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66ak2h evm ubi error, nand flash还有救吗?



hello,

       使用66ak2h evm ,按照SDK中操作,使用program_evm脚本,无论时恢复出厂设置,还是烧录现有的nand.bin文件,

      启动os时,

       报 UBIFS error (pid:1): cann't open "ubi:rootfs", error -19

           Error reading superblock on volum 'ubi:rootfs‘ errno=-19!

     uboot命令行下 执行nand bad, 显示

     00000000

     1ff80000

     1ffa0000

     1ffc0000

     1ffe0000

      请问, nand flash还有救吗?需要怎样操作才能正常启动OS?

    谢谢!