TinyUmbrella only shows up until 4.3.2 but that's expected because I stopped saving them in TinyUmbrella since Cydia saves them automatically. What makes you think that Cydia doesn't have them anyway? I have to assume that they're saved since that's how it works in Cydia. Why wouldn't they be saved there?
Cydia only request and saves a few at a time so Apple doesn't blacklist them. Thus, there is a chance some didn't get saved before Apple stop signing it and moving to the next firmware. And, that's way it's always best to run Tinyumbrella and save them yourself. If you run Tinyumbrella, request the blobs from Cydia and they don't show up, it means Cydia doesn't have them.