diff --git a/README.md b/README.md
index 21fda7b..4e08f56 100644
--- a/README.md
+++ b/README.md
@@ -21,7 +21,13 @@ git clone https://github.com/Oros42/IMSI-catcher.git
 # or wget https://github.com/Oros42/IMSI-catcher/archive/master.zip && unzip -q master.zip
 
 sudo apt install python-numpy python-scipy python-scapy
+```
 
+For Debian Testing (10) and Ubuntu 18.04+ :  
+See https://osmocom.org/projects/gr-gsm/wiki/Installation  
+
+For older Debian and Ubuntu :  
+```
 sudo add-apt-repository -y ppa:ptrkrysik/gr-gsm
 sudo apt update
 sudo apt install gr-gsm
diff --git a/simple_IMSI-catcher.py b/simple_IMSI-catcher.py
index 7d76bfc..ee3b510 100644
--- a/simple_IMSI-catcher.py
+++ b/simple_IMSI-catcher.py
@@ -2,7 +2,7 @@
 # -*- coding: utf-8 -*-
 # Author: Oros
 # Contributors : puyoulu, 1kali2kali, petterreinholdtsen
-# 2017/09/07
+# 2018/08/18
 # License : CC0 1.0 Universal
 
 """
@@ -10,54 +10,6 @@ This program shows you IMSI numbers of cellphones around you.
 
 
 /!\ This program was made to understand how GSM network work. Not for bad hacking !
-
-
-What you need :
-1 PC
-1 USB DVB-T key (RTL2832U) with antenna (less than 15$) or a OsmocomBB phone or HackRf
-
-
-Setup :
-
-sudo apt install python-numpy python-scipy python-scapy
-
-sudo add-apt-repository -y ppa:ptrkrysik/gr-gsm
-sudo apt update
-sudo apt install gr-gsm
-
-If gr-gsm failled to setup. Try this setup : https://github.com/ptrkrysik/gr-gsm/wiki/Installation
-
-Run :
-
-# Open 2 terminals.
-# In terminal 1
-sudo python simple_IMSI-catcher.py
-
-# In terminal 2
-airprobe_rtlsdr.py
-# Now, change the frequency and stop it when you have output like :
-# 15 06 21 00 01 f0 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
-# 25 06 21 00 05 f4 f8 68 03 26 23 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b 2b
-# 49 06 1b 95 cc 02 f8 02 01 9c c8 03 1e 57 a5 01 79 00 00 1c 13 2b 2b
-# ...
-#
-# Now, watch terminal 1 and wait. IMSI numbers should appear :-)
-# If nothing appears after 1 min, change the frequency.
-#
-# Doc : https://fr.wikipedia.org/wiki/Global_System_for_Mobile_Communications
-# Example of frequency : 9.288e+08 Bouygues
-
-# You can watch GSM packet with
-sudo wireshark -k -Y '!icmp && gsmtap' -i lo
-
-
-Links :
-
-Setup of Gr-Gsm : http://blog.nikseetharaman.com/gsm-network-characterization-using-software-defined-radio/
-Frequency : https://fr.wikipedia.org/wiki/Global_System_for_Mobile_Communications
-Scapy : http://secdev.org/projects/scapy/doc/usage.html
-IMSI : https://fr.wikipedia.org/wiki/IMSI
-Realtek RTL2832U : http://doc.ubuntu-fr.org/rtl2832u and http://doc.ubuntu-fr.org/rtl-sdr
 """
 
 import ctypes