diff --git a/appveyor.yml b/appveyor.yml
index 10165e5f..3cf51c2b 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -9,46 +9,49 @@ os: Visual Studio 2015
 shallow_clone: true
 clone_depth: 1
 
+# avoid building 32-bit if 64-bit failed already
+matrix:
+  fast_finish: true
+
 environment:
+  APPVEYOR_SAVE_CACHE_ON_ERROR: true
   MSYS2_PATH_TYPE: inherit
   CHERE_INVOKING: enabled_from_arguments
   matrix:
   - MSYSTEM: MINGW64
-    MSYS_PACKAGES: mingw-w64-x86_64-boost mingw-w64-x86_64-miniupnpc
-    MSYS_BITNESS: 64
   - MSYSTEM: MINGW32
-    MSYS_PACKAGES: mingw-w64-i686-boost mingw-w64-i686-miniupnpc
-    MSYS_BITNESS: 32
+
+cache:
+  - c:\msys64\var\cache\pacman\pkg\
 
 install:
-# install new signing keyring
-- c:\msys64\usr\bin\bash -lc "curl -O https://mirror.selfnet.de/msys2/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz"
-- c:\msys64\usr\bin\bash -lc "curl -O https://mirror.selfnet.de/msys2/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig"
-- c:\msys64\usr\bin\bash -lc "pacman-key --verify msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig"
+# install new signing keyring	
+- c:\msys64\usr\bin\bash -lc "curl -O https://mirror.selfnet.de/msys2/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz"	
+- c:\msys64\usr\bin\bash -lc "curl -O https://mirror.selfnet.de/msys2/msys/x86_64/msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig"	
+- c:\msys64\usr\bin\bash -lc "pacman-key --verify msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz.sig"	
 - c:\msys64\usr\bin\bash -lc "pacman --noconfirm -U msys2-keyring-r21.b39fb11-1-any.pkg.tar.xz"
-# disable inaccessible miror (something block sed from changing files, so rewrite them) - https://github.com/msys2/MINGW-packages/issues/7084
-- c:\msys64\usr\bin\bash -lc "echo 'Server = https://mirror.yandex.ru/mirrors/msys2/mingw/x86_64/' > /etc/pacman.d/mirrorlist.mingw64"
-- c:\msys64\usr\bin\bash -lc "echo 'Server = https://mirror.yandex.ru/mirrors/msys2/mingw/i686/' > /etc/pacman.d/mirrorlist.mingw32"
-- c:\msys64\usr\bin\bash -lc "echo 'Server = https://mirror.yandex.ru/mirrors/msys2/msys/$arch/' > /etc/pacman.d/mirrorlist.msys"
 # remove packages which can break build
 - c:\msys64\usr\bin\bash -lc "pacman --noconfirm -Rns gcc-fortran gcc mingw-w64-{i686,x86_64}-gcc-ada mingw-w64-{i686,x86_64}-gcc-objc"
 # update runtime
 - c:\msys64\usr\bin\bash -lc "pacman --noconfirm -Syuu"
 # Kill bash before next try
 - taskkill /T /F /IM bash.exe /IM gpg.exe /IM gpg-agent.exe | exit /B 0
-# rewrite mirrorlist again because pacman update can rewrite it
-- c:\msys64\usr\bin\bash -lc "echo 'Server = https://mirror.yandex.ru/mirrors/msys2/mingw/x86_64/' > /etc/pacman.d/mirrorlist.mingw64"
-- c:\msys64\usr\bin\bash -lc "echo 'Server = https://mirror.yandex.ru/mirrors/msys2/mingw/i686/' > /etc/pacman.d/mirrorlist.mingw32"
-- c:\msys64\usr\bin\bash -lc "echo 'Server = https://mirror.yandex.ru/mirrors/msys2/msys/$arch/' > /etc/pacman.d/mirrorlist.msys"
 # update packages and install required
-- c:\msys64\usr\bin\bash -lc "pacman --noconfirm -Syuu ${MSYS_PACKAGES}"
+- c:\msys64\usr\bin\bash -lc "pacman --noconfirm -Syuu $MINGW_PACKAGE_PREFIX-boost $MINGW_PACKAGE_PREFIX-miniupnpc"
 
 build_script:
-- echo MSYSTEM = %MSYSTEM%, bitness = %MSYS_BITNESS%
-- c:\msys64\usr\bin\bash -lc "make USE_UPNP=yes -j3"
-- 7z a -tzip -mx9 -mmt i2pd-mingw-win%MSYS_BITNESS%.zip i2pd.exe
+- c:\msys64\usr\bin\bash -lc "make USE_UPNP=yes DEBUG=no -j3"
+# prepare archive for uploading
+- set "FILELIST=i2pd.exe README.txt contrib/i2pd.conf contrib/tunnels.conf contrib/certificates contrib/tunnels.d"
+- echo This is development build, use it carefully! For running in portable mode, move all files from contrib directory here. > README.txt
+- 7z a -tzip -mx9 -mmt i2pd-%APPVEYOR_BUILD_VERSION%-%APPVEYOR_REPO_COMMIT:~0,7%-mingw-win%MSYSTEM:~-2%.zip %FILELIST%
+
+after_build:
+- c:\msys64\usr\bin\bash -lc "pacman --noconfirm -Sc"
 
 test: off
 
+deploy: off
+
 artifacts:
-- path: i2pd-mingw-win*.zip
+- path: i2pd-*.zip
diff --git a/build/appveyor-msys2-upgrade.bash b/build/appveyor-msys2-upgrade.bash
deleted file mode 100644
index 20c6af69..00000000
--- a/build/appveyor-msys2-upgrade.bash
+++ /dev/null
@@ -1,10 +0,0 @@
-set -e -x
-
-base_url='http://repo.msys2.org/msys/x86_64/'
-packages="libzstd-1.4.4-2-x86_64.pkg.tar.xz pacman-5.2.1-6-x86_64.pkg.tar.xz zstd-1.4.4-2-x86_64.pkg.tar.xz"
-for p in $packages
-do
-    curl "${base_url}$p" -o "$p"
-done
-pacman -U --noconfirm $packages
-rm -f $packages