Need help finding 1.50 and 3.40 sony updaters

Hi there,
I just succesfully downgraded my psp to 1.5 using the Noobz' lumines downgrader, so I'm all set to upgrade some custom firmware.
I downloaded 3.40 OE-A (from this site) and have read the Readme. In there it says 'Get the 1.50 and 3.40 Sony updaters', however I am having trouble finding somewhere to download them.

I'm going to feel pretty silly if it turns out they are available on this site as well, but I have looked and looked!

Thanks!

welcome, and there always in the download section

1.50: http://www.pspbrew.com/?page=fileInfo&cid=5296&d=900
3.40: http://www.pspbrew.com/?page=fileInfo&cid=5296&d=4733

Make sure u read the readme's and if got more questions just ask.

Great.
Thanks Akira.