diff --git a/tc_utils.sh b/tc_utils.sh
index a77ca88..809c79e 100644
--- a/tc_utils.sh
+++ b/tc_utils.sh
@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 #
-# Copyright (c) 2020-2023, Arm Limited. All rights reserved.
+# Copyright (c) 2020-2024, Arm Limited. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
 #
@@ -17,14 +17,14 @@
 scp_ram_addr=0x0bd80000
 
 rss_rom_addr=0x11000000
-vmmaddrwidth=23
+vmmaddrwidth=19
 rvbaddr_lw=0x0000
 rvbaddr_up=0x0000
 
 # AP bl1 0x00 is mapped to 0x70000000 in RSS memory map
 ap_bl1_flash_load_addr=0x70000000
-ap_bl1_flash_size=0x80000
-rss_revision="199e090f8"
+ap_bl1_flash_size=0x20000
+rss_revision="4ab7a20"
 
 # Hafnium build repo containing Secure hafnium binaries
 spm_secure_out_dir=secure_tc_clang