Software update from 6.4.2

[setfan]

I am stuck at a point where re-reading the setup guide continually just isn't helping me - I cant get into any configuration settings so need to know (a) whether I should bail out and start all over again from scratch (including a new Pi Imager download), or (b) whether there is an option to reset somehow using my current sd card with Moode already installed on it.