diff --git a/_pyren_launcher.py b/_pyren_launcher.py
index d59eba4..1aa26dd 100755
--- a/_pyren_launcher.py
+++ b/_pyren_launcher.py
@@ -55,7 +55,7 @@ if osname == 'android':
       import pip
     except ImportError:
       pass
-    pip.main(['install', 'pyjnius-u4-qpython'])
+    #pip.main(['install', 'pyjnius-u4-qpython'])
 
   if jnius_mode:
     try:
diff --git a/pyren/CHANGE_LOG.txt b/pyren/CHANGE_LOG.txt
old mode 100644
new mode 100755
diff --git a/pyren/README.md b/pyren/README.md
old mode 100644
new mode 100755
diff --git a/pyren/macro/init.txt b/pyren/macro/init.txt
old mode 100644
new mode 100755
diff --git a/pyren/mod_ddt_ecu.py b/pyren/mod_ddt_ecu.py
index 0220a81..3b53347 100755
--- a/pyren/mod_ddt_ecu.py
+++ b/pyren/mod_ddt_ecu.py
@@ -731,6 +731,12 @@ class DDTECU():
     if len(hexval)%2:
       hexval = '0'+hexval
 
+    #check bytescount
+    if len(hexval)/2 < d.BytesCount:
+      hexval = '00'*(d.BytesCount-len(hexval)/2) + hexval
+      #debug
+      #print '#', d.BytesCount, ':', hexval
+
     #revert byte order if little endian
     if littleEndian:
       a = hexval
@@ -855,6 +861,8 @@ class DDTECU():
         break
 
     if rcmd == '':
+      #debug
+      print res, d, self.req4data.keys ()
       return 'ERROR'
 
     if self.datas[d].BytesASCII: