diff -Nur u-boot-2015.01.orig/include/configs/udoo.h u-boot-2015.01/include/configs/udoo.h
--- u-boot-2015.01.orig/include/configs/udoo.h	2015-01-12 12:39:08.000000000 -0200
+++ u-boot-2015.01/include/configs/udoo.h	2016-02-24 00:50:18.771357005 -0300
@@ -98,9 +98,14 @@
 #define CONFIG_CMD_FAT
 #define CONFIG_DOS_PARTITION
 
-#define CONFIG_DEFAULT_FDT_FILE		"imx6q-udoo.dtb"
+/* Enable extlinux boot support */
+#define CONFIG_CMD_PXE
+#define CONFIG_MENU
+#define BOOT_TARGET_DEVICES(func)
+#include <config_distro_bootcmd.h>
 
 #define CONFIG_EXTRA_ENV_SETTINGS \
+	BOOTENV \
 	"script=boot.scr\0" \
 	"image=zImage\0" \
 	"console=ttymxc1\0" \
@@ -111,9 +116,11 @@
 	"fdt_addr=0x18000000\0" \
 	"boot_fdt=try\0" \
 	"ip_dyn=yes\0" \
+	"devtype=mmc\0" \
+	"devnum=0\0" \
 	"mmcdev=0\0" \
 	"mmcpart=1\0" \
-	"mmcroot=/dev/mmcblk0p2 rootwait rw\0" \
+	"mmcroot=/dev/mmcblk0p1 rw rootwait\0" \
 	"update_sd_firmware_filename=u-boot.imx\0" \
 	"update_sd_firmware=" \
 		"if test ${ip_dyn} = yes; then " \
@@ -178,6 +185,7 @@
 
 #define CONFIG_BOOTCOMMAND \
 	   "mmc dev ${mmcdev}; if mmc rescan; then " \
+		   "run scan_dev_for_boot;" \
 		   "if run loadbootscript; then " \
 			   "run bootscript; " \
 		   "else " \