diff --git a/tools/firmware-utils/src/mktplinkfw2.c b/tools/firmware-utils/src/mktplinkfw2.c
index dead49e7af..35db848bba 100644
--- a/tools/firmware-utils/src/mktplinkfw2.c
+++ b/tools/firmware-utils/src/mktplinkfw2.c
@@ -146,6 +146,12 @@ static struct flash_layout layouts[] = {
 		.kernel_la	= 0x80000000,
 		.kernel_ep	= 0x80000000,
 		.rootfs_ofs	= 0x140000,
+	}, {
+		.id		= "8MSUmtk", /* Split U-Boot OS */
+		.fw_max_len	= 0x770000,
+		.kernel_la	= 0x80000000,
+		.kernel_ep	= 0x80000000,
+		.rootfs_ofs	= 0x140000,
 	}, {
 		.id		= "8MLmtk",
 		.fw_max_len	= 0x7b0000,