AssetBundle not completely cleared in iOS

Hi all,

I'm working on an app that lets the user manage levels by downloading and deleting them as they wish. I use AssetBundles for each of the levels and they are stored on my server as level1, level2, level3. I use Caching.ClearAllCachedVersions("levelname") to delete each level from the cache when a user presses delete. It worked for all previously until I added 2 new assetbundles to the server. Now, it deletes some while some remain in the cache. I know because when I turn off the internet, it still loads it. The funny thing is I'm only having this problem on iOS. Here is my code.

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.IO;
using UnityEngine.Networking;
using UnityEngine.Video;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
using UnityEngine.EventSystems;

public class AssetDownload : MonoBehaviour {

public static AssetBundle bundle;
public static VideoClip clip1;
public static string scene1, scene2, scene3;
public Text textxx,infoPanelText,sliderText;
public Button downldBtn, openBtn, deleteBtn;
public Slider slider;

public static AssetDownload instance;

void Start(){
instance = this;
}

public void DownloadVideo(){

AssetBundle[] bundles = Resources.FindObjectsOfTypeAll<AssetBundle>();
if(bundles.Length > 0)
{
bundles[0].Unload(true);
}

string strText = infoPanelText.text;
if(strText == "SCENE 1")
{
StartCoroutine(InstantiateObject("level1","scene1"));
}
else if (strText == "SCENE 2")
{
StartCoroutine(InstantiateObject("level2","scene2"));
}
else if (strText == "SCENE 3")
{
StartCoroutine(InstantiateObject("level3", "scene3"));
}
}

public IEnumerator InstantiateObject(string str1, string scenename)

{
using (UnityWebRequest uwr = UnityWebRequest.GetAssetBundle("http://www.xxxabc.com/defghi/"+str1,0,0))
{

UnityWebRequestAsyncOperation request = uwr.SendWebRequest();

while (!request.isDone)
{
float progress = Mathf.Clamp01(request.progress / .8f);
Debug.Log(progress);
slider.value = progress;
if(progress > 0)
{
slider.gameObject.SetActive(true);
textxx.text = "Downloading...";
}
yield return null;
}

if (uwr.isNetworkError || uwr.isHttpError)
{
textxx2.text = "Error: " + uwr.error + " . Check your internet.";
}
else
{
// Get downloaded asset bundle
bundle = DownloadHandlerAssetBundle.GetContent(uwr);

string[] scenePaths = bundle.GetAllScenePaths();
scenename = System.IO.Path.GetFileNameWithoutExtension(scenePaths[0]);
textxx.text = "DOWNLOADED. Response Code Lev 1: " + uwr.responseCode;

}
print("Response Code Lev 1: " + uwr.responseCode);

string url = "http://www.xxxabc.com/defghi/";
if(uwr.responseCode == 0 && Caching.IsVersionCached(url + str1, 0))
{
SceneManager.LoadScene(scenename);
}
}
}

//This is called when I press delete for the level
public void ClearCache(){

/*
* First we check if there is a loaded bundle before deleting
* There can only be 1 bundle of same name cos we always unload in download
*/
AssetBundle[] bundles = Resources.FindObjectsOfTypeAll<AssetBundle>();

string strText = infoPanelText.text;
if (strText == "SCENE 1")
{
if (bundles.Length > 0 && bundles[0].name == "level1")
{
bundle.Unload(true);
}
Caching.ClearAllCachedVersions("level1");
}
else if (strText == "SCENE 2")
{
if (bundles.Length > 0 && bundles[0].name == "level2")
{
bundle.Unload(true);
}
Caching.ClearAllCachedVersions("level2");
}
else if (strText == "SCENE 3")
{
if (bundles.Length > 0 && bundles[0].name == "level3")
{
bundle.Unload(true);
}
Caching.ClearAllCachedVersions("level3");
}
}
}

 

Could you perhaps edit your post and put the code inside code-tags? This makes it way easier to read.
https://forum.unity.com/threads/using-code-tags-properly.143875/