Dude, the Matrix-Manager is only an ELF-File which get'S 'installed' (rather copyied) to the MC.
Your chip can load and execute ELFs from specific predifined paths on MC, that simple it is. You only have to copy/'install' the appropriate ELF into the correct directory + the ELF of course must have the correct filename...
In fact it should be possible to use any ELF you want, such as OPL or uLE.
Btw.: You shoud use the DEV.1-Mode of your chip.
It is the same as "MatrixManager", but simply loads an ELF from the standard-DEV.1-Path "mc0:/BOOT/BOOT.ELF".
PS2 V7/DMS3 V2 (FW:2.4b7); Seagate Baracuda 200GB
PS2 V7/CC1.0 (FW:34 hacked v2 BM:2.1.6); Maxtor DiamondMAX9 PLUS 160GB
PS2 SCPH-30004R; NoMod+NoLaser
3xSony MC 8MB
MAX/Datel 16MB with Boot-CD
Custom FMCB 1.8b+ Beta-Build, my AIO 0.5, Sony&xRhino-Linux