msa1200刷机不能进系统

6664***

msa1200msa1k-2113naAP刷4.1.5.img自动进rredboot，不能进系统是那的事啊，小白不懂，望大神指教。
   
RedBoot> update -f
Primary: yes
Image_version: 4.1.5
Kernel_version: 11.02.17
Rootfs_version: 11.02.17
Branch: MSM
Creator: build@buildserver
Timestamp: 2011/02/17 17:25
Type: Official Release
Kernel offset: 308
Kernel length: 10797500
Rootfs offset: 0
Rootfs length: 0
fis create -b 0x80500134 -l 0x00c00000 -s 0x00a4c1bc -f 0xbf080000 -e 0x802fb000 -r 0x80060000 "kernel"
... Erase from 0xbf080000-0xbfc80000: ................................................................................................................................................................................................
... Program from 0x80500134-0x80f4c2f0 at 0xbf080000: .....................................................................................................................................................................
... Erase from 0xbf070000-0xbf080000: .
... Program from 0x87ff0000-0x88000000 at 0xbf070000: .
... Erase from 0xbf060000-0xbf070000: .
... Program from 0x87fe3000-0x87fe4000 at 0xbf060000: .
Update images completed.
RedBoot> reset
... Resetting.+Ethernet eth0: MAC address 00:17:7b:33:5b:6b
IP: 0.0.0.0/255.255.255.0, Gateway: 0.0.0.0
Default server: 0.0.0.0

Bootstrap and debug environment [ROMRAM]
Based on RedBoot release2.02, version "1.0.0" - built 10:44:37, Oct 18 2010

Firmware: Partition A - 4.1.5 Official Release
          Partition B - none.
RAM: 0x80000000-0x88000000, [0x80054100-0x87fe1000] available
FLASH: 0xbf000000 - 0xbfff0000, 256 blocks of 0x00010000 bytes each.
== Executing boot script in 1.000 seconds - enter ^C to abort
RedBoot>

p278***

现在都是4.72版了,我也想要素.72的编程固件,你怎样刷的,我的是刷不进去,认证不成功