cubietruck启动错误，mbr错误

HELLO! BOOT0 is starting!
boot0 version : 2.0.0?
read dram para.
dram driver version: 1.15
dram size =2048MB
0xffffffff
super_standby_flag = 0
Succeed in opening nand flash.
block from 2 to 6
deal block 2
Succeed in reading Boot1 file head.
The size of Boot1 is 0x00068000.
The file stored in 0x00000000 of block 2 is perfect. get="_blank"C" title="查看标签为 C 的文章" target="_blank">Check is correct.
Ready to disable icache.
Succeed in loading Boot1.
Jump to Boot1.
[       0.148] boot1 version : 2.0.0
[       0.148] script installed early ok
[       0.149] pmu type = 3
[       0.253] bat vol = 0 mv
[       0.267] axi:ahb:apb=4:2:2
[       0.267] set dcdc2=1450mv, clock=912M successed
[       0.269] key
[       0.282] no key found
[       0.282] flash init start
[       0.282] NB1 : enter NFB_Init
[       0.285] NB1 : enter phy init
[       0.288] [NAND] nand driver(b) version: 0x0x00000002, 0x0x00000012, data: 0x20130627
[       0.296] get the good blk ratio from hwscan : 912
[       0.301] NB1 : nand phy init ok
[       0.346] NB1 : init ok
[       0.346] flash init finish
[       0.346] get="_blank"mbr magic  is not correct
[       0.349] fs init fail
[       0.352] fs init fail, jump to fel