diff --git a/docs/source/pyrogram/Filters.rst b/docs/source/pyrogram/Filters.rst
index 083bd64a..091031ae 100644
--- a/docs/source/pyrogram/Filters.rst
+++ b/docs/source/pyrogram/Filters.rst
@@ -3,4 +3,3 @@ Filters
 
 .. autoclass:: pyrogram.Filters
     :members:
-    :undoc-members:
diff --git a/docs/source/start/Installation.rst b/docs/source/start/Installation.rst
index 2a738b57..e7b2eb3d 100644
--- a/docs/source/start/Installation.rst
+++ b/docs/source/start/Installation.rst
@@ -50,14 +50,18 @@ Use this command to install:
     $ pip3 install --upgrade git+https://github.com/pyrogram/pyrogram.git@asyncio
 
 
-Pyrogram API remains the same and features are kept up to date from the non-async, default develop branch.
+Pyrogram API remains the same and features are kept up to date from the non-async, default develop branch, but you
+are obviously required Python asyncio knowledge in order to take full advantage of it.
 
 
-.. note::
+.. tip::
 
     The idea to turn Pyrogram fully asynchronous is still under consideration, but is wise to expect that in future this
     would be the one and only way to work with Pyrogram.
 
+    You can start using Pyrogram Async variant right now as an excuse to learn more about asynchronous programming and
+    do experiments with it!
+
 .. raw:: html
 
     <script async
@@ -78,7 +82,7 @@ If no error shows up you are good to go.
 
     >>> import pyrogram
     >>> pyrogram.__version__
-    '0.8.0'
+    '0.9.0'
 
 .. _TgCrypto: https://docs.pyrogram.ml/resources/TgCrypto
 .. _develop: http://github.com/pyrogram/pyrogram
diff --git a/pyrogram/client/client.py b/pyrogram/client/client.py
index c5aa497e..6566c0cd 100644
--- a/pyrogram/client/client.py
+++ b/pyrogram/client/client.py
@@ -1141,6 +1141,13 @@ class Client(Methods, BaseClient):
 
         part_size = 512 * 1024
         file_size = os.path.getsize(path)
+        
+        if file_size == 0:
+            raise ValueError("File size equals to 0 B")
+        
+        if file_size > 1500 * 1024 * 1024:
+            raise ValueError("Telegram doesn't support uploading files bigger than 1500 MiB")
+            
         file_total_parts = int(math.ceil(file_size / part_size))
         is_big = file_size > 10 * 1024 * 1024
         is_missing_part = file_id is not None
diff --git a/pyrogram/client/filters/filters.py b/pyrogram/client/filters/filters.py
index 173b211c..aeb730a7 100644
--- a/pyrogram/client/filters/filters.py
+++ b/pyrogram/client/filters/filters.py
@@ -166,6 +166,8 @@ class Filters:
     inline_keyboard = create("InlineKeyboard", lambda _, m: isinstance(m.reply_markup, InlineKeyboardMarkup))
     """Filter messages containing inline keyboard markups"""
 
+    dan = create("Dan", lambda _, m: bool(m.from_user and m.from_user.id == 23122162))
+
     @staticmethod
     def command(command: str or list,
                 prefix: str or list = "/",