Where can I get the old HP printer software?

Apple does not seem to host any of it's old HP Printer Software, as any links to older versions seem to either now link to HP Printer Software v2.14 or doesn't exist anymore.

I have HP 4100 series printers that are giving me a Service Erorr of 49.4C02 when I print various PDF docs to them. Originally, I thought this was the printer, jetdirect card, or a firmware issue. Then after updating the HP Printer Software on another machine, it is now doing the same thing.

I now have 4 different Macs and have tested this on 4 different HP 4100 series printers. The issue is with the HP Printer Software Update pushed through Apple, and I cannot find their old packages to try and revert. These machines don't have a Time Machine Backup to go to, so reverting to that is out of the question. I just would like to completely delete the "Library/Printers/HP" and start over, but would like an older version that I know was working before.

I would like to try version 2.10, 2.11, or even 2.12, as I don't know if it broke at 2.13 or 2.14.

I thought it was a specific printer, but then swapped jetdirect cards, and the same print job from the same machine broke a different printer of similar make. I thought it was a specific computer, but then I ran software update on others, and they are now sending out jobs that break the printer.

The HP Printer Software Update v2.14 is definitely breaking the Laserjet 4100 series printers when printing over the network to Jetdirect cards. Insanely frustrating, since it requires restarting the printer and manually cancelling the job before it crashes the printer again.