this is the most relevant information provided so far, from which we can infer that you’re not actually connected to a network.

network connectivity is essential to get anything out of this system, so that should be addressed first. your options are:

  1. change your network so it doesn’t require a login, or use a different network
  2. use an ethernet cable to connect to your network

alternatively, you could go visit a more standard network, do the update, get a few scripts, and then connect to your computer via hotspot mode for manual file transfers.