diff --git a/build.properties b/build.properties
index dc2208b..53e8c1c 100644
--- a/build.properties
+++ b/build.properties
@@ -29,4 +29,4 @@
 icu4j.plugin.impl.version.string=3.8.1
 copyright.eclipse=Licensed Materials - Property of IBM \n (C) Copyright IBM Corp. 2000, 2010. All Rights Reserved. \n IBM is a registered trademark of IBM Corp.
 
-icu4j.eclipse.build.version.string=3.8.1.v20100112
\ No newline at end of file
+icu4j.eclipse.build.version.string=3.8.1.v20100525
\ No newline at end of file
diff --git a/src/com/ibm/icu/dev/test/timezone/TimeZoneTest.java b/src/com/ibm/icu/dev/test/timezone/TimeZoneTest.java
index 9836b0a..9710ca7 100644
--- a/src/com/ibm/icu/dev/test/timezone/TimeZoneTest.java
+++ b/src/com/ibm/icu/dev/test/timezone/TimeZoneTest.java
@@ -107,7 +107,7 @@
     public void TestShortZoneIDs() throws Exception {
 
         ZoneDescriptor[] JDK_116_REFERENCE_LIST = {
-            new ZoneDescriptor("MIT", -660, false), // updated to false when merging 2009u
+            new ZoneDescriptor("MIT", -660, true), // updated to false when merging 2010j
             new ZoneDescriptor("HST", -600, false),
             new ZoneDescriptor("AST", -540, true),
             new ZoneDescriptor("PST", -480, true),
@@ -137,7 +137,7 @@
             // PLT behaves differently under different JDKs, so we don't check it
             // new ZoneDescriptor("PLT", 300, false), // updated Oct 2003 aliu
             new ZoneDescriptor("IST", 330, false),
-            new ZoneDescriptor("BST", 360, true), // updated Oct 2009 yoshito
+            new ZoneDescriptor("BST", 360, false), // updated May 2010 - no DST in year 2010+
             new ZoneDescriptor("VST", 420, false),
             new ZoneDescriptor("CTT", 480, false), // updated Oct 2003 aliu
             new ZoneDescriptor("JST", 540, false),
diff --git a/src/com/ibm/icu/impl/data/icudata.jar b/src/com/ibm/icu/impl/data/icudata.jar
index 3282dd1..cdce91e 100755
--- a/src/com/ibm/icu/impl/data/icudata.jar
+++ b/src/com/ibm/icu/impl/data/icudata.jar
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:2ac846059fc0369353964a49054ce4490eba2b3de2be3fb4b0e79f2c37da0926
-size 5460885
+oid sha256:fc44b1203dde80ce45566deee764eb77bc69f8dc2f87e72a07f36798846862fa
+size 5450591