I have an OSTC 2N and in the past I did update it several times with no problem.
I changed my laptop and downloaded the companion software, started the update untill gave error.
I can see that it is connected to port 5, yet the companion keeps telling me that there is not connection and no update is possible. The N2 has the screen locked with “Bootloader Please wait!”.
reading on the forum I
Forum: OSTC Mk.2, 2N and 2C