diff --git a/geant4/LEMuSR/G4Modified/Readme.txt b/geant4/LEMuSR/G4Modified/Readme.txt
index d341a20..5b23fd6 100644
--- a/geant4/LEMuSR/G4Modified/Readme.txt
+++ b/geant4/LEMuSR/G4Modified/Readme.txt
@@ -5,7 +5,4 @@ Copy files in the following directories:
 G4El_EqRhs         -----> $G4Install/source/geometry/magneticfield /src and /include
 G4El_UsualEqRhs    -----> $G4Install/source/geometry/magneticfield /src and /include
 G4ChordFinder      -----> $G4Install/source/geometry/magneticfield /src and /include
-G4ParticleGun      -----> $G4Install/source/event                  /src and /include
 
-
-track/ is the geant4.6.2 version of $G4Install/source/track directory and should be updated
\ No newline at end of file
diff --git a/geant4/LEMuSR/G4Modified/update.sh b/geant4/LEMuSR/G4Modified/update.sh
index 83e673c..50a80c1 100644
--- a/geant4/LEMuSR/G4Modified/update.sh
+++ b/geant4/LEMuSR/G4Modified/update.sh
@@ -1,45 +1,35 @@
 
 
-
+# In order to handle the LEMuSR new types of field
 cp G4ChordFinder.cc    $G4INSTALL/source/geometry/magneticfield/src/
 cp G4ChordFinder.hh    $G4INSTALL/source/geometry/magneticfield/include/
 
+# For the FieldHasMagComponent boolean variable
 cp G4FieldManager.cc     $G4INSTALL/source/geometry/magneticfield/src/
 cp G4FieldManager.hh    $G4INSTALL/source/geometry/magneticfield/include/
 cp G4FieldManager.icc    $G4INSTALL/source/geometry/magneticfield/include/
 
-
+# Better equations of motions including time update
 cp G4El_EqRhs.cc    $G4INSTALL/source/geometry/magneticfield/src/
 cp G4El_EqRhs.hh     $G4INSTALL/source/geometry/magneticfield/include/
 
 cp G4El_UsualEqRhs.cc    $G4INSTALL/source/geometry/magneticfield/src/
 cp G4El_UsualEqRhs.hh     $G4INSTALL/source/geometry/magneticfield/include/
 
-
-cp G4VDecayChannel.cc    $G4INSTALL/source/particles/management/src/
-cp G4VDecayChannel.hh    $G4INSTALL/source/particles/management/include/
+# Enable the muon decay channel for "Mu" particle
 cp G4MuonDecayChannel.cc    $G4INSTALL/source/particles/management/src/
 cp G4MuonDecayChannel.hh    $G4INSTALL/source/particles/management/include/
-cp G4MuonDecayChannelWithSpin.cc    $G4INSTALL/source/particles/management/src/
-cp G4MuonDecayChannelWithSpin.hh    $G4INSTALL/source/particles/management/include/
-
-cp G4Muonium.cc              $G4INSTALL/source/particles/leptons/src/
-cp G4Muonium.hh               $G4INSTALL/source/particles/leptons/include/
 
 
 cd $G4INSTALL/source/geometry/magneticfield/
-#gmake clean
+gmake clean
 gmake
 
+
 cd $G4INSTALL/source/particles/management/
-#gmake clean
+gmake clean
 gmake
 
-cd $G4INSTALL/source/particles/leptons/
-#gmake clean
-gmake
-
-
 
 
 cd ~/LEMuSR/G4Modified