There are maybe some ways out, but definitely not easy and unlikely to be convenient in terms of time spent.
Check these:
viewtopic.php?t=167360#p821518
viewtopic.php?t=189094
I believe that the hold "more than five minutes" won't work anymore, but maybe It Is still worth an attempt.
Otherwise in theory you can open the device, connect in parallel to the reset button a relay and then "brute-force" the timing, since the allowed interval is very "wide", minimum 10 seconds and there are not that many such intervals in the max 10 minutes, it is doable, BUT in practice you have to take into account the various known (and unknown) quirks of Netinstall so it is not easy to calculate the time it may be needed.
As a first approximation 6x10=60 attempts, each one taking between 0 and 10 minutes, so on average 5 minutes, that makes 300 minutes, that one should double or triple to take into account possible mistakes/errors.
To this you add the time to prepare the relay, the connection, writing some script to control the relay and it won't simply be worth it.
If you attempt such an approach for the fun (or the glory) , then it is fine, of course.