diff --git a/app_pojavlauncher/src/main/assets/components/forge_installer/forge_installer.jar b/app_pojavlauncher/src/main/assets/components/forge_installer/forge_installer.jar
index c9475cb38..c9c5045a2 100644
Binary files a/app_pojavlauncher/src/main/assets/components/forge_installer/forge_installer.jar and b/app_pojavlauncher/src/main/assets/components/forge_installer/forge_installer.jar differ
diff --git a/app_pojavlauncher/src/main/assets/components/forge_installer/version b/app_pojavlauncher/src/main/assets/components/forge_installer/version
index e650fdcf5..b8f0d6121 100644
--- a/app_pojavlauncher/src/main/assets/components/forge_installer/version
+++ b/app_pojavlauncher/src/main/assets/components/forge_installer/version
@@ -1 +1 @@
-1687971356220
\ No newline at end of file
+1688118307460
\ No newline at end of file
diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/fragments/OptiFineInstallFragment.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/fragments/OptiFineInstallFragment.java
index 5718c5623..a37704618 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/fragments/OptiFineInstallFragment.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/fragments/OptiFineInstallFragment.java
@@ -1,9 +1,11 @@
 package net.kdt.pojavlaunch.fragments;
 
 import android.content.Context;
+import android.content.Intent;
 import android.view.LayoutInflater;
 import android.widget.ExpandableListAdapter;
 
+import net.kdt.pojavlaunch.JavaGUILauncherActivity;
 import net.kdt.pojavlaunch.R;
 import net.kdt.pojavlaunch.Tools;
 import net.kdt.pojavlaunch.modloaders.ModloaderListenerProxy;
@@ -55,6 +57,8 @@ public class OptiFineInstallFragment extends ModVersionListFragment<OptiFineUtil
 
     @Override
     public void onDownloadFinished(Context context, File downloadedFile) {
-        Tools.dialog(context, "Not yet complete", "Installation of OptiFine is not yet implemented. To be done!");
+        Intent modInstallerStartIntent = new Intent(context, JavaGUILauncherActivity.class);
+        OptiFineUtils.addAutoInstallArgs(modInstallerStartIntent, downloadedFile);
+        context.startActivity(modInstallerStartIntent);
     }
 }
diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineDownloadTask.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineDownloadTask.java
index 9ea1653eb..c5278340d 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineDownloadTask.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineDownloadTask.java
@@ -2,18 +2,25 @@ package net.kdt.pojavlaunch.modloaders;
 
 import com.kdt.mcgui.ProgressLayout;
 
+import net.kdt.pojavlaunch.JMinecraftVersionList;
 import net.kdt.pojavlaunch.R;
 import net.kdt.pojavlaunch.Tools;
 import net.kdt.pojavlaunch.progresskeeper.ProgressKeeper;
+import net.kdt.pojavlaunch.tasks.AsyncMinecraftDownloader;
 import net.kdt.pojavlaunch.utils.DownloadUtils;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
-public class OptiFineDownloadTask implements Runnable, Tools.DownloaderFeedback{
+public class OptiFineDownloadTask implements Runnable, Tools.DownloaderFeedback, AsyncMinecraftDownloader.DoneListener {
+    private static final Pattern sMcVersionPattern = Pattern.compile("([0-9]+)\\.([0-9]+)\\.?([0-9]+)?");
     private final OptiFineUtils.OptiFineVersion mOptiFineVersion;
     private final File mDestinationFile;
     private final ModloaderDownloadListener mListener;
+    private final Object mMinecraftDownloadLock = new Object();
+    private Throwable mDownloaderThrowable;
 
     public OptiFineDownloadTask(OptiFineUtils.OptiFineVersion mOptiFineVersion, File mDestinationFile, ModloaderDownloadListener mListener) {
         this.mOptiFineVersion = mOptiFineVersion;
@@ -23,7 +30,7 @@ public class OptiFineDownloadTask implements Runnable, Tools.DownloaderFeedback{
 
     @Override
     public void run() {
-        ProgressKeeper.submitProgress(ProgressLayout.INSTALL_MODPACK, 0, R.string.of_dl_progress, mOptiFineVersion.downloadUrl);
+        ProgressKeeper.submitProgress(ProgressLayout.INSTALL_MODPACK, 0, R.string.of_dl_progress, mOptiFineVersion.versionName);
         try {
             if(runCatching()) mListener.onDownloadFinished(mDestinationFile);
         }catch (IOException e) {
@@ -35,6 +42,17 @@ public class OptiFineDownloadTask implements Runnable, Tools.DownloaderFeedback{
     public boolean runCatching() throws IOException {
         String downloadUrl = scrapeDownloadsPage();
         if(downloadUrl == null) return false;
+        String minecraftVersion = determineMinecraftVersion();
+        if(minecraftVersion == null) return false;
+        if(!downloadMinecraft(minecraftVersion)) {
+            if(mDownloaderThrowable instanceof Exception) {
+                mListener.onDownloadError((Exception) mDownloaderThrowable);
+            }else {
+                Exception exception = new Exception(mDownloaderThrowable);
+                mListener.onDownloadError(exception);
+            }
+            return false;
+        }
         DownloadUtils.downloadFileMonitored(downloadUrl, mDestinationFile, new byte[8192], this);
         return true;
     }
@@ -45,9 +63,59 @@ public class OptiFineDownloadTask implements Runnable, Tools.DownloaderFeedback{
         return scrapeResult;
     }
 
+    public String determineMinecraftVersion() {
+        Matcher matcher = sMcVersionPattern.matcher(mOptiFineVersion.minecraftVersion);
+        if(matcher.find()) {
+            StringBuilder mcVersionBuilder = new StringBuilder();
+            mcVersionBuilder.append(matcher.group(1));
+            mcVersionBuilder.append('.');
+            mcVersionBuilder.append(matcher.group(2));
+            String thirdGroup = matcher.group(3);
+            if(thirdGroup != null && !thirdGroup.isEmpty() && !"0".equals(thirdGroup)) {
+                mcVersionBuilder.append('.');
+                mcVersionBuilder.append(thirdGroup);
+            }
+            return mcVersionBuilder.toString();
+        }else{
+            mListener.onDataNotAvailable();
+            return null;
+        }
+    }
+
+    public boolean downloadMinecraft(String minecraftVersion) {
+        // the string is always normalized
+        JMinecraftVersionList.Version minecraftJsonVersion = AsyncMinecraftDownloader.getListedVersion(minecraftVersion);
+        if(minecraftJsonVersion == null) return false;
+        try {
+            synchronized (mMinecraftDownloadLock) {
+                new AsyncMinecraftDownloader(null, minecraftJsonVersion, minecraftVersion, this);
+                mMinecraftDownloadLock.wait();
+            }
+        }catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        return mDownloaderThrowable == null;
+    }
+
     @Override
     public void updateProgress(int curr, int max) {
         int progress100 = (int)(((float)curr / (float)max)*100f);
         ProgressKeeper.submitProgress(ProgressLayout.INSTALL_MODPACK, progress100, R.string.of_dl_progress, mOptiFineVersion.versionName);
     }
+
+    @Override
+    public void onDownloadDone() {
+        synchronized (mMinecraftDownloadLock) {
+            mDownloaderThrowable = null;
+            mMinecraftDownloadLock.notifyAll();
+        }
+    }
+
+    @Override
+    public void onDownloadFailed(Throwable throwable) {
+        synchronized (mMinecraftDownloadLock) {
+            mDownloaderThrowable = throwable;
+            mMinecraftDownloadLock.notifyAll();
+        }
+    }
 }
diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineScraper.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineScraper.java
index 048b972ce..56a89bd02 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineScraper.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineScraper.java
@@ -55,6 +55,7 @@ public class OptiFineScraper implements DownloadUtils.ParseCallback<OptiFineUtil
 
     private void traverseDownloadLine(TagNode tagNode) {
         OptiFineUtils.OptiFineVersion optiFineVersion = new OptiFineUtils.OptiFineVersion();
+        optiFineVersion.minecraftVersion = mMinecraftVersion;
         for(TagNode subNode : tagNode.getChildTags()) {
             if(!subNode.getName().equals("td")) continue;
             switch(subNode.getAttributeByName("class")) {
diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineUtils.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineUtils.java
index bb0e5967e..32cf9938b 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineUtils.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/modloaders/OptiFineUtils.java
@@ -1,7 +1,11 @@
 package net.kdt.pojavlaunch.modloaders;
 
+import android.content.Intent;
+
+import net.kdt.pojavlaunch.Tools;
 import net.kdt.pojavlaunch.utils.DownloadUtils;
 
+import java.io.File;
 import java.io.IOException;
 import java.util.List;
 
@@ -17,11 +21,19 @@ public class OptiFineUtils {
         }
     }
 
+    public static void addAutoInstallArgs(Intent intent, File modInstallerJar) {
+        intent.putExtra("javaArgs", "-javaagent:"+ Tools.DIR_DATA+"/forge_installer/forge_installer.jar"
+                + "=OFNPS" +// No Profile Suppression
+                " -jar "+modInstallerJar.getAbsolutePath());
+        intent.putExtra("skipDetectMod", true);
+    }
+
     public static class OptiFineVersions {
         public List<String> minecraftVersions;
         public List<List<OptiFineVersion>> optifineVersions;
     }
     public static class OptiFineVersion {
+        public String minecraftVersion;
         public String versionName;
         public String downloadUrl;
     }
diff --git a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/tasks/AsyncMinecraftDownloader.java b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/tasks/AsyncMinecraftDownloader.java
index b04c54055..74112fefd 100644
--- a/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/tasks/AsyncMinecraftDownloader.java
+++ b/app_pojavlauncher/src/main/java/net/kdt/pojavlaunch/tasks/AsyncMinecraftDownloader.java
@@ -46,7 +46,7 @@ public class AsyncMinecraftDownloader {
     /* Allows each downloading thread to have its own RECYCLED buffer */
     private final ConcurrentHashMap<Thread, byte[]> mThreadBuffers = new ConcurrentHashMap<>(5);
 
-    public AsyncMinecraftDownloader(@NonNull Activity activity, JMinecraftVersionList.Version version, String realVersion,
+    public AsyncMinecraftDownloader(Activity activity, JMinecraftVersionList.Version version, String realVersion,
                                     @NonNull DoneListener listener){ // this was there for a reason
         sExecutorService.execute(() -> {
             try {
@@ -58,7 +58,7 @@ public class AsyncMinecraftDownloader {
         });
     }
     /* we do the throws DownloaderException thing to avoid blanket-catching Exception as a form of anti-lazy-developer protection */
-    private void downloadGame(@NonNull Activity activity, JMinecraftVersionList.Version verInfo, String versionName) throws DownloaderException {
+    private void downloadGame(Activity activity, JMinecraftVersionList.Version verInfo, String versionName) throws DownloaderException {
         final String downVName = "/" + versionName + "/" + versionName;
 
         //Downloading libraries
@@ -88,7 +88,7 @@ public class AsyncMinecraftDownloader {
             verInfo = Tools.getVersionInfo(versionName);
 
             // THIS one function need the activity in the case of an error
-            if(!JRE17Util.installNewJreIfNeeded(activity, verInfo)){
+            if(activity != null && !JRE17Util.installNewJreIfNeeded(activity, verInfo)){
                 ProgressKeeper.submitProgress(ProgressLayout.DOWNLOAD_MINECRAFT, -1, -1);
                 throw new DownloaderException();
             }
diff --git a/app_pojavlauncher/src/main/res/values/strings.xml b/app_pojavlauncher/src/main/res/values/strings.xml
index da26fa683..5f75caf87 100644
--- a/app_pojavlauncher/src/main/res/values/strings.xml
+++ b/app_pojavlauncher/src/main/res/values/strings.xml
@@ -392,7 +392,7 @@
     <string name="create_profile_modded_versions">Modded versions</string>
     <string name="fabric_dl_loader_title">Select versions</string>
     <string name="of_dl_select_version">Select OptiFine version</string>
-    <string name="of_dl_failed_to_scrape">Failed to get the OptiFine download link</string>
+    <string name="of_dl_failed_to_scrape">Failed to collect data for OptiFine installation</string>
     <string name="of_dl_progress">Downloading %s</string>
     <string name="create_profile_optifine">Create OptiFine profile</string>
 </resources>
diff --git a/forge_installer/src/main/java/git/artdeell/forgeinstaller/Agent.java b/forge_installer/src/main/java/git/artdeell/forgeinstaller/Agent.java
index a9272cbd6..cc2d82d63 100644
--- a/forge_installer/src/main/java/git/artdeell/forgeinstaller/Agent.java
+++ b/forge_installer/src/main/java/git/artdeell/forgeinstaller/Agent.java
@@ -20,11 +20,12 @@ import javax.swing.JOptionPane;
 public class Agent implements AWTEventListener {
     private boolean forgeWindowHandled = false;
     private final boolean suppressProfileCreation;
-
+    private final boolean optiFineInstallation;
     private final Timer componentTimer = new Timer();
 
-    public Agent(boolean ps) {
-        this.suppressProfileCreation = ps;
+    public Agent(boolean nps, boolean of) {
+        this.suppressProfileCreation = !nps;
+        this.optiFineInstallation = of;
     }
 
     @Override
@@ -33,7 +34,7 @@ public class Agent implements AWTEventListener {
         Window window = windowEvent.getWindow();
         if(windowEvent.getID() == WindowEvent.WINDOW_OPENED) {
             if(!forgeWindowHandled) { // false at startup, so we will handle the first window as the Forge one
-                forgeWindowHandled =  handleForgeWindow(window);
+                forgeWindowHandled =  handleMainWindow(window);
                 if(forgeWindowHandled) {
                     componentTimer.cancel();
                     componentTimer.purge();
@@ -46,34 +47,47 @@ public class Agent implements AWTEventListener {
         }
     }
 
-    public boolean handleForgeWindow(Window window) {
+    public boolean handleMainWindow(Window window) {
         List<Component> components = new ArrayList<>();
         insertAllComponents(components, window, new MainWindowFilter());
         AbstractButton okButton = null;
         for(Component component : components) {
             if(component instanceof AbstractButton) {
                 AbstractButton abstractButton = (AbstractButton) component;
-                switch(abstractButton.getText()) {
-                    case "OK":
-                        okButton = abstractButton; // store the button, so we can press it after processing other stuff
-                        break;
-                    case "Install client":
-                        abstractButton.doClick(); // It should be the default, but let's make sure
-                }
-
+                abstractButton = optiFineInstallation ?
+                        handleOptiFineButton(abstractButton) :
+                        handleForgeButton(abstractButton);
+                if(abstractButton != null) okButton = abstractButton;
             }
         }
         if(okButton == null) {
             System.out.println("Failed to set all the UI components, wil try again in the next window");
-            System.exit(17);
             return false;
         }else{
-            ProfileFixer.storeProfile();
+            ProfileFixer.storeProfile(optiFineInstallation ? "OptiFine" : "forge");
             EventQueue.invokeLater(okButton::doClick); // do that after forge actually builds its window, otherwise we set the path too fast
             return true;
         }
     }
 
+
+    public AbstractButton handleForgeButton(AbstractButton abstractButton) {
+        switch(abstractButton.getText()) {
+            case "OK":
+                return  abstractButton; // return the button, so we can press it after processing other stuff
+            case "Install client":
+                abstractButton.doClick(); // It should be the default, but let's make sure
+        }
+        return null;
+    }
+
+    public AbstractButton handleOptiFineButton(AbstractButton abstractButton) {
+        if ("Install".equals(abstractButton.getText())) {
+            return abstractButton;
+        }
+        return null;
+    }
+
     public void handleDialog(Window window) {
         List<Component> components = new ArrayList<>();
         insertAllComponents(components, window, new DialogFilter()); // ensure that it's a JOptionPane dialog
@@ -84,7 +98,7 @@ public class Agent implements AWTEventListener {
             JOptionPane optionPane = (JOptionPane) components.get(0);
             if(optionPane.getMessageType() == JOptionPane.INFORMATION_MESSAGE) { // forge doesn't emit information messages for other reasons yet
                 System.out.println("The install was successful!");
-                ProfileFixer.reinsertProfile(suppressProfileCreation);
+                ProfileFixer.reinsertProfile(optiFineInstallation ? "OptiFine" : "forge", suppressProfileCreation);
                 System.exit(0); // again, forge doesn't call exit for some reason, so we do that ourselves here
             }
         }
@@ -102,8 +116,15 @@ public class Agent implements AWTEventListener {
     }
 
     public static void premain(String args, Instrumentation inst) {
+        boolean noProfileSuppression = false;
+        boolean optifine = false;
+        if(args != null ) {
+            noProfileSuppression = args.contains("NPS"); // No Profile Suppression
+            optifine = args.contains("OF"); // OptiFine
+        }
+        Agent agent = new Agent(noProfileSuppression, optifine);
         Toolkit.getDefaultToolkit()
-                .addAWTEventListener(new Agent(!"NPS".equals(args)), // No Profile Suppression
+                .addAWTEventListener(agent,
                         AWTEvent.WINDOW_EVENT_MASK);
     }
 }
diff --git a/forge_installer/src/main/java/git/artdeell/forgeinstaller/ProfileFixer.java b/forge_installer/src/main/java/git/artdeell/forgeinstaller/ProfileFixer.java
index 5228c0a2c..da0b1d4d1 100644
--- a/forge_installer/src/main/java/git/artdeell/forgeinstaller/ProfileFixer.java
+++ b/forge_installer/src/main/java/git/artdeell/forgeinstaller/ProfileFixer.java
@@ -15,23 +15,23 @@ public class ProfileFixer {
     private static final Random random = new Random();
     private static final Path profilesPath = Paths.get(System.getProperty("user.home"), ".minecraft", "launcher_profiles.json");
     private static JSONObject oldProfile = null;
-    public static void storeProfile() {
+    public static void storeProfile(String profileName) {
         try {
             JSONObject minecraftProfiles = new JSONObject(
                     new String(Files.readAllBytes(profilesPath),
                             StandardCharsets.UTF_8)
             );
             JSONObject profilesArray = minecraftProfiles.getJSONObject("profiles");
-            oldProfile = profilesArray.optJSONObject("forge", null);
+            oldProfile = profilesArray.optJSONObject(profileName, null);
         }catch (IOException | JSONException e) {
             System.out.println("Failed to store Forge profile: "+e);
         }
     }
 
-    private static String pickProfileName() {
-        return "forge"+random.nextInt();
+    private static String pickProfileName(String profileName) {
+        return profileName+random.nextInt();
     }
-    public static void reinsertProfile(boolean suppressProfileCreation) {
+    public static void reinsertProfile(String profileName, boolean suppressProfileCreation) {
             try {
                 JSONObject minecraftProfiles = new JSONObject(
                         new String(Files.readAllBytes(profilesPath),
@@ -41,8 +41,8 @@ public class ProfileFixer {
                 if(oldProfile != null) {
                     if(suppressProfileCreation) profilesArray.put("forge", oldProfile); // restore the old profile
                     else {
-                        String name = pickProfileName();
-                        while(profilesArray.has(name)) name = pickProfileName();
+                        String name = pickProfileName(profileName);
+                        while(profilesArray.has(name)) name = pickProfileName(profileName);
                         profilesArray.put(name, oldProfile); // restore the old profile under a new name
                     }
                 }else{