diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 14006ee..e5a0cbd 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -60,22 +60,15 @@ jobs:
             workdir=$(mktemp -d)
             unzip -q "$tidal_src" -d "$workdir"
             ls "$workdir"
-            cp "$workdir/base.apk" ./dist/tidal-stock.apk
-            dist_abs=$(realpath ./dist/tidal-stock.apk)
+            dist_abs=$(realpath ./dist)/tidal-stock.apk
+
+            javac scripts/MergeApk.java -d scripts
+            splits=("$workdir"/split_*.apk)
+            java -cp scripts MergeApk "$dist_abs" "$workdir/base.apk" "${splits[@]}"
 
-            # Merge every split APK's contents into base.apk
-            for split in "$workdir"/split_*.apk "$workdir"/config.*.apk; do
-              [ -f "$split" ] || continue
-              echo "Merging $(basename "$split")"
-              libdir=$(mktemp -d)
-              unzip -q "$split" -d "$libdir"
-              rm -rf "$libdir/META-INF" "$libdir/AndroidManifest.xml" "$libdir/resources.arsc"
-              (cd "$libdir" && zip -qrD "$dist_abs" .)
-              rm -rf "$libdir"
-            done
             rm -rf "$workdir"
-            echo "Merged tidal-stock.apk size:"
-            ls -la ./dist/tidal-stock.apk
+            echo "Merged tidal-stock.apk:"
+            ls -la "$dist_abs"
           else
             cp "$tidal_src" ./dist/tidal-stock.apk
           fi
diff --git a/Manager/app/src/main/kotlin/com/meowarex/rlmobile/patcher/steps/patch/PatchManifestStep.kt b/Manager/app/src/main/kotlin/com/meowarex/rlmobile/patcher/steps/patch/PatchManifestStep.kt
index c2dd4e6..37d2334 100644
--- a/Manager/app/src/main/kotlin/com/meowarex/rlmobile/patcher/steps/patch/PatchManifestStep.kt
+++ b/Manager/app/src/main/kotlin/com/meowarex/rlmobile/patcher/steps/patch/PatchManifestStep.kt
@@ -44,7 +44,12 @@ class PatchManifestStep(private val options: PatchOptions) : Step() {
                     val bytes = if (name == "AndroidManifest.xml") {
                         patchedManifest
                     } else {
-                        reader.openEntry(name)!!.read()
+                        try {
+                            reader.openEntry(name)!!.read()
+                        } catch (t: Throwable) {
+                            container.log("Failed to read entry: $name")
+                            throw t
+                        }
                     }
                     writer.writeEntry(name, bytes)
                 }
diff --git a/scripts/MergeApk.java b/scripts/MergeApk.java
new file mode 100644
index 0000000..dd90e74
--- /dev/null
+++ b/scripts/MergeApk.java
@@ -0,0 +1,61 @@
+import java.io.*;
+import java.util.*;
+import java.util.zip.*;
+
+// Merges an APKMirror split-APK bundle into a single installable APK.
+// Usage: java MergeApk out.apk base.apk split1.apk split2.apk ...
+public class MergeApk {
+    public static void main(String[] args) throws Exception {
+        if (args.length < 2) {
+            System.err.println("Usage: java MergeApk out.apk base.apk [split.apk ...]");
+            System.exit(1);
+        }
+        String out = args[0];
+        Set<String> seen = new HashSet<>();
+        try (ZipOutputStream zos = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(out)))) {
+            for (int i = 1; i < args.length; i++) {
+                String src = args[i];
+                boolean isBase = i == 1;
+                int added = 0, skipped = 0;
+                try (ZipFile zip = new ZipFile(src)) {
+                    Enumeration<? extends ZipEntry> entries = zip.entries();
+                    while (entries.hasMoreElements()) {
+                        ZipEntry e = entries.nextElement();
+                        if (e.isDirectory()) { skipped++; continue; }
+                        String name = e.getName();
+                        if (!isBase && (
+                                name.equals("AndroidManifest.xml") ||
+                                name.equals("resources.arsc") ||
+                                name.startsWith("META-INF/") ||
+                                name.equals("stamp-cert-sha256"))) {
+                            skipped++;
+                            continue;
+                        }
+                        if (seen.contains(name)) { skipped++; continue; }
+                        seen.add(name);
+
+                        ZipEntry ne = new ZipEntry(name);
+                        if (e.getMethod() == ZipEntry.STORED) {
+                            ne.setMethod(ZipEntry.STORED);
+                            ne.setSize(e.getSize());
+                            ne.setCompressedSize(e.getSize());
+                            ne.setCrc(e.getCrc());
+                        } else {
+                            ne.setMethod(ZipEntry.DEFLATED);
+                        }
+                        zos.putNextEntry(ne);
+                        try (InputStream is = zip.getInputStream(e)) {
+                            byte[] buf = new byte[16384];
+                            int n;
+                            while ((n = is.read(buf)) > 0) zos.write(buf, 0, n);
+                        }
+                        zos.closeEntry();
+                        added++;
+                    }
+                }
+                System.out.printf("%s: +%d added, %d skipped%n", src, added, skipped);
+            }
+        }
+        System.out.printf("Wrote %d entries to %s%n", seen.size(), out);
+    }
+}