I remember when I got a Kobo Glo ereader a decade ago, I was soo excited to have an ereader that wasn't tied to Amazon.
So I booted it up, and it immediately wanted me to not only register, but to download a program on my computer, and do it from there.
I refused and got pissed.
I started googling and found a guide to hack it.
You had to manually modify the Sqlite database and create a user there.
After doing that, it just worked.
The feeling of relief and accomplishment was fantastic!