Not able to disable checksum verification at master in mysql5.6.16 GTID based replication (no replies)

Hi ,
I m getting one error and unable to trace it.
In my master server i have disabled master-verify-checksum but still show binlog event not ignoring it..
mysql> show global variables like ‘%check%’;
+—————————+——–+
| Variable_name | Value |
+—————————+——–+
| binlog_checksum | NONE |
| foreign_key_checks | ON |
| innodb_checksum_algorithm | innodb |
| innodb_checksums | ON |
| innodb_file_format_check | ON |
| master_verify_checksum | OFF |
| slave_checkpoint_group | 512 |
| slave_checkpoint_period | 300 |
| slave_sql_verify_checksum | OFF |
| unique_checks | ON |
mysql> show binlog events in ‘mysql225-bin.000002′;
ERROR 1220 (HY000): Error when executing command SHOW BINLOG EVENTS: Wrong offset or I/O error