diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 567b3e88..895e0197 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -1,10 +1,8 @@
 name: Update
 on:
-  workflow_call:
-  # schedule:
-  #   - cron: "0 0 * * 1"
-  # push:
-  #   branches: [main, master]
+  workflow_dispatch:
+  schedule:
+    - cron: "0 0 * * 1"
 
 env:
   CARGO_INCREMENTAL: 1
@@ -17,31 +15,87 @@ env:
   # allow modify source for bindings generator:
   PD_BUILD_PREBUILT: 1
 
+permissions:
+  contents: write
+
 jobs:
-  pre-gen:
-    if: false # not ready yet
+  new-branch:
+    runs-on: ubuntu-latest
     defaults:
       run:
         shell: bash
+    steps:
+      - name: Checkout Master
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.repository.default_branch }}
+
+      - name: Create Branch
+        id: branch
+        uses: peterjgrainger/action-create-branch@v2.3.0
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          branch: refs/heads/api/sys/pre-build
+          # ${{ github.event.pull_request.head.sha }}
+      - name: Created
+        run: 'echo "Created: ${{ steps.branch.outputs.created }}"'
+
+      # TODO: do not reset, just rebase to master
+      # just try `git pull origin ${{github.event.repository.default_branch}}`
+      # and if failed => run ReSync
 
+      # if not created => rebase to master
+      - name: ReSync Branch
+        if: ${{ steps.branch.outputs.created == 'false' }}
+        uses: Joao208/resync-branch@1.5.0
+        with:
+          PERSONAL_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          BRANCH_NAME: api/sys/pre-build
+          DEFAULT_BRANCH: ${{github.event.repository.default_branch}}
+
+  pre-gen:
+    name: Gen (${{ matrix.os }}, ${{ matrix.features.v }})
+    defaults:
+      run:
+        shell: bash
+    needs: new-branch
     runs-on: ${{ matrix.os }}
     strategy:
-      fail-fast: false
+      fail-fast: true
       matrix:
         os:
           - macos-latest
           - ubuntu-latest
-          - windows-latest
+          # - windows-latest
         sdk:
           - latest
         features:
-          - --features=bindings-documentation,bindings-derive-debug
-          - --features=bindings-documentation,bindings-derive-default,bindings-derive-eq,bindings-derive-copy,bindings-derive-debug,bindings-derive-hash,bindings-derive-ord,bindings-derive-partialeq,bindings-derive-partialord
+          - {
+              v: --features=bindings-documentation,
+              bindings-derive-debug,
+              name: default,
+            }
+          - {
+              v: --features=bindings-documentation,
+              bindings-derive-default,
+              bindings-derive-eq,
+              bindings-derive-copy,
+              bindings-derive-debug,
+              bindings-derive-hash,
+              bindings-derive-ord,
+              bindings-derive-partialeq,
+              bindings-derive-partialord,
+              name: full,
+            }
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
+        with:
+          ref: api/sys/pre-build
+
       - name: Cache
-        uses: Swatinem/rust-cache@v1
+        uses: Swatinem/rust-cache@v2.6.2
 
       - name: Install Playdate SDK ${{ matrix.sdk }}
         id: sdk
@@ -56,27 +110,76 @@ jobs:
 
       - name: Host
         run: |
-          cargo build -p=playdate-sys ${{ matrix.features }} -vv
-          cargo build -p=playdate-sys ${{ matrix.features }} --release
+          cargo build -p=playdate-sys ${{ matrix.features.v }} -vv
+          cargo build -p=playdate-sys ${{ matrix.features.v }} --release
 
       - name: Device
-        if: ${{ matrix.os }} == "ubuntu-latest"
+        if: ${{ matrix.os == 'ubuntu-latest' }}
         run: |
-          cargo build -p=playdate-sys ${{ matrix.features }} --target=thumbv7em-none-eabihf
-          cargo build -p=playdate-sys ${{ matrix.features }} --target=thumbv7em-none-eabihf --release
+          cargo build -p=playdate-sys ${{ matrix.features.v }} --target=thumbv7em-none-eabihf
+          cargo build -p=playdate-sys ${{ matrix.features.v }} --target=thumbv7em-none-eabihf --release
 
       - name: Format
-        run: rustfmt ./api/sys/gen/*.rs
+        run: rustfmt api/sys/gen/*.rs
 
-      - name: Test (dev)
+      - name: Test (host)
+        # env: # uncomment when all bindings for min-supported-SDK will be there
+        #   IGNORE_EXISTING_PLAYDATE_SDK: 1
         run: |
-          cargo test -p=playdate-sys ${{ matrix.features }} --all-targets
-          cargo build -p=playdate-sys ${{ matrix.features }} --target=thumbv7em-none-eabihf -Zbuild-std=core,alloc
+          cargo test -p=playdate-sys ${{ matrix.features.v }}
+          cargo test -p=playdate-sys ${{ matrix.features.v }} --release
 
-      - name: Test (release)
+      - name: Test (device)
+        if: ${{ matrix.os == 'ubuntu-latest' }}
+        # env: # uncomment when all bindings for min-supported-SDK will be there
+        #   IGNORE_EXISTING_PLAYDATE_SDK: 1
         run: |
-          cargo test -p=playdate-sys ${{ matrix.features }} --all-targets --release
-          cargo build -p=playdate-sys ${{ matrix.features }} --target=thumbv7em-none-eabihf -Zbuild-std=core,alloc --release
-      # TODO: build tests for --target=thumbv7em-none-eabihf with -Zbuild-std=core,alloc and mb. restricted-std
+          cargo build -p=playdate-sys ${{ matrix.features.v }} --target=thumbv7em-none-eabihf -Zbuild-std=core,alloc
+          cargo build -p=playdate-sys ${{ matrix.features.v }} --target=thumbv7em-none-eabihf -Zbuild-std=core,alloc --release
+
+      - name: Commit
+        id: commit
+        uses: EndBug/add-and-commit@v9
+        with:
+          add: ./api/sys/gen/*.rs
+          author_name: Alex Koz
+          author_email: boozook@users.noreply.github.com
+          committer_name: Update Workflow
+          message: Automated build pre-built bindings
+          pull: "--rebase --autostash"
+          push: true
 
-      # TODO: compare, create PR
+      - name: Committed
+        run: |
+          echo "Committed: ${{ steps.commit.outputs.committed }}"
+          echo "Pushed: ${{ steps.commit.outputs.pushed }}"
+          echo "SHA: ${{ steps.commit.outputs.commit_sha }}"
+
+  pr:
+    name: Make PR
+    needs: pre-gen
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        shell: bash
+    permissions:
+      pull-requests: write
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: api/sys/pre-build
+
+      - name: Create PR
+        uses: TreTuna/sync-branches@1.4.0
+        with:
+          GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+          FROM_BRANCH: refs/heads/api/sys/pre-build
+          TO_BRANCH: ${{ github.event.repository.default_branch }}
+          PULL_REQUEST_TITLE: Update pre-built bindings
+          PULL_REQUEST_BODY: |
+            Pre-built bindings just updated.
+            Don't forget to bump version and make release.
+          PULL_REQUEST_IS_DRAFT: false
+          CONTENT_COMPARISON: true
+          REVIEWERS: '["boozook"]'