diff --git a/device/generic/rootfs_overlay/common/mnt/system/ko/loadsystemko.sh b/device/generic/rootfs_overlay/duo256m/mnt/system/ko/loadsystemko.sh
similarity index 100%
rename from device/generic/rootfs_overlay/common/mnt/system/ko/loadsystemko.sh
rename to device/generic/rootfs_overlay/duo256m/mnt/system/ko/loadsystemko.sh
diff --git a/device/generic/rootfs_overlay/duos/mnt/system/ko/loadsystemko.sh b/device/generic/rootfs_overlay/duos/mnt/system/ko/loadsystemko.sh
new file mode 100644
index 000000000..4f41f7684
--- /dev/null
+++ b/device/generic/rootfs_overlay/duos/mnt/system/ko/loadsystemko.sh
@@ -0,0 +1,37 @@
+#!/bin/sh
+${CVI_SHOPTS}
+#
+# Start to insert kernel modules
+#
+insmod /mnt/system/ko/cv181x_sys.ko
+insmod /mnt/system/ko/cv181x_base.ko
+insmod /mnt/system/ko/cv181x_rtos_cmdqu.ko
+insmod /mnt/system/ko/cv181x_fast_image.ko
+insmod /mnt/system/ko/cvi_mipi_rx.ko
+insmod /mnt/system/ko/snsr_i2c.ko
+insmod /mnt/system/ko/cv181x_vi.ko
+insmod /mnt/system/ko/cv181x_vpss.ko
+insmod /mnt/system/ko/cv181x_dwa.ko
+insmod /mnt/system/ko/cv181x_vo.ko
+insmod /mnt/system/ko/cv181x_mipi_tx.ko
+insmod /mnt/system/ko/cv181x_rgn.ko
+
+#insmod /mnt/system/ko/cv181x_wdt.ko
+insmod /mnt/system/ko/cv181x_clock_cooling.ko
+
+insmod /mnt/system/ko/cv181x_tpu.ko
+insmod /mnt/system/ko/cv181x_vcodec.ko
+insmod /mnt/system/ko/cv181x_jpeg.ko
+insmod /mnt/system/ko/cvi_vc_driver.ko MaxVencChnNum=9 MaxVdecChnNum=9
+#insmod /mnt/system/ko/cv181x_rtc.ko
+insmod /mnt/system/ko/cv181x_ive.ko
+
+#insmod /mnt/system/ko/3rd/gt9xx.ko
+
+echo 3 > /proc/sys/vm/drop_caches
+dmesg -n 4
+
+#usb hub control
+#/etc/uhubon.sh host
+
+exit $?