diff --git a/puma/BoardConfig.mk b/puma/BoardConfig.mk
index 8938459..5ac02bf 100644
--- a/puma/BoardConfig.mk
+++ b/puma/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config 
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/px30/BoardConfig.mk b/px30/BoardConfig.mk
index bd01bae..8e35a4c 100755
--- a/px30/BoardConfig.mk
+++ b/px30/BoardConfig.mk
@@ -37,8 +37,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/px30/BoardConfig_32bit.mk b/px30/BoardConfig_32bit.mk
index 0409cf5..226b1b0 100755
--- a/px30/BoardConfig_32bit.mk
+++ b/px30/BoardConfig_32bit.mk
@@ -35,8 +35,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/px30/BoardConfig_debian.mk b/px30/BoardConfig_debian.mk
index 10829d7..6a86a59 100755
--- a/px30/BoardConfig_debian.mk
+++ b/px30/BoardConfig_debian.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/px30/BoardConfig_open.mk b/px30/BoardConfig_open.mk
index 35a246a..cf7ab8f 100755
--- a/px30/BoardConfig_open.mk
+++ b/px30/BoardConfig_open.mk
@@ -37,8 +37,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/px30/BoardConfig_robot64.mk b/px30/BoardConfig_robot64.mk
index 3ea93cd..2eca439 100755
--- a/px30/BoardConfig_robot64.mk
+++ b/px30/BoardConfig_robot64.mk
@@ -37,8 +37,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/px30/BoardConfig_robot64_no_gpu.mk b/px30/BoardConfig_robot64_no_gpu.mk
index 04318b3..c4715cf 100644
--- a/px30/BoardConfig_robot64_no_gpu.mk
+++ b/px30/BoardConfig_robot64_no_gpu.mk
@@ -37,8 +37,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config: /oem/dueros/aispeech/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/px3se/BoardConfig.mk b/px3se/BoardConfig.mk
index 689a3cf..ed39eac 100755
--- a/px3se/BoardConfig.mk
+++ b/px3se/BoardConfig.mk
@@ -36,8 +36,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/px3se/BoardConfig_nand.mk b/px3se/BoardConfig_nand.mk
index fe608be..cdf830c 100755
--- a/px3se/BoardConfig_nand.mk
+++ b/px3se/BoardConfig_nand.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config
 export RK_OEM_DIR=oem_empty
 #userdata config
diff --git a/rk1808/BoardConfig.mk b/rk1808/BoardConfig.mk
index 3292816..23d6852 100755
--- a/rk1808/BoardConfig.mk
+++ b/rk1808/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config 
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk1808/BoardConfig_rk1808_compute_stick_emmc.mk b/rk1808/BoardConfig_rk1808_compute_stick_emmc.mk
index 31ffe65..7e78f45 100755
--- a/rk1808/BoardConfig_rk1808_compute_stick_emmc.mk
+++ b/rk1808/BoardConfig_rk1808_compute_stick_emmc.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config 
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk1808/BoardConfig_rk1808_multi.mk b/rk1808/BoardConfig_rk1808_multi.mk
index 5a95144..1a007b5 100755
--- a/rk1808/BoardConfig_rk1808_multi.mk
+++ b/rk1808/BoardConfig_rk1808_multi.mk
@@ -36,8 +36,6 @@ export RK_ROOTFS_IMG=
 export RK_OEM_FS_TYPE=
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=
 #OEM config: /oem/dueros/aispeech/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=
 #userdata config
diff --git a/rk3036/BoardConfig.mk b/rk3036/BoardConfig.mk
index a79f314..6952eec 100755
--- a/rk3036/BoardConfig.mk
+++ b/rk3036/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3126c/BoardConfig.mk b/rk3126c/BoardConfig.mk
index 2ba4b35..09324be 100755
--- a/rk3126c/BoardConfig.mk
+++ b/rk3126c/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3126c/BoardConfig_nand.mk b/rk3126c/BoardConfig_nand.mk
index 71d98f8..3715c6c 100755
--- a/rk3126c/BoardConfig_nand.mk
+++ b/rk3126c/BoardConfig_nand.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config
 export RK_OEM_DIR=oem_empty
 #userdata config
diff --git a/rk3128/BoardConfig.mk b/rk3128/BoardConfig.mk
index d08d789..1c917ab 100755
--- a/rk3128/BoardConfig.mk
+++ b/rk3128/BoardConfig.mk
@@ -32,8 +32,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3128h/BoardConfig.mk b/rk3128h/BoardConfig.mk
index 381dfad..62a187a 100755
--- a/rk3128h/BoardConfig.mk
+++ b/rk3128h/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3229/BoardConfig.mk b/rk3229/BoardConfig.mk
index 25683f1..249106c 100755
--- a/rk3229/BoardConfig.mk
+++ b/rk3229/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3288/BoardConfig.mk b/rk3288/BoardConfig.mk
index ea582fb..d31c82b 100755
--- a/rk3288/BoardConfig.mk
+++ b/rk3288/BoardConfig.mk
@@ -36,8 +36,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3288/BoardConfig_8846.mk b/rk3288/BoardConfig_8846.mk
index 9e3a548..c5d5a08 100755
--- a/rk3288/BoardConfig_8846.mk
+++ b/rk3288/BoardConfig_8846.mk
@@ -36,8 +36,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3288/BoardConfig_8846_debian.mk b/rk3288/BoardConfig_8846_debian.mk
index 442243c..677f39a 100755
--- a/rk3288/BoardConfig_8846_debian.mk
+++ b/rk3288/BoardConfig_8846_debian.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3288/BoardConfig_debian.mk b/rk3288/BoardConfig_debian.mk
index 984984e..69a8f9d 100755
--- a/rk3288/BoardConfig_debian.mk
+++ b/rk3288/BoardConfig_debian.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3288/BoardConfig_firefly.mk b/rk3288/BoardConfig_firefly.mk
index 2cb7901..5101309 100755
--- a/rk3288/BoardConfig_firefly.mk
+++ b/rk3288/BoardConfig_firefly.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3288/BoardConfig_firefly_debian.mk b/rk3288/BoardConfig_firefly_debian.mk
index 7d04764..5e41602 100755
--- a/rk3288/BoardConfig_firefly_debian.mk
+++ b/rk3288/BoardConfig_firefly_debian.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3308/BoardConfig.mk b/rk3308/BoardConfig.mk
index 1c40e0f..ef2f586 100755
--- a/rk3308/BoardConfig.mk
+++ b/rk3308/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config: /oem/dueros/aispeech-6mic-64bit/aispeech-2mic-64bit/aispeech-4mic-32bit/aispeech-2mic-32bit/aispeech-2mic-kongtiao-32bit/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=oem
 #userdata config
diff --git a/rk3308/BoardConfig_32bit.mk b/rk3308/BoardConfig_32bit.mk
index bc67f0e..2385f12 100755
--- a/rk3308/BoardConfig_32bit.mk
+++ b/rk3308/BoardConfig_32bit.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config: /oem/dueros/aispeech-6mic-64bit/aispeech-2mic-64bit/aispeech-4mic-32bit/aispeech-2mic-32bit/aispeech-2mic-kongtiao-32bit/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=oem
 #userdata config
diff --git a/rk3308/BoardConfig_robot32.mk b/rk3308/BoardConfig_robot32.mk
index 1b985a9..1583c15 100755
--- a/rk3308/BoardConfig_robot32.mk
+++ b/rk3308/BoardConfig_robot32.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config:
 export RK_OEM_DIR=oem_empty
 #userdata config
diff --git a/rk3308/BoardConfig_robot64.mk b/rk3308/BoardConfig_robot64.mk
index fc68595..e8e5139 100755
--- a/rk3308/BoardConfig_robot64.mk
+++ b/rk3308/BoardConfig_robot64.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config:
 export RK_OEM_DIR=oem_empty
 #userdata config
diff --git a/rk3308/BoardConfig_soundai_cmcc.mk b/rk3308/BoardConfig_soundai_cmcc.mk
index b80a932..0499b50 100755
--- a/rk3308/BoardConfig_soundai_cmcc.mk
+++ b/rk3308/BoardConfig_soundai_cmcc.mk
@@ -32,8 +32,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config: /oem/dueros/aispeech-6mic-64bit/aispeech-2mic-64bit/aispeech-4mic-32bit/aispeech-2mic-32bit/aispeech-2mic-kongtiao-32bit/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=cmcc_soundai
 #Build oem to rootfs 
diff --git a/rk3308/cmcc_soundai/BoardConfig_soundai_cmcc.mk b/rk3308/cmcc_soundai/BoardConfig_soundai_cmcc.mk
index a66d80e..da270d9 100755
--- a/rk3308/cmcc_soundai/BoardConfig_soundai_cmcc.mk
+++ b/rk3308/cmcc_soundai/BoardConfig_soundai_cmcc.mk
@@ -32,8 +32,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config: /oem/dueros/aispeech-6mic-64bit/aispeech-2mic-64bit/aispeech-4mic-32bit/aispeech-2mic-32bit/aispeech-2mic-kongtiao-32bit/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=soundai
 #Build oem to rootfs 
diff --git a/rk3308/rk3308_b_32_release_BoardConfig_32bit.mk b/rk3308/rk3308_b_32_release_BoardConfig_32bit.mk
index b1ef941..eca100f 100644
--- a/rk3308/rk3308_b_32_release_BoardConfig_32bit.mk
+++ b/rk3308/rk3308_b_32_release_BoardConfig_32bit.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config: /oem/dueros/aispeech-6mic-64bit/aispeech-2mic-64bit/aispeech-4mic-32bit/aispeech-2mic-32bit/aispeech-2mic-kongtiao-32bit/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=oem
 #userdata config
diff --git a/rk3308/rk3308_b_release_BoardConfig.mk b/rk3308/rk3308_b_release_BoardConfig.mk
index 3551317..260410b 100644
--- a/rk3308/rk3308_b_release_BoardConfig.mk
+++ b/rk3308/rk3308_b_release_BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config: /oem/dueros/aispeech-6mic-64bit/aispeech-2mic-64bit/aispeech-4mic-32bit/aispeech-2mic-32bit/aispeech-2mic-kongtiao-32bit/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=oem
 #userdata config
diff --git a/rk3308/rk3308_gk_32_release_BoardConfig_32bit.mk b/rk3308/rk3308_gk_32_release_BoardConfig_32bit.mk
index ef2379a..1842e31 100644
--- a/rk3308/rk3308_gk_32_release_BoardConfig_32bit.mk
+++ b/rk3308/rk3308_gk_32_release_BoardConfig_32bit.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=nand
 #OEM config: /oem/dueros/aispeech-6mic-64bit/aispeech-2mic-64bit/aispeech-4mic-32bit/aispeech-2mic-32bit/aispeech-2mic-kongtiao-32bit/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=oem
 #userdata config
diff --git a/rk3326/BoardConfig.mk b/rk3326/BoardConfig.mk
index 994757f..f32ee15 100755
--- a/rk3326/BoardConfig.mk
+++ b/rk3326/BoardConfig.mk
@@ -39,8 +39,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3326/BoardConfig_32bit.mk b/rk3326/BoardConfig_32bit.mk
index 603dbe1..7c35083 100755
--- a/rk3326/BoardConfig_32bit.mk
+++ b/rk3326/BoardConfig_32bit.mk
@@ -37,8 +37,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3326/BoardConfig_open.mk b/rk3326/BoardConfig_open.mk
index e6c1a2d..fdff9d7 100755
--- a/rk3326/BoardConfig_open.mk
+++ b/rk3326/BoardConfig_open.mk
@@ -37,8 +37,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3326/BoardConfig_robot32.mk b/rk3326/BoardConfig_robot32.mk
index 927a462..972bc70 100755
--- a/rk3326/BoardConfig_robot32.mk
+++ b/rk3326/BoardConfig_robot32.mk
@@ -37,8 +37,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3326/BoardConfig_robot64.mk b/rk3326/BoardConfig_robot64.mk
index e483274..2705dd5 100755
--- a/rk3326/BoardConfig_robot64.mk
+++ b/rk3326/BoardConfig_robot64.mk
@@ -36,8 +36,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3326/BoardConfig_robot64_no_gpu.mk b/rk3326/BoardConfig_robot64_no_gpu.mk
index 84675d2..4974012 100755
--- a/rk3326/BoardConfig_robot64_no_gpu.mk
+++ b/rk3326/BoardConfig_robot64_no_gpu.mk
@@ -37,8 +37,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config: /oem/dueros/aispeech/iflytekSDK/CaeDemo_VAD/smart_voice
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3328/BoardConfig.mk b/rk3328/BoardConfig.mk
index e46a2bb..8859978 100755
--- a/rk3328/BoardConfig.mk
+++ b/rk3328/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3328/BoardConfig_debian.mk b/rk3328/BoardConfig_debian.mk
index 1ce7dce..d7a23f1 100755
--- a/rk3328/BoardConfig_debian.mk
+++ b/rk3328/BoardConfig_debian.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3399/BoardConfig.mk b/rk3399/BoardConfig.mk
index 70788fb..6a90122 100755
--- a/rk3399/BoardConfig.mk
+++ b/rk3399/BoardConfig.mk
@@ -36,8 +36,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3399/BoardConfig_debian.mk b/rk3399/BoardConfig_debian.mk
index 12d27a9..2057a9e 100755
--- a/rk3399/BoardConfig_debian.mk
+++ b/rk3399/BoardConfig_debian.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3399pro-npu-multi-cam/BoardConfig.mk b/rk3399pro-npu-multi-cam/BoardConfig.mk
index 2262f74..9d1b1cb 100755
--- a/rk3399pro-npu-multi-cam/BoardConfig.mk
+++ b/rk3399pro-npu-multi-cam/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=
 export RK_OEM_FS_TYPE=
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=
 #OEM config
 export RK_OEM_DIR=
 #userdata config
diff --git a/rk3399pro-npu/BoardConfig.mk b/rk3399pro-npu/BoardConfig.mk
index 83ad457..c12a397 100755
--- a/rk3399pro-npu/BoardConfig.mk
+++ b/rk3399pro-npu/BoardConfig.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=
 export RK_OEM_FS_TYPE=
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=
 #OEM config
 export RK_OEM_DIR=
 #userdata config
diff --git a/rk3399pro/BoardConfig.mk b/rk3399pro/BoardConfig.mk
index badcee6..3fb66e2 100755
--- a/rk3399pro/BoardConfig.mk
+++ b/rk3399pro/BoardConfig.mk
@@ -36,8 +36,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config
diff --git a/rk3399pro/BoardConfig_debian.mk b/rk3399pro/BoardConfig_debian.mk
index 0818283..288fddd 100755
--- a/rk3399pro/BoardConfig_debian.mk
+++ b/rk3399pro/BoardConfig_debian.mk
@@ -34,8 +34,6 @@ export RK_ROOTFS_IMG=rockdev/rootfs.${RK_ROOTFS_TYPE}
 export RK_OEM_FS_TYPE=ext2
 # Set userdata partition type, including ext2, fat
 export RK_USERDATA_FS_TYPE=ext2
-# Set flash type. support <emmc, nand, spi_nand, spi_nor>
-export RK_STORAGE_TYPE=emmc
 #OEM config
 export RK_OEM_DIR=oem_normal
 #userdata config