diff --git a/.build/images/dietpi-build b/.build/images/dietpi-build
index 2464c916d4..d70376fb2a 100755
--- a/.build/images/dietpi-build
+++ b/.build/images/dietpi-build
@@ -122,6 +122,7 @@ case $HW_MODEL in
 	70) iname='SparkySBC' HW_ARCH=2 partition_start=8 boot_size=48 root_size=712 boot_fstype='fat16';;
 	'72.1') iname='ROCKPi4' HW_ARCH=3 partition_start=16 root_size=1008;;
 	'72.2') iname='ROCK4SE' HW_ARCH=3 partition_start=16 root_size=1008;;
+	'72.3') iname='ROCK4CPlus' HW_ARCH=3 partition_start=16 root_size=1008;;
 	73) iname='ROCKPiS' HW_ARCH=3 partition_start=16 root_size=1008;;
 	74) iname='RadxaZero' HW_ARCH=3 partition_start=4 root_size=1020;;
 	75) iname='Container' HW_ARCH=${HW_ARCH:-10} root_size=575;;
diff --git a/.build/images/dietpi-installer b/.build/images/dietpi-installer
index 018f0bdfda..6c37f6365b 100755
--- a/.build/images/dietpi-installer
+++ b/.build/images/dietpi-installer
@@ -412,6 +412,7 @@ _EOF_
 						'79.3' ': NanoPC T6'
 						'72.1' ': ROCK 4 (all other variants)'
 						'72.2' ': ROCK 4 SE'
+						'72.3' ': ROCK 4C Plus'
 						'73' ': ROCK Pi S'
 						'74' ': Radxa Zero'
 						'77' ': ROCK 3A'
@@ -1041,7 +1042,7 @@ _EOF_
 			# Update APT lists
 			G_AGUP
 			# Install kernel, device tree, U-Boot, firmware and initramfs packages
-			local model='odroidn2' kernel='meson64' arch='arm64' branch='current' zstd=()
+			local model='odroidn2' kernel='meson64' arch='arm64' branch='current' zstd=() dietpi_uboot=0 dietpi_kernel=0
 			case $G_HW_MODEL in
 				10) model='odroidc1' kernel='meson' arch='arm';;
 				11) model='odroidxu4' kernel='odroidxu4' arch='arm';;
@@ -1086,6 +1087,7 @@ _EOF_
 				72) kernel='rockchip64'
 					case $HW_VARIANT in
 						2) model='rock-4se';;
+						3) model='rockpi-4cplus';;
 						*) model='rockpi-4b';;
 					esac;;
 				73) model='rockpi-s' kernel='rockchip64';;
@@ -1136,22 +1138,23 @@ _EOF_
 			fi
 			# Install initramfs-tools first to have an initramfs generated on kernel install, and configure it to use zstd if supported for better compression and faster decompression
 			[[ $kernel == 'rockchip64' || $kernel == 'rk35xx' || $kernel == 'meson64' || $kernel == 'sunxi64' || $kernel == 'sunxi' || $kernel == 'rockchip' ]] && zstd=('zstd')
-			# - Download and pre-install a more recent armbian-firmware package from our server
-			#G_EXEC_OUTPUT=1 G_EXEC curl -fo package.deb 'https://dietpi.com/downloads/binaries/armbian-firmware.deb'
-			#G_EXEC_OUTPUT=1 G_EXEC dpkg -i package.deb
-			#G_EXEC rm package.deb
 			G_AGI initramfs-tools u-boot-tools armbian-firmware "${zstd[@]}"
 			[[ ${zstd[0]} ]] && G_CONFIG_INJECT 'COMPRESS=' 'COMPRESS=zstd' /etc/initramfs-tools/initramfs.conf
-			# Download and pre-install kernel hosted on dietpi.com where the Armbian APT repo provides a too old version
-			if (( $G_HW_MODEL == 83 ))
+			# Download and pre-install kernel hosted on dietpi.com where the Armbian APT repo provides a too old version or is not available
+			if (( $dietpi_kernel ))
 			then
 				G_EXEC_OUTPUT=1 G_EXEC curl -fo package1.deb "https://dietpi.com/downloads/binaries/linux-image-$branch-$kernel.deb"
 				G_EXEC_OUTPUT=1 G_EXEC curl -fo package2.deb "https://dietpi.com/downloads/binaries/linux-dtb-$branch-$kernel.deb"
 				G_EXEC_OUTPUT=1 G_EXEC curl -fo package3.deb 'https://dietpi.com/downloads/binaries/armbian-firmware.deb'
-				local uboot=()
-				#(( $G_HW_MODEL == 83 )) && (( $HW_VARIANT == 1 )) && { G_EXEC_OUTPUT=1 G_EXEC curl -fo package4.deb "https://dietpi.com/downloads/binaries/linux-u-boot-$model-$branch.deb"; uboot=('package4.deb'); }
-				G_EXEC_OUTPUT=1 G_EXEC dpkg -i package1.deb package2.deb package3.deb "${uboot[@]}"
-				G_EXEC rm package1.deb package2.deb package3.deb "${uboot[@]}"
+				G_EXEC_OUTPUT=1 G_EXEC dpkg -i package[1-3].deb
+				G_EXEC rm package[1-3].deb
+			fi
+			# Download and pre-install U-Boot hosted on dietpi.com where the Armbian APT repo provides a too old version or is not available
+			if (( $dietpi_uboot ))
+			then
+				G_EXEC_OUTPUT=1 G_EXEC curl -fo package.deb "https://dietpi.com/downloads/binaries/linux-u-boot-$model-$branch.deb"
+				G_EXEC_OUTPUT=1 G_EXEC dpkg -i package.deb
+				G_EXEC rm package.deb
 			fi
 			# Orange Pi Zero 3 1.5G RAM variant: Install original Orange Pi bootloader
 			if (( $G_HW_MODEL == 83 )) && (( $HW_VARIANT == 2 ))