[Freon]

I got the same thing as far as time needed for a software update from IDEOS to IJEOS. They had the car all day. Seems odd, but it may do a lot of careful checksuming of the data, and it is probably a complete overwrite of the flash ROM. I wonder if it overwrites the data several times to make sure it sticks. Flash ROM can be kinda funny on the physical layer, and since vehicle software, such as the drive-by-wire stuff, can be so critical to safety they may play it safe and do multiple overwrites. I imagine it is overkill. The programmer may also run a ton of diagnostics after the write is done.

For reference, when you install or fully uninstall a Cobb AP it takes something like 30-45 minutes. I don't think there is any real diagnostic--probably just a CRC or byte-by-byte read compare which should be fast.