diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index ccf67a1ce9..8e742a935d 100644
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -85,7 +85,6 @@ TARGET_DEVICES += wt3020-4M
 
 define Device/wt3020-8M
   DTS := WT3020-8M
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   IMAGES += factory.bin
   IMAGE/factory.bin := $$(IMAGE/sysupgrade.bin) | poray-header -B WT3020 -F 8M
   DEVICE_TITLE := Nexx WT3020 (8MB)
@@ -162,49 +161,42 @@ TARGET_DEVICES += microwrt
 
 define Device/mt7620a
   DTS := MT7620a
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := MediaTek MT7620a EVB
 endef
 TARGET_DEVICES += mt7620a
 
 define Device/mt7620a_mt7610e
   DTS := MT7620a_MT7610e
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := MediaTek MT7620a + MT7610e EVB
 endef
 TARGET_DEVICES += mt7620a_mt7610e
 
 define Device/mt7620a_mt7530
   DTS := MT7620a_MT7530
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := MediaTek MT7620a + MT7530 EVB
 endef
 TARGET_DEVICES += mt7620a_mt7530
 
 define Device/mt7620a_v22sg
   DTS := MT7620a_V22SG
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := MediaTek MT7620a V22SG
 endef
 TARGET_DEVICES += mt7620a_v22sg
 
 define Device/rp-n53
   DTS := RP-N53
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Asus RP-N53
 endef
 TARGET_DEVICES += rp-n53
 
 define Device/cf-wr800n
   DTS := CF-WR800N
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Comfast CF-WR800N
 endef
 TARGET_DEVICES += cf-wr800n
 
 define Device/cs-qr10
   DTS := CS-QR10
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Planex CS-QR10
   DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci kmod-i2c-core kmod-i2c-ralink kmod-sound-core kmod-sound-mtk kmod-sdhci-mt7620
 endef
@@ -212,14 +204,12 @@ TARGET_DEVICES += cs-qr10
 
 define Device/db-wrt01
   DTS := DB-WRT01
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Planex DB-WRT01
 endef
 TARGET_DEVICES += db-wrt01
 
 define Device/mzk-750dhp
   DTS := MZK-750DHP
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Planex MZK-750DHP
   DEVICE_PACKAGES := kmod-mt76
 endef
@@ -227,14 +217,12 @@ TARGET_DEVICES += mzk-750dhp
 
 define Device/mzk-ex300np
   DTS := MZK-EX300NP
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Planex MZK-EX300NP
 endef
 TARGET_DEVICES += mzk-ex300np
 
 define Device/mzk-ex750np
   DTS := MZK-EX750NP
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Planex MZK-EX750NP
   DEVICE_PACKAGES := kmod-mt76
 endef
@@ -273,7 +261,6 @@ TARGET_DEVICES += oy-0001
 
 define Device/psg1208
   DTS := PSG1208
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Phicomm PSG1208
   DEVICE_PACKAGES := kmod-mt76
 endef
@@ -309,14 +296,12 @@ TARGET_DEVICES += mlwg2
 
 define Device/wmr-300
   DTS := WMR-300
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Buffalo WMR-300
 endef
 TARGET_DEVICES += wmr-300
 
 define Device/rt-n14u
   DTS := RT-N14U
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Asus RT-N14u
 endef
 TARGET_DEVICES += rt-n14u
@@ -362,7 +347,6 @@ TARGET_DEVICES += gl-mt750
 
 define Device/zte-q7
   DTS := ZTE-Q7
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := ZTE Q7
 endef
 TARGET_DEVICES += zte-q7
@@ -376,7 +360,6 @@ TARGET_DEVICES += youku-yk1
 
 define Device/zbt-ape522ii
   DTS := ZBT-APE522II
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Zbtlink ZBT-APE522II
   DEVICE_PACKAGES := kmod-mt76
 endef
@@ -384,7 +367,6 @@ TARGET_DEVICES += zbt-ape522ii
 
 define Device/zbt-wa05
   DTS := ZBT-WA05
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Zbtlink ZBT-WA05
 endef
 TARGET_DEVICES += zbt-wa05
@@ -399,14 +381,12 @@ TARGET_DEVICES += zbt-we826
 
 define Device/zbt-wr8305rt
   DTS := ZBT-WR8305RT
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Zbtlink ZBT-WR8305RT
 endef
 TARGET_DEVICES += zbt-wr8305rt
 
 define Device/tiny-ac
   DTS := TINY-AC
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Dovado Tiny AC
   DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci
 endef
diff --git a/target/linux/ramips/image/mt7628.mk b/target/linux/ramips/image/mt7628.mk
index 0647acf3ad..bd7d5bf7a4 100644
--- a/target/linux/ramips/image/mt7628.mk
+++ b/target/linux/ramips/image/mt7628.mk
@@ -28,7 +28,6 @@ TARGET_DEVICES += wrtnode2p
 
 define Device/duzun-dm06
   DTS := DUZUN-DM06
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := DuZun DM06
   DEVICE_PACKAGES := kmod-usb2 kmod-usb-ohci kmod-ledtrig-usbdev
 endef
@@ -36,7 +35,6 @@ TARGET_DEVICES += duzun-dm06
 
 define Device/mac1200r-v2
   DTS := MAC1200RV2
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Mercury MAC1200R v2.0
 endef
 TARGET_DEVICES += mac1200r-v2
diff --git a/target/linux/ramips/image/rt305x.mk b/target/linux/ramips/image/rt305x.mk
index 8525db191a..ede2728a32 100644
--- a/target/linux/ramips/image/rt305x.mk
+++ b/target/linux/ramips/image/rt305x.mk
@@ -115,7 +115,6 @@ TARGET_DEVICES += air3gii
 
 define Device/awm003-evb
   DTS := AWM003-EVB
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := AsiaRF AWM003 EVB
 endef
 TARGET_DEVICES += awm003-evb
@@ -131,7 +130,6 @@ TARGET_DEVICES += awmapn2403
 
 define Device/bc2
   DTS := BC2
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := NexAira BC2
 endef
 TARGET_DEVICES += bc2
@@ -139,7 +137,6 @@ TARGET_DEVICES += bc2
 
 define Device/carambola
   DTS := CARAMBOLA
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := 8devices Carambola
   DEVICE_PACKAGES :=
 endef
@@ -156,7 +153,6 @@ TARGET_DEVICES += d105
 
 define Device/dir-620-a1
   DTS := DIR-620-A1
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := D-Link DIR-620 A1
 endef
 TARGET_DEVICES += dir-620-a1
@@ -164,7 +160,6 @@ TARGET_DEVICES += dir-620-a1
 
 define Device/dir-620-d1
   DTS := DIR-620-D1
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := D-Link DIR-620 D1
 endef
 TARGET_DEVICES += dir-620-d1
@@ -180,7 +175,6 @@ TARGET_DEVICES += esr-9753
 
 define Device/hw550-3g
   DTS := HW550-3G
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Aztech HW550-3G
   DEVICE_PACKAGES := kmod-usb-core kmod-usb-dwc2 kmod-ledtrig-usbdev
 endef
@@ -189,7 +183,6 @@ TARGET_DEVICES += hw550-3g
 
 define Device/rt-n13u
   DTS := RT-N13U
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Asus RT-N13U
   DEVICE_PACKAGES := kmod-leds-gpio kmod-rt2800-pci wpad-mini kmod-usb-dwc2
 endef
@@ -198,7 +191,6 @@ TARGET_DEVICES += rt-n13u
 
 define Device/freestation5
   DTS := FREESTATION5
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := ARC Wireless FreeStation
   DEVICE_PACKAGES := kmod-usb-dwc2 kmod-rt2500-usb kmod-rt2800-usb kmod-rt2x00-usb
 endef
@@ -207,7 +199,6 @@ TARGET_DEVICES += freestation5
 
 define Device/ip2202
   DTS := IP2202
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Poray IP2202
 endef
 TARGET_DEVICES += ip2202
@@ -215,7 +206,6 @@ TARGET_DEVICES += ip2202
 
 define Device/ht-tm02
   DTS := HT-TM02
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := HooToo HT-TM02
   DEVICE_PACKAGES := kmod-usb-core kmod-usb-ohci kmod-usb2 kmod-ledtrig-usbdev
 endef
@@ -224,7 +214,6 @@ TARGET_DEVICES += ht-tm02
 
 define Device/mofi3500-3gn
   DTS := MOFI3500-3GN
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := MoFi Network MOFI3500-3GN
 endef
 TARGET_DEVICES += mofi3500-3gn
@@ -242,7 +231,6 @@ TARGET_DEVICES += 3g150b
 
 define Device/mr-102n
   DTS := MR-102N
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := AXIMCom MR-102N
 endef
 TARGET_DEVICES += mr-102n
@@ -260,7 +248,6 @@ TARGET_DEVICES += mpr-a1
 
 define Device/mpr-a2
   DTS := MPRA2
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   UIMAGE_NAME:= Linux Kernel Image
   DEVICE_TITLE := HAME MPR-A2
   DEVICE_PACKAGES := kmod-usb-core kmod-usb-ohci kmod-usb2 kmod-ledtrig-netdev
@@ -278,7 +265,6 @@ TARGET_DEVICES += dir-300-b7
 
 define Device/dir-320-b1
   DTS := DIR-320-B1
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := D-Link DIR-320 B1
 endef
 TARGET_DEVICES += dir-320-b1
@@ -294,7 +280,6 @@ TARGET_DEVICES += nbg-419n
 
 define Device/mzk-wdpr
   DTS := MZK-WDPR
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Planex MZK-WDPR
 endef
 TARGET_DEVICES += mzk-wdpr
@@ -302,7 +287,6 @@ TARGET_DEVICES += mzk-wdpr
 
 define Device/ncs601W
   DTS := NCS601W
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Wansview NCS601W
   DEVICE_PACKAGES := kmod-video-core kmod-video-uvc \
 		kmod-usb-core kmod-usb-ohci
@@ -312,7 +296,6 @@ TARGET_DEVICES += ncs601W
 
 define Device/m2m
   DTS := M2M
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   UIMAGE_NAME:= Linux Kernel Image
   DEVICE_TITLE := Intenso Memory 2 Move
   DEVICE_PACKAGES := kmod-ledtrig-netdev kmod-ledtrig-timer \
@@ -324,7 +307,6 @@ TARGET_DEVICES += m2m
 
 define Device/miniembplug
   DTS := MINIEMBPLUG
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Omnima MiniEMBPlug
 endef
 TARGET_DEVICES += miniembplug
@@ -332,7 +314,6 @@ TARGET_DEVICES += miniembplug
 
 define Device/miniembwifi
   DTS := MINIEMBWIFI
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Omnima MiniEMBWiFi
 endef
 TARGET_DEVICES += miniembwifi
@@ -348,7 +329,6 @@ TARGET_DEVICES += psr-680w
 
 define Device/pwh2004
   DTS := PWH2004
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Prolink PWH2004
   DEVICE_PACKAGES :=
 endef
@@ -357,7 +337,6 @@ TARGET_DEVICES += pwh2004
 
 define Device/rt5350f-olinuxino
   DTS := RT5350F-OLINUXINO
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := RT5350F-OLinuXino
   DEVICE_PACKAGES := kmod-usb-core kmod-usb-ohci kmod-usb2 \
 		kmod-i2c-core kmod-i2c-ralink \
@@ -368,7 +347,6 @@ TARGET_DEVICES += rt5350f-olinuxino
 
 define Device/rt5350f-olinuxino-evb
   DTS := RT5350F-OLINUXINO-EVB
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := RT5350F-OLinuXino-EVB
   DEVICE_PACKAGES := kmod-usb-core kmod-usb-ohci kmod-usb2 \
 		kmod-i2c-core kmod-i2c-ralink \
@@ -395,7 +373,6 @@ TARGET_DEVICES += rt-n10-plus
 
 define Device/rut5xx
   DTS := RUT5XX
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := Teltonika RUT5XX
 endef
 TARGET_DEVICES += rut5xx
@@ -410,7 +387,6 @@ TARGET_DEVICES += sl-r7205
 
 define Device/tew-714tru
   DTS := TEW-714TRU
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := TRENDnet TEW-714TRU
 endef
 TARGET_DEVICES += tew-714tru
@@ -425,7 +401,6 @@ TARGET_DEVICES += v22rw-2x2
 
 define Device/w502u
   DTS := W502U
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := ALFA Networks W502U
 endef
 TARGET_DEVICES += w502u
@@ -450,7 +425,6 @@ TARGET_DEVICES += mzk-dp150n
 
 define Device/wizard-8800
   DTS := WIZARD8800
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   UIMAGE_NAME:= Linux Kernel Image
   DEVICE_TITLE := EasyAcc WIZARD 8800
 endef
@@ -502,7 +476,6 @@ TARGET_DEVICES += ur-326n4g
 
 define Device/ur-336un
   DTS := UR-336UN
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := UPVEL UR-336UN
   DEVICE_PACKAGES := kmod-usb-core kmod-usb-dwc2 kmod-ledtrig-usbdev
 endef
@@ -511,7 +484,6 @@ TARGET_DEVICES += ur-336un
 
 define Device/wr6202
   DTS := WR6202
-  IMAGE_SIZE := $(ralink_default_fw_size_8M)
   DEVICE_TITLE := AWB WR6202
 endef
 TARGET_DEVICES += wr6202