diff --git a/san b/san
index 7f85fc4..f5cd321 100644
--- a/san
+++ b/san
@@ -69,10 +69,6 @@ disable_wd()
 #   Firmware flash.
 #
 ACRAMFS=/tmp/acramfs.bin
-MMC_ACTIVE_DEV=/dev/mmc_Active
-MMC_UPDATE_DEV=/dev/mmc_Update
-SWUP_DEV=/dev/swupdev
-SWUP_PROC=/proc/swupdev
 
 set_image_dir()
 {
@@ -109,6 +105,15 @@ download_firmware()
 
 update_firmware()
 {
+    local MMC_ACTIVE_DEV=/dev/mmc_Active
+    local MMC_UPDATE_DEV=/dev/mmc_Update
+    local SWUP_DEV=/dev/swupdev
+    local SWUP_PROC=/proc/swupdev
+
+    if [ "$ROKU_PLATFORM" == "rockett" ]; then
+        MMC_UPDATE_DEV=/dev/mtdblock_Update
+    fi
+
     if [ -c $SWUP_DEV ]; then
         dd if=${ACRAMFS} of=$SWUP_DEV bs=65536
         echo -n memlock >$SWUP_PROC