Re: [Discuss-gnuradio] problem with u2_flash tool and new SD card!

[Matt Ettus]

周亮 wrote:
> Recently we received the new USRP2 of REV4. Then I tried to flash 
> firmware to 2GB SD card with u2_flash_tool but failed. The error message is:
>
>  sudo ./u2_flash_tool -t fpga  --dev=/dev/sdj -w u2_rev3_2rx_iad.bin
> Traceback (most recent call last):
>   File "./u2_flash_tool", line 111, in <module>
>     main()
>   File "./u2_flash_tool", line 97, in main
>     r = (write_flash(offset, filename, options.dev)
>   File "./u2_flash_tool", line 26, in write_flash
>     dev.flush()
> IOError: [Errno 5] Input/output error
>
> It works perfectly on old 1GB SD card. What is the problem?


Have you made sure that the write protect is not set?

Matt