc_bis_read(curLba, num, buff);
+            readRes = nx_emmc_bis_read(curLba, num, buff);
         else 
             readRes = emummc_storage_read(curLba, num, buff);
 
@@ -106,7 +106,7 @@ ErrCode_t EmmcRestoreFromFile(const char *path, u32 lba_start, u32 lba_end, u8 f
 
         int writeRes = 0;
         if (crypt)
-            writeRes = !nx_emmc_bis_write(curLba, num, buff);
+            writeRes = nx_emmc_bis_write(curLba, num, buff);
         else 
             writeRes = emummc_storage_write(curLba, num, buff);
 
diff --git a/source/storage/emummc.c b/source/storage/emummc.c
index a920fcf..ba971ec 100644
--- a/source/storage/emummc.c
+++ b/source/storage/emummc.c
@@ -178,8 +178,6 @@ int emummc_storage_end()
 {
 	if (!emu_cfg.enabled || h_cfg.emummc_force_disable)
 		sdmmc_storage_end(&emmc_storage);
-	else
-		sd_end();
 
 	return 1;
 }