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GP688 firmware upgrade
Posted: Sat Feb 22, 2014 1:46 am
by Causilgey
I need to firmware upgrade a number of GP688 and my RLN4008 Rib and RKN4074B lead don't appear to work for this operation. Please can someone suggest a way to do this?
Thanks
Re: GP688 firmware upgrade
Posted: Sat Feb 22, 2014 7:22 am
by Causilgey
From what I can see, the only difference btween my lead and one used by a main dealer is that pin 3 is missing on the radio connector. Looking at your pin outs that should make no difference.
Re: GP688 firmware upgrade
Posted: Wed Feb 26, 2014 12:20 am
by Andreas
1.)Never use a RIBLESS cable to make a firmware update.
2.)Always save the tuning data and write down the temperature compensation data of each radio,before you make the update.
Andreas