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Can not use xmodem to upload file in minicom in Ubuntu

If you need upload file to target device from host PC, you can use minicom and select xmodem. here are the command.

Ctrl-a and press s

then choice which file you want to upload.

If you met the problemt that upload file by xmodem protocol in minicom in Ubuntu, you should install lrzsz first. basically, I don' know why minicom doest show any error message....

root@hrdhy:/media# apt-get install lrzsz