diff --git a/.github/workflows/CrossBuild.yml b/.github/workflows/CrossBuild.yml
index fc6d51d0..f2efe176 100644
--- a/.github/workflows/CrossBuild.yml
+++ b/.github/workflows/CrossBuild.yml
@@ -3,9 +3,9 @@ name: Cross-Build
 
 on:
   push:
-    branches-ignore: [ master ]
+    branches-ignore: [ master ethernet_idf4.3]
   pull_request:
-    branches-ignore: [ master ]
+    branches-ignore: [ master ethernet_idf4.3 ]
 
 jobs:
   job1:
diff --git a/.github/workflows/esp-idf-v4.3-build.yml b/.github/workflows/esp-idf-v4.3-build.yml
new file mode 100644
index 00000000..d3a87bcf
--- /dev/null
+++ b/.github/workflows/esp-idf-v4.3-build.yml
@@ -0,0 +1,156 @@
+# This is a basic workflow to help you get started with Actions
+name: Cross-Build
+
+on:
+  push:
+    branches: [ ethernet_idf4.3 ]
+  pull_request:
+    branches-ignore: [ ethernet_idf4.3 ]
+
+jobs:
+  job1:
+    name: Build Number
+    runs-on: ubuntu-latest
+    outputs:
+      build_number: ${{ steps.buildnumber.outputs.build_number }}
+    steps:
+    - name: Generate common build number
+      id: buildnumber
+      uses: einaregilsson/build-number@v3
+      with:
+        token: ${{secrets.github_token}}
+  build:
+    runs-on: ubuntu-latest
+    needs: job1
+    strategy:
+      max-parallel: 1
+      matrix:
+        node: [I2S-4MFlash, SqueezeAmp]
+        depth: [16, 32]
+    steps:
+    - name: Set target name
+      run: |
+        echo "TARGET_BUILD_NAME=${{ matrix.node }}" >> $GITHUB_ENV
+        echo "build_version_prefix=1." >> $GITHUB_ENV
+    - uses: actions/checkout@v2
+      with:
+        fetch-depth: 15
+        submodules: true
+    - name: Cache build
+      id: cache-build
+      uses: actions/cache@v2
+      with:
+        path: |
+          build
+          /var/lib/docker
+        key: idf4.3-${{ runner.os }}-${{ matrix.node }}-${{ matrix.depth }}
+    - name: Set build parameters
+      run: |
+        git update-index --chmod=+x ./server_certs/getcert.sh
+        cd server_certs;./getcert.sh;cat github.pem;cd ..
+        shopt -s nocasematch
+        branch_name="${GITHUB_REF//refs\/heads\//}"
+        branch_name="${branch_name//[^a-zA-Z0-9\-~!@_\.]/}"
+        BUILD_NUMBER=${{ needs.job1.outputs.build_number }}
+        echo "BUILD_NUMBER=${BUILD_NUMBER}" >> $GITHUB_ENV
+        tag="${TARGET_BUILD_NAME}.${{matrix.depth}}.${BUILD_NUMBER}.${branch_name}"
+        echo "tag=${tag}" >> $GITHUB_ENV
+        last_commit="$(git log --pretty=format:'%s' --max-count=1)"
+        if [[ "$last_commit" =~ .*"Release".* ]]; then echo "release_flag=1" >> $GITHUB_ENV; else echo "release_flag=0" >> $GITHUB_ENV; fi
+        name="1.${BUILD_NUMBER}-${{matrix.depth}}#v4.0#${TARGET_BUILD_NAME}#${branch_name}"
+        artifact_prefix="squeezelite-esp32-${branch_name}-${TARGET_BUILD_NAME}-${{matrix.depth}}-${build_version_prefix}${BUILD_NUMBER}"
+        artifact_file_name="${artifact_prefix}.zip"
+        artifact_bin_file_name="${artifact_prefix}.bin"
+        echo "name=${name}" >> $GITHUB_ENV
+        echo "last_commit=${last_commit}" >> $GITHUB_ENV
+        echo "artifact_file_name=${artifact_file_name}" >> $GITHUB_ENV
+        echo "PROJECT_VER=${TARGET_BUILD_NAME}-${{ steps.buildnumber.outputs.build_number }} " >> $GITHUB_ENV
+        echo "artifact_bin_file_name=${artifact_bin_file_name}" >> $GITHUB_ENV
+        description=""
+        description=${description}$'------------------------------\n### Revision Log\n\n'
+        description="$description$(git log --pretty=format:'%h %s (%cI) <%an>' --abbrev-commit --max-count=15 | sed --r 's/(^[\*]+)/\\\1/g') "        
+        echo 'description<<~EOD' >> $GITHUB_ENV
+        echo ${description}>> $GITHUB_ENV
+        echo '~EOD' >> $GITHUB_ENV        
+        echo ####### 
+        echo ####### Environment
+        echo ####### 
+        env
+        echo ####### 
+        echo ####### GITHUB ENV
+        echo ####### 
+        cat $GITHUB_ENV
+    - name: Build the firmware
+      run: |
+        env | grep "artifact\|tag\|GITHUB\|version\|NUMBER\|TARGET" >${TARGET_BUILD_NAME}-env.txt
+        echo "${tag}" >version.txt
+        docker pull espressif/idf:release-v4.3
+        docker info 
+        docker run --env-file=${TARGET_BUILD_NAME}-env.txt  -v $PWD:/project -w /project sle118/idf:release-v4.0 /bin/bash -c "cp build-scripts/${TARGET_BUILD_NAME}-sdkconfig.defaults sdkconfig  && idf.py build -DDEPTH=${{ matrix.depth }} -DBUILD_NUMBER=${BUILD_NUMBER}-${{ matrix.depth }} && zip -r build_output.zip build && zip build/${artifact_file_name} partitions*.csv build/*.bin build/bootloader/bootloader.bin build/partition_table/partition-table.bin build/flash_project_args build/size_*.txt"
+    # - name: Build Mock firmware
+    #   run: |
+    #     mkdir -p build
+    #     cd build
+    #     mkdir -p partition_table
+    #     mkdir -p bootloader
+    #     echo "mock content"> squeezelite.bin
+    #     echo "mock content"> recovery.bin
+    #     echo "mock content"> ./bootloader/bootloader.bin
+    #     echo "mock content"> ./partition_table/partition-table.bin 
+    #     echo "mock content"> flash_project_args 
+    #     echo "mock content"> size_comp1.txt
+    #     echo "mock content"> size_comp2.txt
+    #     echo "mock content"> ../partitions.csv
+    - uses: actions/upload-artifact@v2
+      with:
+        name: ${{ env.artifact_file_name }}
+        path: |
+          build/*.bin
+          build/bootloader/bootloader.bin
+          build/partition_table/partition-table.bin 
+          build/flash_project_args 
+          build/size_comp1.txt
+          build/size_comp2.txt
+          partitions.csv
+          sdkconfig
+          server_certs/github.pem
+          build_output.zip
+    - uses: actions/upload-artifact@v2
+      with:
+        name: ${{ env.artifact_bin_file_name }}
+        path: |
+          build/squeezelite.bin
+    - name: Create Release
+      if: env.release_flag == 1     
+      id: create_release
+      uses: actions/create-release@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # This token is provided by Actions, you do not need to create your own token
+      with:
+        tag_name: ${{ env.tag }}
+        release_name: ${{ env.name }}
+        body: ${{ env.description }}
+        draft: false
+        prerelease: true
+    - name: Upload Release Asset - Squeezelite binary file
+      if: env.release_flag == 1         
+      id: upload-release-asset 
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps 
+        asset_path: build/squeezelite.bin
+        asset_name: ${{ env.artifact_bin_file_name }}
+        asset_content_type: application/octet-stream        
+    - name: Upload Release Asset - Zip file
+      if: env.release_flag == 1         
+      id: upload-release-asset-zip
+      uses: actions/upload-release-asset@v1
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      with:
+        upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps 
+        asset_path: build/${{ env.artifact_file_name }}
+        asset_name: ${{ env.artifact_file_name }}
+        asset_content_type: application/octet-stream          
\ No newline at end of file