diff --git a/.gitmodules b/.gitmodules
index fc4e043f..37ddf116 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -7,8 +7,8 @@
 [submodule "submodules/libpcap"]
 	path = submodules/libpcap
 	url = https://github.com/the-tcpdump-group/libpcap
-[submodule "submodules/res"]
-	path = submodules/res
+[submodule "app/src/main/res/raw"]
+	path = app/src/main/res/raw
 	url = https://github.com/emanuele-f/PCAPdroid_res
 [submodule "submodules/MaxMind-DB-Reader-java"]
 	path = submodules/MaxMind-DB-Reader-java
diff --git a/app/build.gradle b/app/build.gradle
index 6b329993..8f37a376 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -48,6 +48,10 @@ android {
         sourceCompatibility JavaVersion.VERSION_1_8
         targetCompatibility JavaVersion.VERSION_1_8
     }
+
+    sourceSets {
+        main.java.srcDirs += '../submodules/MaxMind-DB-Reader-java/src/main/java'
+    }
 }
 
 dependencies {
diff --git a/app/src/main/java/com/emanuelef/remote_capture/Geolocation.java b/app/src/main/java/com/emanuelef/remote_capture/Geolocation.java
index 015052a3..f9a923af 100644
--- a/app/src/main/java/com/emanuelef/remote_capture/Geolocation.java
+++ b/app/src/main/java/com/emanuelef/remote_capture/Geolocation.java
@@ -30,9 +30,7 @@ import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
-import java.io.OutputStream;
 import java.net.InetAddress;
-import java.util.zip.GZIPInputStream;
 
 /* A class to query geolocation info from IP addresses. */
 public class Geolocation {
@@ -63,12 +61,12 @@ public class Geolocation {
     private void openDb() {
         try {
             File countryFile = new File(mContext.getCacheDir() + "/dbip_country_lite.mmdb");
-            ungzip(R.raw.dbip_country_lite_2021_11_mmdb_gz, countryFile);
+            res_to_file(R.raw.dbip_country_lite, countryFile);
             mCountryReader = new Reader(countryFile);
             Log.d(TAG, "Country DB loaded: " + mCountryReader.getMetadata());
 
             File asnFile = new File(mContext.getCacheDir() + "/dbip_asn_lite.mmdb");
-            ungzip(R.raw.dbip_asn_lite_2021_11_mmdb_gz, asnFile);
+            res_to_file(R.raw.dbip_asn_lite, asnFile);
             mAsnReader = new Reader(asnFile);
             Log.d(TAG, "ASN DB loaded: " + mAsnReader.getMetadata());
         } catch (IOException e) {
@@ -77,13 +75,14 @@ public class Geolocation {
         }
     }
 
-    private void ungzip(int resid, File dst) throws IOException {
-        try(InputStream is = new GZIPInputStream(mContext.getResources().openRawResource(resid))) {
+    // We need to get a File from the resource so that the Reader can mmap it
+    private void res_to_file(int resid, File dst) throws IOException {
+        try(InputStream is = mContext.getResources().openRawResource(resid)) {
             try(BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(dst))) {
                 byte[] bytesIn = new byte[4096];
-                int read = 0;
+                int read;
 
-                while ((read = is.read(bytesIn)) != -1)
+                while((read = is.read(bytesIn)) != -1)
                     bos.write(bytesIn, 0, read);
             }
         }
diff --git a/app/src/main/java/com/maxmind b/app/src/main/java/com/maxmind
deleted file mode 120000
index 8faf93d2..00000000
--- a/app/src/main/java/com/maxmind
+++ /dev/null
@@ -1 +0,0 @@
-../../../../../submodules/MaxMind-DB-Reader-java/src/main/java/com/maxmind
\ No newline at end of file
diff --git a/app/src/main/jni/common/utils.c b/app/src/main/jni/common/utils.c
index 923a7fb7..62513c6a 100644
--- a/app/src/main/jni/common/utils.c
+++ b/app/src/main/jni/common/utils.c
@@ -241,7 +241,7 @@ void hexdump(const char *buf, size_t bufsize) {
     if((off % 16) != 0) {
         out[idx] = '\0';
         log_d("%s", out);
-        idx = sprintf(out, "%06x", off);
+        idx = sprintf(out, "%06zx", off);
     }
 
     out[idx] = '\0';
diff --git a/app/src/main/res/raw b/app/src/main/res/raw
deleted file mode 120000
index 94c1e772..00000000
--- a/app/src/main/res/raw
+++ /dev/null
@@ -1 +0,0 @@
-../../../../submodules/res/raw
\ No newline at end of file
diff --git a/app/src/main/res/raw b/app/src/main/res/raw
new file mode 160000
index 00000000..936109f0
--- /dev/null
+++ b/app/src/main/res/raw
@@ -0,0 +1 @@
+Subproject commit 936109f0a2b30783bdf273e5e7c6092d2a4817bc
diff --git a/submodules/res b/submodules/res
deleted file mode 160000
index 64a2e49b..00000000
--- a/submodules/res
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 64a2e49b6ad58a094f8c726d054a02cbe945c6b5