DCS-8000LH/RE?(OR DCS-8000LHA1)

[laueno2]

I got couple DCS-8000LH/RE on sale (looks like refurbish model DCS-8000LHA1)
When I try the original method, I am not able to get HTTP access. I check the firmware and looks like its using 2.03.02 firmware
When I am trying to access to serial cable method, I did not see anything show up on console.
I tried over all the serial port parameters, none of them seem to get prompt console access.

Does anyone have any idea how do I access it via serial cable for this model to downgrade the firmware?

[laueno2]

After take it apart and check, I finally sort it out - looks like the serial pin on this specified type refurbish model are damage. I am able to connect to after take apart the case. In case someone had similar issue, try take it a part first.