diff --git a/package/boot/uboot-envtools/files/ramips b/package/boot/uboot-envtools/files/ramips
index 70d70dfed0..6c649bfacc 100644
--- a/package/boot/uboot-envtools/files/ramips
+++ b/package/boot/uboot-envtools/files/ramips
@@ -32,7 +32,8 @@ ampedwireless,ally-r1900k)
 	ubootenv_add_uci_config "/dev/mtd1" "0x0" "0x1000" "0x20000" "4"
 	;;
 beeline,smartbox-giga|\
-beeline,smartbox-turbo)
+beeline,smartbox-turbo|\
+rostelecom,rt-sf-1)
 	ubootenv_add_uci_config "/dev/mtd0" "0x80000" "0x1000" "0x20000"
 	;;
 buffalo,wsr-1166dhp|\
diff --git a/target/linux/ramips/dts/mt7621_rostelecom_rt-sf-1.dts b/target/linux/ramips/dts/mt7621_rostelecom_rt-sf-1.dts
new file mode 100644
index 0000000000..c476cf9495
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_rostelecom_rt-sf-1.dts
@@ -0,0 +1,30 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621_sercomm_dxx_nand_256m.dtsi"
+
+/ {
+	compatible = "rostelecom,rt-sf-1", "mediatek,mt7621-soc";
+	model = "Rostelecom RT-SF-1";
+};
+
+&pcie0 {
+	wifi@0,0 {
+		nvmem-cells = <&macaddr_factory_21000>;
+		nvmem-cell-names = "mac-address";
+		mac-address-increment = <(3)>;
+	};
+};
+
+&pcie1 {
+	wifi@0,0 {
+		nvmem-cells = <&macaddr_factory_21000>;
+		nvmem-cell-names = "mac-address";
+		mac-address-increment = <(2)>;
+	};
+};
+
+&gmac1 {
+	nvmem-cells = <&macaddr_factory_21000>;
+	nvmem-cell-names = "mac-address";
+	mac-address-increment = <(11)>;
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index de10da7cb6..e7b38aaacf 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -1740,6 +1740,19 @@ define Device/renkforce_ws-wn530hp3-a
 endef
 TARGET_DEVICES += renkforce_ws-wn530hp3-a
 
+define Device/rostelecom_rt-sf-1
+  $(Device/sercomm_dxx)
+  IMAGE_SIZE := 32768k
+  SERCOMM_HWID := DKG
+  SERCOMM_HWVER := 10110
+  SERCOMM_SWVER := 1026
+  DEVICE_VENDOR := Rostelecom
+  DEVICE_MODEL := RT-SF-1
+  DEVICE_PACKAGES := kmod-mt7603 kmod-mt7615e kmod-mt7615-firmware \
+	kmod-usb3 uboot-envtools
+endef
+TARGET_DEVICES += rostelecom_rt-sf-1
+
 define Device/samknows_whitebox-v8
   $(Device/dsa-migration)
   $(Device/uimage-lzma-loader)
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
index a3c233a20f..98db9fb9fc 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
@@ -25,7 +25,8 @@ asus,rt-n56u-b1)
 	;;
 beeline,smartbox-flash|\
 beeline,smartbox-giga|\
-beeline,smartbox-turbo)
+beeline,smartbox-turbo|\
+rostelecom,rt-sf-1)
 	ucidef_set_led_netdev "wan" "wan" "blue:wan" "wan"
 	;;
 belkin,rt1800)
diff --git a/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount b/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount
index 99b318a922..597c2da60f 100755
--- a/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount
+++ b/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount
@@ -8,7 +8,8 @@ boot() {
 		[ -n "$(fw_printenv bootcount bootchanged 2>/dev/null)" ] &&\
 			echo -e "bootcount\nbootchanged\n" | /usr/sbin/fw_setenv -s -
 		;;
-	beeline,smartbox-turbo)
+	beeline,smartbox-turbo|\
+	rostelecom,rt-sf-1)
 		[[ $(hexdump -n 1 -e '/1 "%1d"' -s $((0x20001)) /dev/mtd3) == \
 			$((0xff)) ]] || printf '\xff' | dd of=/dev/mtdblock3 \
 			count=1 bs=1 seek=$((0x20001))
diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
index d380ea66f7..95bba16194 100755
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -95,6 +95,7 @@ platform_do_upgrade() {
 	netgear,wax202|\
 	netis,wf2881|\
 	raisecom,msg1500-x-00|\
+	rostelecom,rt-sf-1|\
 	sercomm,na502|\
 	sercomm,na502s|\
 	sim,simax1800t|\