Update README.md

README.md

@@ -1,24 +1,53 @@
 # [Guide] How to Downgrade apps on AppStore with iTunes 12.6.5 & Charles Proxy (no Jailbreak).
 
-### Table of contents
+# Table of contents
 [I. Notes](#Notes)
 
 [II. Requirements](#requirements)
 
+[III. Let's get into it](#getintoit)
 
 
 
 
-<a name = "I"></a>
-# I. Notes
+## I. Notes
 <a name="Notes"></a>
 
-- The Guide seems complicated, but only need to do Step 1 to 3 for the first time. And there are 4 steps in total.
-- Jailbreak is NOT needed. Since the iPA comes directly from iTunes, it's encrypted and can be installed without Sideload. The IPA is 100% legit.
-- You can get the old version of any apps on as long as that version is still **available** on AppStore.
+- The Guide seems complicated, but you only need to do Step 1 to 3 for the first time. And there are 4 steps in total.
+- Jailbreak is **NOT** needed. Since the iPA comes directly from iTunes, it's encrypted and can be installed without Sideload. The IPA is 100% legit.
+- You can get the old version of any apps on AppStore as long as that version is still **available** on AppStore.
 
 
-<a name = "I"></a>
-# II. Requirements
+## II. Requirements
 <a name="requirements"></a>
-- 
+- **iTunes 12.6.5** - the latest version of iTunes that supports download apps. Download here (directly from Apple).
+- **A Windows machine**: Windows XP/7/10 are supported, not tested on Windows 11 yet.
+ 
+_(Why Windows only? - Apple killed iTunes 12.6.5 on macOS. Even if you manage to get iTunes 12.6.5 on your Mac, the download feature just will does not work.)_
+- **Charles Proxy**. I use version 4.2.7 but I don't think it's matter. _(No need to crack Charles Proxy)_
+- **An Apple ID for iTunes**. Use a clone ID if you like. Keep in mind that if you switch to another ID, you'll need to re-do the procedure from **Step 3**.
+- The `Build Number Version` of the app you want to downgrade. It is a chain of 9 numbers representing the version of the application. You always can get the `Build number Version` most apps on AppStore from [Tool Lantency](https://tools.lancely.tech/apple/app-search). See more info in pictures below:
+- Pic 1, 2, 3
+
+
+## III. Let's get into it
+<a name="getintoit"></a>
+### 1. Preparing the necessary tools.
+- Nothing special about Charles Proxy so I'll focus on iTunes. 
+- After you install iTunes succesfully, go to **Edit** => **Preferences** => **Avanced** => Untick **Check for new software updates automatically** to prevent iTunes from asking for update.
+- If you get an error about **Library.itl** when opening iTunes: Go to `“C:\Users\Username\My Music\iTunes\”` and delete the existed **Library.itl**
+- Login into iTunes with your prepared Apple ID.
+- pic 4
+
+### 2. Install Charles Root Certificate
+- pic 5678
+
+### 3. Create a Breakpoint
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