!!Note: 
You should know the difference of the following two filenames. 
Caution: Please avoid using wrong firmware file to update IR-712A:

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[1] "ir712a_v#_##.fw":
    The firmware file "ir712a_v#_##.fw" is for IR-712A without "RevB" mark.
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[2] "ir712a_RevB_v#_##.fw":
    The RevB firmware file is for RevB version of IR-712A with front case labeled "RevB").
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!! For more detailed information regarding firmware update, please refer to user's manual.