diff --git a/.github/workflows/create-release-prs.yml b/.github/workflows/create-release-prs.yml
index 1e740dcd8..be72e6b50 100644
--- a/.github/workflows/create-release-prs.yml
+++ b/.github/workflows/create-release-prs.yml
@@ -44,6 +44,20 @@ jobs:
       BASE_BRANCH: ${{ github.event.inputs.base_branch }}
       RELEASE_BRANCH: ${{ needs.prep.outputs.release_branch }}
       GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      # Single source of truth for the XCFrameworks the Code Sign and Verify steps
+      # operate on (paths relative to iOS_SDK/OneSignalSDK). Keep in sync with the
+      # frameworks built by build_all_frameworks.sh.
+      XCFRAMEWORKS: >-
+        OneSignal_Core/OneSignalCore.xcframework
+        OneSignal_OSCore/OneSignalOSCore.xcframework
+        OneSignal_Outcomes/OneSignalOutcomes.xcframework
+        OneSignal_Extension/OneSignalExtension.xcframework
+        OneSignal_Notifications/OneSignalNotifications.xcframework
+        OneSignal_User/OneSignalUser.xcframework
+        OneSignal_LiveActivities/OneSignalLiveActivities.xcframework
+        OneSignal_Location/OneSignalLocation.xcframework
+        OneSignal_InAppMessages/OneSignalInAppMessages.xcframework
+        OneSignal_XCFramework/OneSignalFramework.xcframework
 
     steps:
       - name: 📋 Display Configuration
@@ -75,21 +89,13 @@ jobs:
         with:
           xcode-version: "15.2"
 
-      - name: Install the Apple distribution certificate and provisioning profile (OneSignal)
+      - name: Install the Apple distribution certificate (OneSignal)
         uses: apple-actions/import-codesign-certs@v2
         with:
           keychain-password: ${{ secrets.CERTIFICATES_P12_PASSWORD }}
           p12-file-base64: ${{ secrets.CERTIFICATES_P12 }}
           p12-password: ${{ secrets.CERTIFICATES_P12_PASSWORD }}
 
-      - name: Install the Apple distribution certificate and provisioning profile (Lilomi)
-        uses: apple-actions/import-codesign-certs@v2
-        with:
-          create-keychain: false # do not create a new keychain for this value
-          keychain-password: ${{ secrets.CERTIFICATES_P12_PASSWORD }}
-          p12-file-base64: ${{ secrets.DEV_CERTIFICATES_P12 }}
-          p12-password: ${{ secrets.DEV_CERTIFICATES_P12_PASSWORD }}
-
       - name: Update Version in SDK and Podspec Files
         run: |
           cd iOS_SDK/OneSignalSDK
@@ -112,16 +118,41 @@ jobs:
       - name: Code Sign
         run: |
           cd iOS_SDK/OneSignalSDK
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_Core/OneSignalCore.xcframework
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_Extension/OneSignalExtension.xcframework
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_InAppMessages/OneSignalInAppMessages.xcframework
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_Location/OneSignalLocation.xcframework
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_Notifications/OneSignalNotifications.xcframework
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_OSCore/OneSignalOSCore.xcframework
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_Outcomes/OneSignalOutcomes.xcframework
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_User/OneSignalUser.xcframework
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_XCFramework/OneSignalFramework.xcframework
-          codesign --timestamp -v --sign "Apple Distribution: OneSignal, Inc. (J3J28YJX9L)" OneSignal_LiveActivities/OneSignalLiveActivities.xcframework
+          set -e
+          IDENTITY="Apple Distribution: OneSignal, Inc. (J3J28YJX9L)"
+          for XCF in $XCFRAMEWORKS; do
+            # Sign inside-out: each slice's .framework binary first, then the
+            # .xcframework wrapper. -f replaces the linker's ad-hoc signature left
+            # by the unsigned archive build, so both inner and outer end up signed
+            # with the official OneSignal Apple Distribution identity.
+            while IFS= read -r FW; do
+              echo "Signing inner framework: $FW"
+              codesign --timestamp -f -v --sign "$IDENTITY" "$FW"
+            done < <(find "$XCF" -type d -name "*.framework")
+            echo "Signing wrapper: $XCF"
+            codesign --timestamp -f -v --sign "$IDENTITY" "$XCF"
+          done
+        shell: bash
+
+      - name: Verify Code Signing
+        run: |
+          cd iOS_SDK/OneSignalSDK
+          set -e
+          # Fail the release if any slice or wrapper is tampered/unsigned or not
+          # signed by the OneSignal team. --deep is unreliable across xcframework
+          # slices, so each inner .framework is verified explicitly.
+          REQUIREMENT="anchor apple generic and certificate leaf[subject.OU] = J3J28YJX9L"
+          for XCF in $XCFRAMEWORKS; do
+            while IFS= read -r FW; do
+              echo "Verifying inner framework: $FW"
+              codesign --verify --strict --verbose=2 "$FW"
+              codesign --verify -R="$REQUIREMENT" "$FW"
+            done < <(find "$XCF" -type d -name "*.framework")
+            echo "Verifying wrapper: $XCF"
+            codesign --verify --strict --verbose=2 "$XCF"
+            codesign --verify -R="$REQUIREMENT" "$XCF"
+          done
+          echo "All XCFrameworks verified: intact and signed by OneSignal (J3J28YJX9L)."
         shell: bash
 
       - name: Commit Build and Push Changes
diff --git a/iOS_SDK/OneSignalSDK/build_all_frameworks.sh b/iOS_SDK/OneSignalSDK/build_all_frameworks.sh
index c9b7804ed..936c78d1c 100755
--- a/iOS_SDK/OneSignalSDK/build_all_frameworks.sh
+++ b/iOS_SDK/OneSignalSDK/build_all_frameworks.sh
@@ -26,11 +26,17 @@ create_xcframework() {
 
     xcodebuild -list
 
-    xcodebuild archive ONLY_ACTIVE_ARCH=NO -scheme ${BUILD_SCHEME} -destination="generic/platform=iOS Simulator" -archivePath "${SIMULATOR_ARCHIVE_PATH}" -sdk iphonesimulator SKIP_INSTALL=NO BUILD_LIBRARIES_FOR_DISTRIBUTION=YES
+    # Note: code signing is disabled here. These are distribution XCFrameworks
+    # that are signed afterward with the Apple Distribution cert in the workflow's
+    # "Code Sign" step, so the archive itself does not need to be signed. This also
+    # avoids depending on the project's baked-in DEVELOPMENT_TEAM / dev certificate.
+    CODE_SIGN_FLAGS="CODE_SIGN_IDENTITY= CODE_SIGNING_REQUIRED=NO CODE_SIGNING_ALLOWED=NO"
 
-    xcodebuild archive -scheme ${BUILD_SCHEME} -destination="generic/platform=iOS" -archivePath "${IOS_DEVICE_ARCHIVE_PATH}" -sdk iphoneos SKIP_INSTALL=NO BUILD_LIBRARIES_FOR_DISTRIBUTION=YES
+    xcodebuild archive ONLY_ACTIVE_ARCH=NO -scheme ${BUILD_SCHEME} -destination="generic/platform=iOS Simulator" -archivePath "${SIMULATOR_ARCHIVE_PATH}" -sdk iphonesimulator SKIP_INSTALL=NO BUILD_LIBRARIES_FOR_DISTRIBUTION=YES ${CODE_SIGN_FLAGS}
 
-    xcodebuild archive -scheme ${BUILD_SCHEME} -destination='generic/platform=macOS,variant=Mac Catalyst' -archivePath "${CATALYST_ARCHIVE_PATH}" SKIP_INSTALL=NO BUILD_LIBRARIES_FOR_DISTRIBUTION=YES
+    xcodebuild archive -scheme ${BUILD_SCHEME} -destination="generic/platform=iOS" -archivePath "${IOS_DEVICE_ARCHIVE_PATH}" -sdk iphoneos SKIP_INSTALL=NO BUILD_LIBRARIES_FOR_DISTRIBUTION=YES ${CODE_SIGN_FLAGS}
+
+    xcodebuild archive -scheme ${BUILD_SCHEME} -destination='generic/platform=macOS,variant=Mac Catalyst' -archivePath "${CATALYST_ARCHIVE_PATH}" SKIP_INSTALL=NO BUILD_LIBRARIES_FOR_DISTRIBUTION=YES ${CODE_SIGN_FLAGS}
 
     xcodebuild -create-xcframework -framework ${SIMULATOR_ARCHIVE_PATH}/Products/Library/Frameworks/${FRAMEWORK_NAME}.framework -debug-symbols ${SIMULATOR_ARCHIVE_PATH}/dSYMs/${FRAMEWORK_NAME}.framework.dSYM -framework ${IOS_DEVICE_ARCHIVE_PATH}/Products/Library/Frameworks/${FRAMEWORK_NAME}.framework -debug-symbols ${IOS_DEVICE_ARCHIVE_PATH}/dSYMs/${FRAMEWORK_NAME}.framework.dSYM -framework ${CATALYST_ARCHIVE_PATH}/Products/Library/Frameworks/${FRAMEWORK_NAME}.framework -debug-symbols ${CATALYST_ARCHIVE_PATH}/dSYMs/${FRAMEWORK_NAME}.framework.dSYM -output "${FRAMEWORK_PATH}"
     rm -rf "${SIMULATOR_ARCHIVE_PATH}"
diff --git a/iOS_SDK/OneSignalSDK/update_swift_package.sh b/iOS_SDK/OneSignalSDK/update_swift_package.sh
index b62ca7913..cc135a3d5 100755
--- a/iOS_SDK/OneSignalSDK/update_swift_package.sh
+++ b/iOS_SDK/OneSignalSDK/update_swift_package.sh
@@ -8,6 +8,11 @@ WORKING_DIR=$(pwd)
 # read VERSION_NUMBER
 VERSION_NUMBER=$1
 
+if [ -z "${VERSION_NUMBER}" ]; then
+    echo "ERROR: release version argument is required (usage: $0 <version>)" >&2
+    exit 1
+fi
+
 update_framework() {
     FRAMEWORK_FOLDER_NAME=$1
 
@@ -36,43 +41,80 @@ update_framework() {
     # Compute the checksum for the Zipped framework
     echo "Computing package checksum and updating Package.swift ${SWIFT_PACKAGE_PATH}"
     CHECKSUM=$(swift package compute-checksum "${FRAMEWORK_ZIP_PATH}")
-    SWIFT_PM_CHECKSUM_LINE="          checksum: \"${CHECKSUM}\""
-
-    # Use sed to remove line from the Swift.package and replace it with the new checksum
-    sed -i '' "$3s/.*/$SWIFT_PM_CHECKSUM_LINE/" "${SWIFT_PACKAGE_PATH}"
-    SWIFT_PM_URL_LINE="          url: \"https:\/\/github.com\/OneSignal\/OneSignal-iOS-SDK\/releases\/download\/${VERSION_NUMBER}\/${FRAMEWORK_NAME}.xcframework.zip\","
-    #Use sed to remove line from the Swift.package and replace it with the new URL for the new release
-    sed -i '' "$4s/.*/$SWIFT_PM_URL_LINE/" "${SWIFT_PACKAGE_PATH}"
+    if [ -z "${CHECKSUM}" ]; then
+        echo "ERROR: empty checksum computed for ${FRAMEWORK_NAME}" >&2
+        exit 1
+    fi
+    # Update this framework's .binaryTarget in place, located by the framework
+    # name in its url line (NOT by hardcoded line number). Only the version in the
+    # url and the hash in the following checksum line are rewritten; surrounding
+    # structure/formatting is preserved. Matching by name keeps this correct even
+    # when the manifest layout shifts -- the previous line-number approach silently
+    # corrupted Package.swift once unrelated lines moved (broke 5.5.2 SPM).
+    awk -v fw="${FRAMEWORK_NAME}" -v ver="${VERSION_NUMBER}" -v chk="${CHECKSUM}" '
+        # This framework'"'"'s url line: bump only the version path segment.
+        $0 ~ ("url: \"https://github.com/OneSignal/OneSignal-iOS-SDK/releases/download/[^/]*/" fw "\\.xcframework\\.zip\"") {
+            sub("download/[^/]*/", "download/" ver "/")
+            print
+            expect_checksum = 1
+            next
+        }
+        # The checksum must sit on the line IMMEDIATELY after that url (the
+        # well-formed .binaryTarget layout). Only that one line is eligible, so a
+        # reordered/stray/renamed checksum line can never be clobbered: if it is not
+        # a checksum line nothing is rewritten and the post-run guard fails loudly.
+        expect_checksum {
+            expect_checksum = 0
+            if ($0 ~ /^[[:space:]]*checksum: "[0-9a-fA-F]*"[[:space:]]*$/) {
+                sub("checksum: \"[0-9a-fA-F]*\"", "checksum: \"" chk "\"")
+            }
+            print
+            next
+        }
+        { print }
+    ' "${SWIFT_PACKAGE_PATH}" > "${SWIFT_PACKAGE_PATH}.tmp"
+    mv "${SWIFT_PACKAGE_PATH}.tmp" "${SWIFT_PACKAGE_PATH}"
+
+    # Fail loudly if the entry was not found/updated, instead of silently leaving
+    # the manifest stale or malformed.
+    if ! grep -q "releases/download/${VERSION_NUMBER}/${FRAMEWORK_NAME}.xcframework.zip" "${SWIFT_PACKAGE_PATH}"; then
+        echo "ERROR: could not find/update url for ${FRAMEWORK_NAME} in Package.swift" >&2
+        exit 1
+    fi
+    if ! grep -q "checksum: \"${CHECKSUM}\"" "${SWIFT_PACKAGE_PATH}"; then
+        echo "ERROR: could not update checksum for ${FRAMEWORK_NAME} in Package.swift" >&2
+        exit 1
+    fi
     #Open XCFramework folder to drag zip into new release
     open "${WORKING_DIR}/${FRAMEWORK_FOLDER_NAME}"
 }
 
 ## OneSignal LiveActivities ##
-update_framework "OneSignal_LiveActivities" "OneSignalLiveActivities" "163" "162"
+update_framework "OneSignal_LiveActivities" "OneSignalLiveActivities"
 
 ## OneSignal Core ##
-update_framework "OneSignal_Core" "OneSignalCore" "158" "157"
+update_framework "OneSignal_Core" "OneSignalCore"
 
 ## OneSignal OSCore ##
-update_framework "OneSignal_OSCore" "OneSignalOSCore" "153" "152"
+update_framework "OneSignal_OSCore" "OneSignalOSCore"
 
 ## OneSignal Outcomes ##
-update_framework "OneSignal_Outcomes" "OneSignalOutcomes" "148" "147"
+update_framework "OneSignal_Outcomes" "OneSignalOutcomes"
 
 ## OneSignal Extension ##
-update_framework "OneSignal_Extension" "OneSignalExtension" "143" "142"
+update_framework "OneSignal_Extension" "OneSignalExtension"
 
 ## OneSignal Notifications ##
-update_framework "OneSignal_Notifications" "OneSignalNotifications" "138" "137"
+update_framework "OneSignal_Notifications" "OneSignalNotifications"
 
 ## OneSignal User ##
-update_framework "OneSignal_User" "OneSignalUser" "133" "132"
+update_framework "OneSignal_User" "OneSignalUser"
 
 ## OneSignal Location ##
-update_framework "OneSignal_Location" "OneSignalLocation" "128" "127"
+update_framework "OneSignal_Location" "OneSignalLocation"
 
 ## OneSignal InAppMessages ##
-update_framework "OneSignal_InAppMessages" "OneSignalInAppMessages" "123" "122"
+update_framework "OneSignal_InAppMessages" "OneSignalInAppMessages"
 
 ## OneSignal ##
-update_framework "OneSignal_XCFramework" "OneSignalFramework" "118" "117"
+update_framework "OneSignal_XCFramework" "OneSignalFramework"