diff --git a/src/mainboard/google/rex/chromeos-debug-fsp.fmd b/src/mainboard/google/rex/chromeos-debug-fsp.fmd
index 37785fd..89d1d58 100644
--- a/src/mainboard/google/rex/chromeos-debug-fsp.fmd
+++ b/src/mainboard/google/rex/chromeos-debug-fsp.fmd
@@ -8,7 +8,6 @@
 			VBLOCK_A 8K
 			FW_MAIN_A(CBFS)
 			RW_FWID_A 64
-			ME_RW_A(CBFS) 4000K
 		}
 		RW_MISC 1M {
 			UNIFIED_MRC_CACHE(PRESERVE) 128K {
@@ -36,7 +35,6 @@
 			VBLOCK_B 8K
 			FW_MAIN_B(CBFS)
 			RW_FWID_B 64
-			ME_RW_B(CBFS) 4000K
 		}
 		RW_LEGACY(CBFS) 1M
 		RW_UNUSED 3M
diff --git a/src/mainboard/google/rex/chromeos.fmd b/src/mainboard/google/rex/chromeos.fmd
index 6319553..c104cde 100644
--- a/src/mainboard/google/rex/chromeos.fmd
+++ b/src/mainboard/google/rex/chromeos.fmd
@@ -8,7 +8,6 @@
 			VBLOCK_A 8K
 			FW_MAIN_A(CBFS)
 			RW_FWID_A 64
-			ME_RW_A(CBFS) 4000K
 		}
 		RW_MISC 1M {
 			UNIFIED_MRC_CACHE(PRESERVE) 128K {
@@ -36,7 +35,6 @@
 			VBLOCK_B 8K
 			FW_MAIN_B(CBFS)
 			RW_FWID_B 64
-			ME_RW_B(CBFS) 4000K
 		}
 		RW_LEGACY(CBFS) 1M
 		RW_UNUSED 4M
diff --git a/src/mainboard/google/rex/chromeos4es-debug-fsp.fmd b/src/mainboard/google/rex/chromeos4es-debug-fsp.fmd
index 3fbee83..c9e5984 100644
--- a/src/mainboard/google/rex/chromeos4es-debug-fsp.fmd
+++ b/src/mainboard/google/rex/chromeos4es-debug-fsp.fmd
@@ -8,11 +8,6 @@
 			VBLOCK_A 8K
 			FW_MAIN_A(CBFS)
 			RW_FWID_A 64
-#if CONFIG_BOARD_GOOGLE_MODEL_REX_EC_ISH
-			ME_RW_A(CBFS) 4500K
-#else
-			ME_RW_A(CBFS) 4400K
-#endif
 		}
 		# This section starts at the 16M boundary in SPI flash.
 		# MTL does not support a region crossing this boundary,
@@ -22,11 +17,6 @@
 			VBLOCK_B 8K
 			FW_MAIN_B(CBFS)
 			RW_FWID_B 64
-#if CONFIG_BOARD_GOOGLE_MODEL_REX_EC_ISH
-			ME_RW_B(CBFS) 4500K
-#else
-			ME_RW_B(CBFS) 4400K
-#endif
 		}
 		RW_MISC 1M {
 			UNIFIED_MRC_CACHE(PRESERVE) 128K {
diff --git a/src/mainboard/google/rex/chromeos4es.fmd b/src/mainboard/google/rex/chromeos4es.fmd
index 113bc72..d7d882d 100644
--- a/src/mainboard/google/rex/chromeos4es.fmd
+++ b/src/mainboard/google/rex/chromeos4es.fmd
@@ -8,11 +8,6 @@
 			VBLOCK_A 8K
 			FW_MAIN_A(CBFS)
 			RW_FWID_A 64
-#if CONFIG_BOARD_GOOGLE_MODEL_REX_EC_ISH
-			ME_RW_A(CBFS) 4500K
-#else
-			ME_RW_A(CBFS) 4400K
-#endif
 		}
 		# This section starts at the 16M boundary in SPI flash.
 		# MTL does not support a region crossing this boundary,
@@ -22,11 +17,6 @@
 			VBLOCK_B 8K
 			FW_MAIN_B(CBFS)
 			RW_FWID_B 64
-#if CONFIG_BOARD_GOOGLE_MODEL_REX_EC_ISH
-			ME_RW_B(CBFS) 4500K
-#else
-			ME_RW_B(CBFS) 4400K
-#endif
 		}
 		RW_MISC 1M {
 			UNIFIED_MRC_CACHE(PRESERVE) 128K {