diff --git a/appveyor.yml b/appveyor.yml
index a5c34c7..389fb3b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -2,59 +2,72 @@
 branches:
   only:
     - master
-    - prelease
-    - ci
-    - appveyor
 
 # https://www.appveyor.com/docs/build-environment/#using-multiple-images-for-the-same-build
 # APPVEYOR_BUILD_WORKER_IMAGE is used in environment matrix, image is not
 environment:
   matrix:
-  - _CC: VS2019
-    _PLATFORM: desktop
-    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-  - _CC: VS2019
-    _PLATFORM: store
-    APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
-  - _CC: MINGW
+  - _ARCH: arm64
+    _CC: MINGW
     _PLATFORM: desktop
     _CACHE: msys64
-  - _ARCH: arm
-    _CC: VS2013
-    _PLATFORM: phone
-  - _ARCH: x86
-    _CC: VS2013
-    _PLATFORM: store
-  - _ARCH: x86
-    _CC: VS2013
-    _PLATFORM: desktop
-
+  
 matrix:
   fast_finish: false
+  
+cache:
+  - C:\%_CACHE%\var\cache\pacman\pkg -> appveyor.yml
 
 init:
   - echo NUMBER_OF_PROCESSORS=%NUMBER_OF_PROCESSORS%
   - echo PROCESSOR_IDENTIFIER=%PROCESSOR_IDENTIFIER%
   - set MSYS2_PATH_TYPE=inherit
   - set MSYS2_DIR=C:\msys64
-  - set
-
+  - set USE_TOOLCHAIN=clang
+  - set NDK_HOST=windows
+  - set NDK_VERSION=r21d
 #https://stackoverflow.com/questions/37627248/how-to-split-a-command-over-multiple-lines-in-appveyor-yml
 
 install:
 # can not starts with %
-  - git submodule update --init
-  - if /i %_CC%==MinGW (
-      C:\msys64\usr\bin\pacman -Syyuu --noconfirm &&
-      C:\msys64\usr\bin\pacman -Suu --noconfirm   &&
-      C:\msys64\usr\bin\pacman -S --noconfirm --needed mingw-w64-i686-gcc mingw-w64-x86_64-gcc &&
-      C:\msys64\usr\bin\pacman -Sc --noconfirm
-    )
-  - C:\msys64\usr\bin\pacman -S --noconfirm --needed diffutils patch pkg-config nasm yasm
-  - set FF_BRANCH=%FF_VERSION%
-  - if not [%FF_BRANCH%]==[master] set FF_BRANCH=release/%FF_VERSION%
-  - git clone -b %FF_BRANCH% --depth 1 --no-tags https://git.ffmpeg.org/ffmpeg.git ffmpeg-%FF_VERSION%
-  - if /i %_PLATFORM%==desktop (
+- git submodule update --init
+
+# - curl -O http://repo.msys2.org/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz
+# - curl -O http://repo.msys2.org/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig
+# - C:\msys64\usr\bin\bash.exe pacman-key --verify msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig
+- C:\msys64\usr\bin\pacman -U --noconfirm http://repo.msys2.org/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz
+# install latest pacman
+- C:\msys64\usr\bin\pacman -U --noconfirm http://repo.msys2.org/msys/x86_64/pacman-5.2.2-1-x86_64.pkg.tar.xz
+- C:\msys64\usr\bin\pacman -U --noconfirm http://repo.msys2.org/msys/x86_64/pacman-mirrors-20200329-1-any.pkg.tar.xz
+# - C:\msys64\usr\bin\pacman -U --noconfirm http://repo.msys2.org/mingw/x86_64/mingw-w64-x86_64-db-6.0.19-3-any.pkg.tar.xz
+# - C:\msys64\usr\bin\pacman -U --noconfirm http://repo.msys2.org/msys/x86_64/msys.db.tar.gz 
+# - C:\msys64\usr\bin\pacman -U --noconfirm http://repo.msys2.org/msys/x86_64/gnupg-2.2.20-1-x86_64.pkg.tar.xz
+# - C:\msys64\usr\bin\pacman -U --noconfirm http://repo.msys2.org/msys/x86_64/libgpgme-1.14.0-1-x86_64.pkg.tar.zst
+
+
+# - C:\msys64\usr\bin\pacman -U --noconfirm http://repo.msys2.org/mingw/x86_64/mingw64.db
+# - C:\msys64\usr\bin\pacman -U --noconfirm http://repo.msys2.org/mingw/x86_64/mingw64.db.tar.gz
+
+- C:\msys64\usr\bin\pacman -Su --noconfirm
+- C:\msys64\usr\bin\pacman -Su --noconfirm
+ 
+ # install packages
+- C:\msys64\usr\bin\pacman -Su --noconfirm --needed VCS
+
+- C:\msys64\usr\bin\pacman -Su --noconfirm --needed base-devel mingw-w64-x86_64-toolchain mingw-w64-cross-toolchain
+- C:\msys64\usr\bin\pacman -Su --noconfirm --needed mingw-w64-x86_64-clang
+- C:\msys64\usr\bin\pacman -Su --noconfirm --needed wget diffutils patch pkg-config nasm yasm
+# - C:\msys64\usr\bin\pacman -Scc --noconfirm
+
+- curl -O http://dl.google.com/android/repository/android-ndk-%NDK_VERSION%-%NDK_HOST%-x86_64.zip
+- 7z x -y android-ndk-%NDK_VERSION%-%NDK_HOST%-x86_64.zip -oandroid-ndk
+- set ANDROID_NDK=%CD%\android-ndk
+
+- set FF_VERSION=master
+- set FF_BRANCH=%FF_VERSION%
+- if not [%FF_BRANCH%]==[master] set FF_BRANCH=release/%FF_VERSION%
+- git clone -b %FF_BRANCH% --no-tags https://git.ffmpeg.org/ffmpeg.git ffmpeg-%FF_BRANCH%
+- if /i %_PLATFORM%==desktop (
       appveyor DownloadFile "https://sourceforge.net/projects/avbuild/files/dep/dep.7z/download" -FileName dep.7z &&
       7z x -y dep.7z -otools &&
       set PKG_CONFIG_PATH_MFX=%CD%\tools\%_CC%%_ARCH%\lib\pkgconfig)
@@ -67,18 +80,17 @@ before_build:
 
 build_script:
 # V=1 to check libmfx error, but the error disappears if V=1. WTF
-  - if /i not %_CC%==MinGW if /i not %_PLATFORM%==store set V=1
-  - if /i %_CC%==MinGW (
-      set VC_BUILD=false&&
-      set MSYS2_PATH_TYPE=&&
-      C:\msys64\usr\bin\bash.exe --login avbuild.sh mingw
-    ) else (
-      set BUILD_NOW=true&&
-      tools\vcbuild.bat %_CC% %_PLATFORM% %_ARCH% all
-    )
+#  - if /i not %_CC%==MinGW if /i not %_PLATFORM%==store set V=1
+# - ./avbuild.sh android arm64
+- set VC_BUILD=false
+- C:\msys64\usr\bin\bash.exe --login avbuild.sh android arm64
+ #   ) else (
+ #     set BUILD_NOW=true&&
+ #     tools\vcbuild.bat %_CC% %_PLATFORM% %_ARCH% all
+ #   )
 
 after_build:
-  - set SDK_NAME=ffmpeg-%FF_VERSION%-%_PLATFORM%-%_CC%%_ARCH%%CONFIG_SUFFIX%
+  - set SDK_NAME=ffmpeg-%FF_VERSION%-%_PLATFORM%-%_CC%%_ARCH%
   - move sdk* %SDK_NAME%
   - 7z a %SDK_NAME%.7z %SDK_NAME%
 
@@ -87,12 +99,3 @@ test: off
 artifacts:
   - path: '%SDK_NAME%.7z'  # relative to repo root
 
-deploy:
-  provider: FTP
-  protocol: sftp
-  host: frs.sourceforge.net
-  username: novesky
-  password:
-    secure: 2mQg4oxdX8S7rMJz2TCGGg==
-  folder: /home/frs/project/avbuild/windows-%_PLATFORM% # why always relative path even if starts with / ? I have to make a link home/frs/project/avbuild/xxx => /home/frs/project/avbuild/xxx
-  active_mode: false
\ No newline at end of file
diff --git a/config-lite.sh b/config.sh
similarity index 100%
rename from config-lite.sh
rename to config.sh