change specified byte in a hex file

s m sam.gh1986 at
Mon Jun 3 06:28:47 UTC 2013

hi folks,

i want to change a specified byte in a hex file. i want to edit my file and
change byte 0x28a content from 0x08 to 0x14.

i try to do it with hex-editor in windows but this file is too big and i
can't transfer it to the other system. i think it should be done by some
commands such as "dd" but i don't know how to use it.

please help me to edit my file.
thanks in advance,

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