[ICOM] IC-FR4000 OPC-1211 flash cable

[D Jones]

Whoops, forgot:6 - Ground
 
 
  On Fri, Jun 30, 2023 at 9:31 PM, D Jones<djoneses at verizon.net> wrote:   Don't know if this will help, but here is the pinout for J12 on the logic unit:
1 - TX Data (from the CPU on the logic unit) normally pulled high2 - RX Data (to the CPU on the logic unit) normally pulled high3 - Sets Mode 2 in the CPU when high (Vss)4 - Reset (resets the CPU when low)5 - 5V from the logic unit 
 
  On Fri, Jun 30, 2023 at 7:54 PM, flameout at gmail.com<flameout at gmail.com> wrote:    My FR4000 repeater is running on Revision 1.2 (the programming software is
1.4) and I was able to get the Firmware to update it to v1.6 (EX2712A-6)
but now I see I need the OPC-1211 Flash Upgrade cable that plugs into the
Logic board (J-12) Does anyone have any idea where to find that cable or
even the pin-out where maybe I can make my own??
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