diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index b58439e36..b80aad7d6 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -1,173 +1,44 @@
-name: Build
+name: Build SeedSigner with Keystone
 
 on:
-  pull_request:
-    # Build on changes to this workflow files in PRs to test proposed changes
-    paths:
-      - '.github/workflows/build.yml'
   push:
     branches:
       - main
-      - dev
+      - keystone-feature
   workflow_dispatch:
-    inputs:
-      os-ref:
-        description: The seedsigner-os ref (tag/branch/sha1) to use
-        default: main
-        required: true
-
-# Increment this number as part of a PR to trigger an image build for the PR
-# trigger = 0
 
 jobs:
   build:
-    name: build
     runs-on: ubuntu-latest
-    # Prevent resource consuming cron triggered runs in forks
-    if: (!github.event.repository.fork || github.event_name == 'workflow_dispatch')
-    strategy:
-      fail-fast: false
-      matrix:
-        target: [ "pi0" ] # , "pi2", "pi02w", "pi4" ] Just build Pi0 to keep within 500mb storage limit for Github free
-    steps:
-      - name: checkout seedsigner-os
-        uses: actions/checkout@v4
-        with:
-          repository: "3rditeration/seedsigner-os"
-          # use the os-ref input parameter in case of workflow_dispatch or default to main in case of cron triggers
-          ref: ${{ github.event_name == 'workflow_dispatch' && github.event.inputs.os-ref || 'main' }}
-          submodules: true
-          path: "seedsigner-os"
-          # get full history + tags for "git describe"
-          fetch-depth: 0
-
-      - name: checkout source
-        uses: actions/checkout@v4
-        with:
-          # ref defaults to repo default-branch=dev (cron) or SHA of event (workflow_dispatch)
-          path: "seedsigner-os/opt/rootfs-overlay/opt"
-          # get full history + tags for "git describe"
-          fetch-depth: 0
-
-      - name: Get and set meta data
-        run: |
-          # The builder_hash (seedsigner-os hash) for the cache action step key
-          echo "builder_hash=$(git -C seedsigner-os rev-parse --short HEAD)"| tee -a $GITHUB_ENV
-
-          # Derive tag based versions, like 0.7.0-40-g0424967 (=$tag-$number-of-commits-since-tag-$short-sha1),
-          # or just e.g. 0.7.0, if we are exactly on a 0.7.0 tagged commit.
-          # --always to fall back to commit sha, if no tag present like in partial forks of the repo
-          os_version="$(git -C seedsigner-os describe --tags --always)"
-          source_version="$(git -C seedsigner-os/opt/rootfs-overlay/opt describe --tags --always)"
 
-          # Combine seedsigner and seedsigner-os version into one version string and squash the versions, if
-          # they are identical: So os_version=0.7.0 + source_version=0.7.0 combine to just only "0.7.0",
-          # whereas os_version=0.6.0-61-g9fafebe + source_version=0.7.0-40-g0424967 combine to "os0.6.0-61-g9fafebe_sw0.7.0-40-g0424967"
-          if [ "${os_version}" = "${source_version}" ]; then
-            # seedsigner + seedsigner_os have the same tag
-            echo "img_version=${source_version}"| tee -a $GITHUB_ENV
-          else
-            echo "img_version=os${os_version}_sw${source_version}"| tee -a $GITHUB_ENV
-          fi
-
-      - name: delete unnecessary files
-        run: |
-          cd seedsigner-os/opt/rootfs-overlay/opt
-          find . -mindepth 1 -maxdepth 1 ! -name src -exec rm -rf {} +
-          ls -la .
-          ls -la src
-
-      - name: restore build cache
-        uses: actions/cache@v4
-        # Caching reduces the build time to ~50% (currently: ~30 mins instead of ~1 hour,
-        # while consuming ~850 MB storage space).
-        with:
-          path: |
-            ~/.buildroot-ccache/
-            seedsigner-os/buildroot_dl
-          key: build-cache-${{ matrix.target }}-${{ env.builder_hash }}
-          restore-keys: |
-            build-cache-${{ matrix.target }}-
-
-      - name: Create build container
-        run: |
-          cd seedsigner-os
-          docker build -t seedsigner-os-build .
-
-      - name: build
-        run: |
-          mkdir -p \
-            ~/.buildroot-ccache \
-            seedsigner-os/buildroot_dl
-          docker run \
-            --rm \
-            -v "$(pwd)/seedsigner-os/opt:/opt" \
-            -v "$(pwd)/seedsigner-os/images:/images" \
-            -v "$(pwd)/seedsigner-os/buildroot_dl:/buildroot_dl" \
-            -v "${HOME}/.buildroot-ccache:/root/.buildroot-ccache" \
-            seedsigner-os-build \
-            --${{ matrix.target }} --skip-repo --no-clean --smartcard
-          sudo chown -R $USER:$USER seedsigner-os/images seedsigner-os/buildroot_dl ~/.buildroot-ccache/
-
-      - name: list image (before rename)
-        run: |
-          ls -la seedsigner-os/images
-
-      - name: rename image
-        run: |
-          cd seedsigner-os/images
-          mv seedsigner_os*.img.zip seedsigner_os.${{ env.img_version }}.${{ matrix.target }}.img.zip
-
-      - name: print sha256sum
-        run: |
-          cd seedsigner-os/images
-          sha256sum *.img.zip
-
-      - name: list image (after rename)
-        run: |
-          ls -la seedsigner-os/images
-
-      - name: upload images
-        uses: actions/upload-artifact@v4
-        with:
-          name: seedsigner_os_images-${{ matrix.target }}
-          path: "seedsigner-os/images/*.img.zip"
-          if-no-files-found: error
-          # maximum 90 days retention
-          retention-days: 90
-
-  sha256sum:
-    name: calculate sha256sum
-    runs-on: ubuntu-latest
-    needs: build
     steps:
-      - name: download images
-        uses: actions/download-artifact@v4
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v4
         with:
-          path: images
+          python-version: '3.9'
 
-      - name: list images
+      - name: Install build dependencies
         run: |
-          ls -lRa images
+          sudo apt-get update
+          sudo apt-get install -y build-essential \
+            python3-pil libjpeg-dev libusb-1.0-0-dev libudev-dev \
+            cmake device-tree-compiler qemu-user-static binfmt-support
 
-      - name: get seedsigner latest commit hash
-        id: get-seedsigner-hash
-        run: |
-          git init
-          echo "source_hash=$(git rev-parse --short ${{ github.sha }})" >> $GITHUB_ENV
+      - name: Set up Docker
+        uses: docker/setup-buildx-action@v3
 
-      - name: write sha256sum
+      - name: Build SeedSigner Image using Docker
         run: |
-          cd images
-          # each downloaded image is in its own subfolder
-          find . -name "*.img.zip" -exec mv {} . \;
-          sha256sum *.img.zip > seedsigner_os.${{ env.source_hash }}.sha256
+          cd seedsigner
+          docker build -t seedsigner-build .
+          docker run --rm -v ${{ github.workspace }}:/mnt seedsigner-build \
+            cp /work/seedsigner.img /mnt/seedsigner.img
 
-      - name: upload checksums
+      - name: Upload image artifact
         uses: actions/upload-artifact@v4
         with:
-          name: seedsigner_os_images_sha256
-          path: "images/*.sha256"
-          if-no-files-found: error
-          # maximum 90 days retention
-          retention-days: 90
+          name: seedsigner-image
+          path: seedsigner.img
diff --git a/cd b/cd
new file mode 100644
index 000000000..e69de29bb
diff --git a/helpers/keystone.py b/helpers/keystone.py
new file mode 100644
index 000000000..00aa44d56
--- /dev/null
+++ b/helpers/keystone.py
@@ -0,0 +1,21 @@
+# keystone.py
+from seedsigner.gui.components.qr_type import QRType
+from seedsigner.gui.components.qr_encoder import QREncoder
+from seedsigner.gui.screens.qr_display_screen import QRDisplayScreen
+
+def show_keystone_export(gui, seed_phrase):
+    export_data = {
+        "type": "keystone-eip4527-export",
+        "mnemonic": seed_phrase,
+    }
+
+    import json
+    payload = json.dumps(export_data)
+
+    qr_encoder = QREncoder(gui, QRType.TEXT, payload)
+    screen = QRDisplayScreen(gui, qr_encoder)
+    screen.display_qr()
+
+def sign_keystone_eth_tx(gui):
+    from seedsigner.gui.screens import info_screen
+    info_screen.display_message(gui, "Sign ETH TX", "Feature coming soon.")
diff --git a/seedsigner/Dockerfile b/seedsigner/Dockerfile
new file mode 100644
index 000000000..61b3b5053
--- /dev/null
+++ b/seedsigner/Dockerfile
@@ -0,0 +1,35 @@
+FROM ubuntu:24.04
+
+# 1. Install build tools
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
+    git git-lfs build-essential python3 python3-pip \
+    dosfstools e2fsprogs qemu-user-static unzip wget
+
+WORKDIR /seedsigner
+
+# 2. Copy all source + patches
+# COPY . .
+
+COPY patches/ patches/
+
+RUN for patch in patches/*.patch; do \
+      echo "Applying $patch..."; \
+      patch -p1 < "$patch"; \
+    done
+
+# 3. Pull LFS files
+# RUN git lfs install && git lfs pull
+
+# 4. Apply your patches
+RUN for patch in patches/*.patch; do \
+      echo "Applying $patch..."; \
+      patch -p1 < "$patch"; \
+    done
+
+# 5. Install Python deps
+RUN pip3 install --upgrade pip \
+    && pip3 install -r requirements.txt ur-registry-eth
+
+# 6. Build the SD-card image
+RUN chmod +x scripts/create_img.sh \
+    && ./scripts/create_img.sh
diff --git a/seedsigner/controllers/main_menu_controller.py b/seedsigner/controllers/main_menu_controller.py
new file mode 100644
index 000000000..9925111d1
--- /dev/null
+++ b/seedsigner/controllers/main_menu_controller.py
@@ -0,0 +1,7 @@
+from seedsigner.helpers import keystone
+
+...
+main_menu.add_item(MenuItem(
+    label="Export as Keystone (EIP-4527)",
+    on_select=lambda: keystone.show_keystone_export(self.gui, self.seed_phrase)
+))
diff --git a/seedsigner/controllers/signers_menu_controller.py b/seedsigner/controllers/signers_menu_controller.py
new file mode 100644
index 000000000..d260652b5
--- /dev/null
+++ b/seedsigner/controllers/signers_menu_controller.py
@@ -0,0 +1,7 @@
+from seedsigner.helpers import keystone
+
+...
+signer_menu.add_item(MenuItem(
+    label="Sign Keystone ETH-TX (EIP-4527)",
+    on_select=keystone.sign_keystone_eth_tx
+))
\ No newline at end of file
diff --git a/seedsigner/helpers/keystone.py b/seedsigner/helpers/keystone.py
new file mode 100644
index 000000000..00aa44d56
--- /dev/null
+++ b/seedsigner/helpers/keystone.py
@@ -0,0 +1,21 @@
+# keystone.py
+from seedsigner.gui.components.qr_type import QRType
+from seedsigner.gui.components.qr_encoder import QREncoder
+from seedsigner.gui.screens.qr_display_screen import QRDisplayScreen
+
+def show_keystone_export(gui, seed_phrase):
+    export_data = {
+        "type": "keystone-eip4527-export",
+        "mnemonic": seed_phrase,
+    }
+
+    import json
+    payload = json.dumps(export_data)
+
+    qr_encoder = QREncoder(gui, QRType.TEXT, payload)
+    screen = QRDisplayScreen(gui, qr_encoder)
+    screen.display_qr()
+
+def sign_keystone_eth_tx(gui):
+    from seedsigner.gui.screens import info_screen
+    info_screen.display_message(gui, "Sign ETH TX", "Feature coming soon.")
diff --git a/seedsigner/patches/0001-add-keystone-wallet-pairing.patch b/seedsigner/patches/0001-add-keystone-wallet-pairing.patch
new file mode 100644
index 000000000..b366ab275
--- /dev/null
+++ b/seedsigner/patches/0001-add-keystone-wallet-pairing.patch
@@ -0,0 +1,45 @@
+From a1b2c3d4e5f6g7 Mon Sep 17 00:00:00 2001
+From: Your Name <you@example.com>
+Date: 2025-08-07
+Subject: [PATCH 1/2] Add Keystone pairing QR export
+
+---
+seedsigner/gui/menus/main_menu.py | 12 ++++++++++++
+seedsigner/helpers/keystone.py    | 19 +++++++++++++++++++
+2 files changed, 31 insertions(+)
+create mode 100644 seedsigner/helpers/keystone.py
+
+diff --git a/seedsigner/gui/menus/main_menu.py b/seedsigner/gui/menus/main_menu.py
+index 1234567..89abcde 100644
+--- a/seedsigner/gui/menus/main_menu.py
++++ b/seedsigner/gui/menus/main_menu.py
+@@ def MAIN_MENU(self):
++        MenuOption("Export Keystone Pairing QR", "export_keystone_pairing_qr"),
+
+@@ def _handle_selected_option(self, option):
++        elif option == "Export Keystone Pairing QR":
++            from seedsigner.helpers import keystone
++            qr_data = keystone.get_pairing_qr()
++            self.qr_view_display_screen(
++                qr_data,
++                title="Keystone Pairing QR"
++            )
+
+diff --git a/seedsigner/helpers/keystone.py b/seedsigner/helpers/keystone.py
+new file mode 100644
+index 0000000..1111111
+--- /dev/null
++++ b/seedsigner/helpers/keystone.py
+@@
++def get_pairing_qr():
++    # Replace with your actual fingerprint and metadata
++    device = {
++        "type": "keystone",
++        "version": "1.0.0",
++        "model": "SeedSigner",
++        "fingerprint": "12345678",
++        "xfp": "12345678"
++    }
++    import json
++    return json.dumps(device)
+
diff --git a/seedsigner/patches/0002-add-keystone-eth-sign.patch b/seedsigner/patches/0002-add-keystone-eth-sign.patch
new file mode 100644
index 000000000..1b704cd70
--- /dev/null
+++ b/seedsigner/patches/0002-add-keystone-eth-sign.patch
@@ -0,0 +1,43 @@
+From b7c8d9e0f1a2b3 Mon Sep 17 00:00:00 2001
+From: Your Name <you@example.com>
+Date: 2025-08-07
+Subject: [PATCH 2/2] Add Keystone ETH signing support
+
+---
+seedsigner/gui/menus/signers_menu.py | 12 ++++++++++++
+seedsigner/helpers/keystone_sign.py  | 30 ++++++++++++++++++++++++++++++
+2 files changed, 42 insertions(+)
+create mode 100644 seedsigner/helpers/keystone_sign.py
+
+diff --git a/seedsigner/gui/menus/signers_menu.py b/seedsigner/gui/menus/signers_menu.py
+index abcdef0..1234567 100644
+--- a/seedsigner/gui/menus/signers_menu.py
++++ b/seedsigner/gui/menus/signers_menu.py
+@@ def SIGNER_MENU(self):
++        MenuOption("Sign Keystone ETH-TX", "sign_keystone_eth_tx"),
+
+@@ def _handle_selected_option(self, option):
++        elif option == "Sign Keystone ETH-TX":
++            from seedsigner.helpers import keystone_sign
++            eth_tx = self.qr_capture_input_screen("Scan ETH TX QR")
++            signed = keystone_sign.sign_eth_tx(eth_tx)
++            self.qr_view_display_screen(
++                signed,
++                title="Signed ETH TX"
++            )
+
+diff --git a/seedsigner/helpers/keystone_sign.py b/seedsigner/helpers/keystone_sign.py
+new file mode 100644
+index 0000000..2222222
+--- /dev/null
++++ b/seedsigner/helpers/keystone_sign.py
+@@
++def sign_eth_tx(payload):
++    import json
++    # Mock signing process
++    try:
++        data = json.loads(payload)
++        data["signature"] = "0xdeadbeef"  # Replace with actual ECDSA logic
++        return json.dumps(data)
++    except Exception as e:
++        return json.dumps({"error": str(e)})
\ No newline at end of file