I am trying to update may Lionel Base and Cab-2
My base has the version 1.2
I used the serial port method and no luck
It shows the base is connected but reads an error message (No response from base)- Again, you got this error message not because your serial cable connection was not working- you got it because your base is on too early of a firmware revision to be able to write modules. You have to be on version 1.3 or higher base firmware for that procedure to work.
So I figured I would get a LCS wifi module.- Wouldn't solve the problem either, because it would still want a higher firmware revision bare minimum on the base to even connect- let alone write a module for higher updates or updating the CAB2 remote.
Of course no luck finding a LCS 6-81499 Cable.
Again, you need to take your memory module to someone with a base on a higher firmware revision and let them write you an upgrade module or loan you a set of memory modules already with a higher version update.
You can upgrade with a memory module from 1.2 all the way to the latest, it's not that problem, it's just again, 1.2 base version is so old, it was before they made the option to write further update modules. You just need a jump start to get past this step.
EDIT:
Further, you are asking for a cable to connect the WIFI module, but again, even that cable would not solve your immediate problem. The WIFI module cannot directly update base firmware- that's not how they made the system, it just provides that serial connection to the base. So again, unless your base was at least 1.3, and even then I think the WIFI module wants a minimum base firmware version that may be even higher, you'd still need a pre-written memory module from someone with higher base firmware to get you over this hurdle.