LCX MT need 3.6 software update

[mapman76]

I am looking to help a friend and he has an old LCX 15 MT with an old softwrare version 2.9.Lowrance took all the updates for their older units off line.They now have update 3.7 but that won't work to update his unit. We need version 3.6 to update his older unit.It seems the older units you have to update in steps.
Any help would be greatly appreciated.

mapman

[153BIGFISH]

Saw your post and searched out the update which was finally emailed to me by Lowrance.
First call did not go well, but on the second call I got Craig. He seemed to live and breath this stuff.
Anyway, instructions for posting files would be helpful if there is a way to post them here.
Otherwise, I would be glad to email them on to anyone who would benefit.
I am in search of the original 5 pin networking cables (blue ones 5 pins in a star pattern).
Just need one end with male pins and I will be able to wire up all the devices I received in a box.
Planning to link the 2000 gps antenna to the 3500c and share data to LCx-15mt.
First Post as new member... liking what I see and read!!