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DM368 烧写New Kernel 的问题



成功挂载NFS后该怎么烧写 ipnc_dm368_ubifs? 

 下面的是我的烧写过程中的问题

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root@IPNC_DM368:~# flash_eraseall /dev/mtd3

(省去中间一堆类似提示:

.

Skipping bad block at 0x026e0000

Skipping bad block at 0x02700000

.

root@IPNC_DM368:~# /var/www/update.cgi 

Segmentation fault

root@IPNC_DM368:~# /var/www/update.cgi  /dev/mtd3 /ipnc_dm368_ubifs

Segmentation fault

root@IPNC_DM368:~# /dev/mtd3 /ipnc_dm368_ubifs

-sh: /dev/mtd3: Permission denied

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求大神指点!