(He and the archivists finish going through and translating every computer-science encyclopedia article that looked like it might be relevant to the task of building a compatible mesh node, and they conclude that they don't have enough detailed information to pull it off. Otherworlders aren't supposed to be able to bring physical objects with them, "the possibility of needing to network a random isolated joey with alien computers" wasn't in his society's threat model, and they made no particular attempt to optimise for it.
Which means they're stuck converting all of his files through the analog layer, and that means a disturbingly high chance that the joey will break before he's done.
He experiments more with optimising his upload bandwidth. He finds, buried in the settings of his music-player software, an option to increase speed by up to 3x: he's not sure why that option is even there--maybe a nightcore fan submitted a pull request?--but it means he can get through an hour's a circuit's worth of audio in 12 loops and just slow the recording back down again afterward (he tests this, and it comes out fine). He puts his font size as small as it will go, and he tries taking videos of himself flipping through pages of an ebook so he doesn't have to stop to take photos: it takes a lot more Thomassia-compatible storage space, but that's not what's at a premium here, and if desired they can extract individual frames from the video later.
He might make it. The encyclopedia is very large in the way that encyclopedias get when they are unbound by the need to fit on a bookcase, and he has so many ebooks and a not-insubstantial amount of Mesh cache, but he might make it.
(And it's not as if it would be better if he had fewer ebooks, he points out to himself.))