diff --git a/core/version_defaults.mk b/core/version_defaults.mk
index 22a8e05250..13098a0429 100644
--- a/core/version_defaults.mk
+++ b/core/version_defaults.mk
@@ -39,9 +39,9 @@ ifdef INTERNAL_BUILD_ID_MAKEFILE
   include $(INTERNAL_BUILD_ID_MAKEFILE)
 endif
 
-DEFAULT_PLATFORM_VERSION := SP1A
-MIN_PLATFORM_VERSION := SP1A
-MAX_PLATFORM_VERSION := SP1A
+DEFAULT_PLATFORM_VERSION := TP1A
+MIN_PLATFORM_VERSION := TP1A
+MAX_PLATFORM_VERSION := TP1A
 
 ALLOWED_VERSIONS := $(call allowed-platform-versions,\
   $(MIN_PLATFORM_VERSION),\
@@ -93,7 +93,8 @@ PLATFORM_VERSION_LAST_STABLE := 12
 
 # These are the current development codenames, if the build is not a final
 # release build.  If this is a final release build, it is simply "REL".
-PLATFORM_VERSION_CODENAME.SP1A := REL
+
+PLATFORM_VERSION_CODENAME.TP1A := T
 
 ifndef PLATFORM_VERSION_CODENAME
   PLATFORM_VERSION_CODENAME := $(PLATFORM_VERSION_CODENAME.$(TARGET_PLATFORM_VERSION))