Since KitKat, Google has changed the policy of SMS Application. Only the default SMS application can write SMS, and the broadcast of SMS_RECEIVED can't abort anymore. All of SMS Blocker before KitKat can't work either.
This module revert the SMS bordercast mechanism to before, so you can still use the favoured SMS Blocker.
After install it, you need enable "Write SMS" permission in AppOps for SMS Blocker, otherwise SMS Blocker can't restore blocked SMS.
KitKat SMS Blocker Patch, Xposed for all devices (see above for details)
Xposed Package Name: com.czbix.xposed.kitkat_sms_patch
Current Stable Version: 1.5
Stable Release Date: 2015-05-10
Last Updated 2015-11-21