hi dear , you can update your firmware into 703 NO by USB only one step needed , you can find the right firmware from this link :
http://www.bee-link.com/forum.ph ... 6orderby%3Dlastpost
about how to update your firmware by USB , you can pay atrention to this link :
https://www.youtube.com/watch?v=m8chkgcfcwQ (USB cable)
i wish it could be helpful for you , thank you . :hug:
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