diff --git a/.cargo/config b/.cargo/config
index 8255437e27dbb028763a02b953b2ed35d0e2a847..d7f342049bba2c9c7dc247787d0e505f5d3eea70 100644
--- a/.cargo/config
+++ b/.cargo/config
@@ -1,3 +1,3 @@
 [build]
-target = "aarch64-tx2.json"
+target = "aarch64.json"
 rustflags = ["-C", "llvm-args=-global-isel=false"]
diff --git a/.gitignore b/.gitignore
index ebb81a74e5edae09f8b21f62af028b1bc0366321..465bf760f76b05693be44121e6bf1d03940b899f 100644
--- a/.gitignore
+++ b/.gitignore
@@ -19,4 +19,4 @@ build/
 pi4_upload_release
 *.img
 *.dts
-*.dtb
+/*.dtb
diff --git a/README.ch.md b/README.ch.md
index 7f17aa4b97cee0e65f8250cfde2bac727e5873e7..3d47ddfd091aae89eddbeda435eeec8b6b5c0e45 100644
--- a/README.ch.md
+++ b/README.ch.md
@@ -67,6 +67,18 @@ insmod tools/shyper.ko
 sudo tools/shyper system daemon [mediated-cfg.json] &
 ```
 
+mediated-cfg.json用于配置其他guest VM的virtio中介磁盘，示例如下：
+
+```
+{
+    "mediated": [
+        "/dev/sda2",
+        "/dev/nvme0n1p2",
+        "~/vm0.img"
+    ]
+}
+```
+
 **Step 3**: 通过配置文件来配置一个客户虚拟机
 
 ```bash
diff --git a/README.md b/README.md
index 94d1f8d1c6a91cc2e38a19a3c89c6ddb4294301d..92a3491cb319e32842a3c9ec45c4e11a129a72fa 100644
--- a/README.md
+++ b/README.md
@@ -61,6 +61,18 @@ insmod tools/shyper.ko
 sudo tools/shyper system daemon [mediated-cfg.json] &
 ```
 
+mediated-cfg.json is used for guest VM as virtio block. For example:
+
+```
+{
+    "mediated": [
+        "/dev/sda2",
+        "/dev/nvme0n1p2",
+        "~/vm0.img"
+    ]
+}
+```
+
 **Step 3**: Configure a VM through profile
 
 ```bash
diff --git a/gdb/aarch64.gdb b/gdb/aarch64.gdb
index c0df4c0bfb32a20f67ea813fe92bbddec3f8d65f..35130f1a8e901d5c815aedc510a6dd9cf51a9398 100644
--- a/gdb/aarch64.gdb
+++ b/gdb/aarch64.gdb
@@ -1,5 +1,5 @@
 target remote 127.0.0.1:1234
-file target/aarch64-qemu/debug/rust_shyper
+file target/aarch64/debug/rust_shyper
 break *0x40080000
 display/i $pc
 set confirm off
diff --git a/image/pi4_fin.dtb b/image/pi4_fin.dtb
new file mode 100644
index 0000000000000000000000000000000000000000..d855798972284675732077a5ff19d80a5acbdbc9
Binary files /dev/null and b/image/pi4_fin.dtb differ
diff --git a/tools/shyper_pi4.ko b/tools/shyper_pi4.ko
new file mode 100644
index 0000000000000000000000000000000000000000..8f3657dc760bb5c80b3ade5ba3c14afa3ba5c16f
Binary files /dev/null and b/tools/shyper_pi4.ko differ