Command nav update from v5 to 2017 failed
In my experience, and when my last update failed, I simply ejected the discs, inserted them again, and I got nothing... Sat there frustrated for a little while and eventually, it resumed the installation process (as if it took it a minute to search the disc for where it left off). Of course, this is assuming the discs are not corrupt.
Fortunately, if you bought it through Amazon, and assuming you are still within the return period, I'd contact seller immediately and request an exchange or a refund.
Unfortunately, if it never completed the installation it might mean that your COMAD system is down until you receive the proper disc.


