diff --git a/LibRay-PS3/core.py b/LibRay-PS3/core.py
index 66ba7fd..1e6f933 100644
--- a/LibRay-PS3/core.py
+++ b/LibRay-PS3/core.py
@@ -17,6 +17,7 @@
 # along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 import os
+import sys
 import gzip
 
 ORDER = 'big'
@@ -54,6 +55,21 @@ class IRD:
       self.header = ird.read(SECTOR*3)
       self.footer = ird.read(SECTOR)
       self.region_count = ird.read(1)
+      back = ird.tell()
+      prefix = bytes_to_int(ird.read(1))
+      length = prefix >> 1
+      if prefix & 0b00000001:
+        ird.seek(back)
+      
+      self.header = ird.read(length)
+      back = ird.tell()
+      prefix = bytes_to_int(ird.read(1))
+      length = prefix >> 1
+      ird.seek(back)
+      self.footer = ird.read(length)
+      self.region_count
+      print()
+      sys.exit()
       
       print(self.game_name, self.update_version, self.game_version, self.region_count)
 
@@ -67,10 +83,12 @@ class IRD:
         self.pic = ird.read(115)
       self.uid = ird.read(2)
 
+      print(self.pic)
       print(self.uid)
+      print(self.game_id)
     
     if filename != 'ird':
-      os.rm('ird')
+      os.remove('ird')
 
 
 
diff --git a/LibRay-PS3/libray-ps3.py b/LibRay-PS3/libray-ps3.py
index 2cfc7ab..9b5fbf7 100644
--- a/LibRay-PS3/libray-ps3.py
+++ b/LibRay-PS3/libray-ps3.py
@@ -41,9 +41,9 @@ def bprint(byte):
 
 if __name__ == '__main__':
 
-  #core.IRD('ird.ird')
+  core.IRD('ird')
 
-  #sys.exit()
+  sys.exit()
   
   bprint(b'\x00\x00\x00\x00')
   bprint(b'\x00\x00\x0c\xbf')
@@ -51,7 +51,7 @@ if __name__ == '__main__':
   bprint(b'\x00\x00s\xc2\x7f')
   bprint(b'\x00\x00s\xc2\x80')
 
-  data = bytes(bytearray.fromhex("c9c1ec71205c2a6e8adc19795f9bfbd8"))
+  data = bytes(bytearray.fromhex("02EE0CE9E4C7CC1AD739ACC0DB6A3AA1"))
   key  = bytes(bytearray.fromhex("380bcf0b53455b3c7817ab4fa3ba90ed"))
   iv   = bytes(bytearray.fromhex("69474772af6fdab342743aefaa186287"))
 
diff --git a/README.md b/README.md
index 2584c37..efd3ad5 100644
--- a/README.md
+++ b/README.md
@@ -10,3 +10,7 @@ A hackable, crossplatform, alternative to ISOTools and ISO-Rebuilder.
 
 
 [see also](http://www.psdevwiki.com/ps3/Bluray_disc#Encryption) ([archive.fo](https://archive.fo/hN1E6)) 
+
+[7bit encoded int / RLE / CLP](https://github.com/Microsoft/referencesource/blob/master/mscorlib/system/io/binaryreader.cs#L582-L600)
+
+clp = compressed length prefix