[xiaomi] Fix install TAR-image

Makefile

@@ -5,8 +5,8 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=facinstall
-PKG_VERSION:=1.2
-PKG_RELEASE:=20231212
+PKG_VERSION:=1.3
+PKG_RELEASE:=20240104
 
 PKG_MAINTAINER:=remittor <[email protected]>
 PKG_LICENSE:=MIT

files/functions.sh

@@ -345,7 +345,7 @@ fi_check_tar() {
 	if [ -z "$tar_file" ]; then
 		tar_file=$FI_IMAGE
 	fi
-	magic=$( fi_get_hexdump_at 0 4 "$tar_file" )
+	magic=$( fi_get_hexdump_at 0 8 "$tar_file" )
 	if [ "$magic" != $FI_MAGIC_SYSUPG ]; then
 		fierr "incorrect TAR-image!"
 		return 1

files/xiaomi.sh

@@ -490,6 +490,15 @@ fi_platform_check_image() {
 		return 0
 	fi
 
+	if [ "$FI_IMAGE_MAGIC" = "$FI_MAGIC_SYSUPG" ]; then
+		fi_check_tar $FI_IMAGE || return 1
+		if [ "$FI_HOOK_TARSYSUPG" = "true" ]; then
+			FI_LOGMODE=2
+			filog "Detect sysupgrade TAR-image"
+			return 0
+		fi
+	fi
+
 	fierr "Incorrect image header"
 	return 1
 }