[on psp] what are this files for

[ZeroX4]

in directory

E:\PSP\GAME
i have this 3 folders wiith this files
PROUPDATE
UPATE
sdk

(i moved them to c:\E folder just to make dir print)

Code:

Nazwa    Full File Path
PROUPDATE    C:\E\PROUPDATE\
sdk    C:\E\sdk\
UPDATE    C:\E\UPDATE\
include    C:\E\sdk\include\
kuBridgeTest    C:\E\sdk\kuBridgeTest\
lib    C:\E\sdk\lib\
EBOOT.PBP    C:\E\PROUPDATE\EBOOT.PBP
EBOOT.PBP    C:\E\UPDATE\EBOOT.PBP
kubridge.h    C:\E\sdk\include\kubridge.h
libpspkubridge.a    C:\E\sdk\lib\libpspkubridge.a
libpspsystemctrl_kernel.a    C:\E\sdk\lib\libpspsystemctrl_kernel.a
libpspsystemctrl_user.a    C:\E\sdk\lib\libpspsystemctrl_user.a
main.c    C:\E\sdk\kuBridgeTest\main.c
main.c.orig    C:\E\sdk\kuBridgeTest\main.c.orig
Makefile    C:\E\sdk\kuBridgeTest\Makefile
pspvshbridge.h    C:\E\sdk\include\pspvshbridge.h
systemctrl.h    C:\E\sdk\include\systemctrl.h
systemctrl_se.h    C:\E\sdk\include\systemctrl_se.h

well in fact i dont care what they are for i just care if i need them ? i dont realy play any psp games on psp i just use it to emulate nes snes gameboys and sega systems

so do i need them ? cause for now everything works just fine without them