You can get that PSP here:
http://software-dl.ti.com/dsps/dsps_public_sw/psp/LinuxPSP/index.html
Here's a link to the previous SDK (6.00) as well:
http://software-dl.ti.com/sitara_linux/esd/AM335xSDK/06_00_00_00/index_FDS.html
I was having trouble finding earlier revisions! Hopefully this has you covered.
