diff --git a/README.md b/README.md
index 4d02814..c6e32dc 100644
--- a/README.md
+++ b/README.md
@@ -16,20 +16,48 @@ Here we take UC-8100 as illustration:
 
 #### 1. Install and modify all the applications and configurations you want on the UC-8100
 
-#### 2. Dump the image by `dd` command and save it to another Linux PC with enough storage
-```
-# dd if=<device> | ssh <Username of Linux PC>@<IP address of Linux PC> dd of=<dumped_image_file>
-```
-
-The device can be checked by `lsblk` command:
+#### 2. Dump the image by `dd` command. There are two methods to copy the whole system
+
+- 2.a - Dump via ethernet and save it to another Linux PC with enough storage
+	```
+	# dd if=<device> | ssh <Username of Linux PC>@<IP address of Linux PC> dd of=<dumped_image_file>
+	```
+	
+	The device can be checked by `lsblk` command:
+	
+	![lsblk](/lsblk.PNG)
+	
+	In this example, root is mounted at "/dev/mmcblk0p2", so the device is "/dev/mmcblk0":
+	
+	```
+	# dd if=/dev/mmcblk0 | ssh user@192.168.3.100 dd of=/tmp/uc8100_dump.img
+	```
+
+- 2.b Dump the image to the local storage such as USB disk
+	```
+	# dd if=<device> of=<dumped_image_file>
+	```
+	
+	![lsblk-usb](/lsblk_usb.PNG)
+	
+	In this example, root is mounted at "/dev/mmcblk2p2", so the device is "/dev/mmcblk2":
+	
+	```
+	# dd if=/dev/mmcblk2 of=/media/usb/uc8100_dump.img
+	```
+
+	Most USB disk file system is FAT32, split image is recommend
+
+	```
+	dd if=/dev/mmcblk2 bs=1M | split --verbose -b 1G - /media/usb/uc8100_dump.img.
+	```
+
+	Merge on laptop
+
+	```
+	cat /media/usb/uc8100_dump.img.* | dd of=/tmp/uc8100_dump.img
+	```	
 
-![lsblk](/lsblk.PNG)
-
-In this example, root is mounted at "/dev/mmcblk0p2", so the device is "/dev/mmcblk0":
-
-```
-# dd if=/dev/mmcblk0 | ssh user@192.168.3.100 dd of=/tmp/uc8100_dump.img
-```
 
 #### 3. Clone or download this repository on your Linux PC
 ```
@@ -58,6 +86,13 @@ The output image file will be named as "resize.img"
 	* UC-8100-ME series:
 
 		including UC-8112-ME-T-LX, UC-8112-ME-T-LX1, UC-8112-ME-T-LX-US-LTE, UC-8112-ME-T-US-LTE-LX1
+	* UC-8100A-ME series:
+
+		including UC-8112A-ME-T-LX, UC-8112-ME-LX
+	* UC-8410A series:
+
+		including UC-8410A-LX, UC-8410A-NW-LX, UC-8410A-T-LX, UC-8410A-NW-T-LX
+
 * Type B
 	* UC-2100 series:
 
@@ -68,3 +103,9 @@ The output image file will be named as "resize.img"
 	* UC-5100 series:
 
 		including UC-5101-LX, UC-5101-T-LX, UC-5102-LX, UC-5102-T-LX, UC-5111-LX, UC-5111-T-LX, UC-5112-LX, UC-5112-T-LX
+	* UC-8100A-ME series:
+
+		including UC-8112A-ME-T-LX, UC-8112A-ME-T-US, UC-8112A-ME-T-EU, UC-8112A-ME-T-AP
+	* UC-8200 series:
+
+		including UC-8210-T-LX, UC-8210-T-LX-S, UC-8220-T-LX, UC-8220-T-LX-US-S ,UC-8220-T-LX-EU-S ,UC-8220-T-LX-AP-S
diff --git a/lsblk_usb.PNG b/lsblk_usb.PNG
new file mode 100755
index 0000000..ece08d2
Binary files /dev/null and b/lsblk_usb.PNG differ