RDK X3下载V1.1.7镜像无法启动，但是下载最新的V3.0.3版本镜像能正常启动，尝试了很多次，也试过升级不同的miniboot ，用的闪迪32G内存卡，这是因为什么原因，求指导，谢谢
xj3_iar_probe: IAR output mode not define,using HDMI output as default
LT8618: read edid failed: no ack
LT8618: Get EDID data failed!
EDID: invalid EDID data
EDID: unsupported version 0.0
No valid screens found,using default mode: 1080P@60Hz
In: serial
Out: vidconsole
Err: vidconsole
Net: x3pi reset eth phy done
Warning: ethernet@A5014000 (eth0) using random MAC address - 76:a3:c9:ec:6f:fb
eth0: ethernet@A5014000
Disable cnn cores ..
dtb_name:hobot-x3-pi_v2_1.dtb
base board type: X3 SDB(for ddr dqmap)
bootmode: NAND
board_id = 31540334
hb_boot_args_cmd_set custom_bootargs 0 ubuntu_boot 1
Hit key to stop autoboot in 1s
enable watchdog success !
eMMC or SD Card not detected on mmchost 0
eMMC or SD Card not detected on mmchost 1
switch to partitions #0, OK
mmc2 is current device
eMMC or SD Card detected on mmchost 2
Scanning mmc 2:1…
Found U-Boot script /boot/boot.scr
674 bytes read in 1 ms (658.2 KiB/s)
Executing script at 03c10000
Boot script loaded from devtype:mmc devnum:2 devplist:1
bootargs = console=ttyS0,921600 raid=noautodetect hobotboot.reson=WTD_RESET rootfstype=ext4 rw rootwait ubi.mtd=2,2048 mtdparts=hr_nand.0:6291456@0x0(miniboot),2097152@0x600000(env) root=/dev/mmcblk2p1
Loading fdt file: /boot/hobot/hobot-x3-pi_v2_1.dtb
** File not found /boot/hobot/hobot-x3-pi_v2_1.dtb **
Loading kernel: /boot/vmlinuz-4.14.87
19163144 bytes read in 842 ms (21.7 MiB/s)
ERROR: Did not find a cmdline Flattened Device Tree
Could not find a valid device tree
SCRIPT(/boot/boot.scr) FAILED: continuing…
Boot from eMMC or SD Card failed
Hobot>