Without standing behind your shoulders and seeing what you're doing and what the device is doing, a simple "it doesn't work" is pretty much useless, as far as pinpointing what's going wrong goes.
You'll have to give much more details on what exactly *you* did (instead of what you think you did, which is what just posting a third-party link suggests), and how the device reacted, step by step.
Sidebar 1: After a factory reset, the *original* FW version is restored. It's generally not a good idea to stay on a deprecated FW version, unless you have *very* good reasons to.
In the specific case of the Mini, there's an added quirk in that older FW versions are actually no longer supported by Kobo, and may behave erratically, preventing (among other things) automatic updates.
You should have received a mail from Kobo about that. Otherwise, there's a couple of threads about it in the main Kobo forum.
TL;DR: Start by updating to the latest FW available for your device, it'll make everything else easier to follow
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Sidebar 2: Constructive criticism on
documentation is always helpful, so, I'd be happy to know what went wrong with that, so that you had to resort to third-party documentation?
I won't start a rant again about third-party documentation, because I usually reserve that to Kindle-land, where it's much more harmful, because of the peculiarities of the ecosystem
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