@2018 Denali -- hey, I have not done a USB firmware update on the Carlinkitv2 (USB-C) before. I don't see any lights on that adapter when trying to do the update, using the one USB thumb-drive/stick that previously worked on the CPlay2Air adapter. Can you please describe what lights you see on your Carlinkitv2 adapter when you do a USB update (if any). I am putting the firmware into the root, of a freshly partitioned and formatted (full format, not quick, FAT32/Default), then sticking it into the adapter, plugging the adapter into a 3a power brick and then plugging the whole thing into a power outlet in my house.
Am I missing something here?
What brand of thumb-drive are you using?
Can anyone confirm/deny that there is any LED light activity on a Carlinkit v2 USB-C adapter during the USB manual update process?