User flofrucht of the qj forums has signed the latest Nintendo 64 Revision 677. This is newer than that last official beta 3 update and since its signed too, and will work on any PSP and Firmware.
Changelog:
[=>] Merged from Dev branch:
Rev 155 – Bdacanay
[+] Updated all of the compat codes
Rev 156 – Bdacanay
[-] Removed all of the dead forced options
Rev 157 – Corn
[!] optimized build config for best overall speed in B3
Rev 158 – Salvy
[~] Fixed regression in osTaskLoad if sync was enabled
[!] Removed -fno-builtin
Rev 159 – Salvy
[!] Reverted changes to bcopy (we need to profile them)
[!] Bumped oshle version
DOWNLOAD
DaedalusX64 SVN R677 Signed (6.02 MB)
Source: pspslimhacks