diff --git a/README.md b/README.md
index e58ca23..4fb5a40 100644
--- a/README.md
+++ b/README.md
@@ -6,13 +6,13 @@
 ### CHR image is both support BIOS and UEFI boot mode.
 ### Support online upgrade.
 
-![](install.png)
-![](routeros.png)
+![](image/install.png)
+![](image/routeros.png)
 
 ### license RouterOS for x86.
-![](x86.png)
+![](image/x86.png)
 ### license RouterOS for chr, Support online renew license.
-![](chr.png)
+![](image/chr.png)
 
 ## How to use shell
     install option-{version}.npk package
diff --git a/README_CN.md b/README_CN.md
index 5547961..dc4eebe 100644
--- a/README_CN.md
+++ b/README_CN.md
@@ -6,13 +6,13 @@
 ### CHR镜像文件同时支持BIOS和UEFI启动模式
 ### 支持在线升级
 
-![](install.png)
-![](routeros.png)
+![](image/install.png)
+![](image/routeros.png)
 
 ### x86模式授权许可
-![](x86.png)
+![](image/x86.png)
 ### chr模式授权许可，支持在线授权许可
-![](chr.png)
+![](image/chr.png)
 
 ## 如何使用Shell
     安装 option-{version}.npk 包
diff --git a/chr.png b/image/chr.png
similarity index 100%
rename from chr.png
rename to image/chr.png
diff --git a/install.png b/image/install.png
similarity index 100%
rename from install.png
rename to image/install.png
diff --git a/routeros.png b/image/routeros.png
similarity index 100%
rename from routeros.png
rename to image/routeros.png
diff --git a/x86.png b/image/x86.png
similarity index 100%
rename from x86.png
rename to image/x86.png
diff --git a/mikrotik.ico b/mikrotik.ico
deleted file mode 100644
index 6e31b43..0000000
Binary files a/mikrotik.ico and /dev/null differ
diff --git a/netinstall.py b/netinstall.py
index 009cf45..51bcf18 100644
--- a/netinstall.py
+++ b/netinstall.py
@@ -1,15 +1,4 @@
 import struct,lzma
-# ROUTEROS_BOOT = {
-#     129:{'arch':'power','name':'Powerboot','filter':lzma.FILTER_POWERPC},
-#     130:{'arch':'e500','name':'e500_boot'},
-#     131:{'arch':'mips','name':'Mips_boot'},
-#     135:{'arch':'400','name':'440__boot'},
-#     136:{'arch':'tile','name':'tile_boot'},
-#     137:{'arch':'arm','name':'ARM__boot','filter':lzma.FILTER_ARMTHUMB},
-#     138:{'arch':'mmips','name':'MMipsBoot'},
-#     139:{'arch':'arm64','name':'ARM64__boot','filter':lzma.FILTER_ARMTHUMB},
-#     143:{'arch':'x86_64','name':'x86_64boot'}
-# }
 
 def find_7zXZ_data(data:bytes):
     offset1 = 0
diff --git a/patch.py b/patch.py
index 2107243..0b4c2c3 100644
--- a/patch.py
+++ b/patch.py
@@ -71,38 +71,8 @@ def patch_squashfs(path,key_dict):
                         data = data.replace(old_url,new_url)
                         open(file,'wb').write(data)
 
-
-def patch_elf(data: bytes,key_dict:dict):
-    def find_7zXZ_data(data:bytes):
-        offset1 = 0
-        _data = data
-        while b'\xFD7zXZ\x00\x00\x01' in _data:
-            offset1 = offset1 + _data.index(b'\xFD7zXZ\x00\x00\x01') + 8
-            _data = _data[offset1:]
-        offset1 -= 8
-        offset2 = 0
-        _data = data
-        while b'\x00\x01\x59\x5A' in _data:
-            offset2 = offset2 + _data.index(b'\x00\x01\x59\x5A') + 4
-            _data = _data[offset2:]
-        offset2
-        return data[offset1:offset2] 
-
-    initrd_xz = find_7zXZ_data(data)
-    initrd = lzma.decompress(initrd_xz)
-    new_initrd = initrd  
-    for old_public_key,new_public_key in key_dict.items():
-        if old_public_key in new_initrd:
-            print(f'initramfs public key patched {old_public_key[:16].hex().upper()}...')
-            new_initrd = new_initrd.replace(old_public_key,new_public_key)
-    filters=[{"id": lzma.FILTER_LZMA2, "preset": 9,}] 
-    new_initrd_xz = lzma.compress(new_initrd,check=lzma.CHECK_CRC32,filters=filters)
-    assert len(new_initrd_xz) <= len(initrd_xz),'new initrd xz size is too big'
-    new_initrd_xz = new_initrd_xz.ljust(len(initrd_xz),b'\0')
-    new_data = data.replace(initrd_xz,new_initrd_xz)
-    return new_data
-
 def patch_kernel(data:bytes,key_dict):
+    from netinstall import patch_elf
     if data[:2] == b'MZ':
         print('patching EFI Kernel')
         if data[56:60] == b'ARM\x64':