File list (Check if you may need any files):
USB_BOOT_LOADER_KEIL
....................\STARTUP.A51
....................\usb_boot_loader.Opt
....................\usb_boot_loader.plg
....................\usb_boot_loader.Uv2
....................\usb_boot_loader_Opt.Bak
....................\usb_boot_loader_Uv2.Bak
....................\SourceFiles
....................\...........\Global.h
....................\...........\main.c
....................\...........\USB
....................\...........\...\usb.h
....................\...........\...\usb_descriptor.c
....................\...........\...\usb_descriptor.h
....................\...........\...\usb_isr.c
....................\...........\...\usb_register.h
....................\...........\...\usb_request.c
....................\...........\...\usb_request.h
....................\debug
....................\.....\ExtDll.iex
....................\.....\main.lst
....................\.....\main.obj
....................\.....\STARTUP.lst
....................\.....\STARTUP.obj
....................\.....\usb_boot_loader
....................\.....\usb_boot_loader.hex
....................\.....\usb_boot_loader.lnp
....................\.....\usb_boot_loader.m51
....................\.....\usb_boot_loader.plg
....................\.....\usb_descriptor.lst
....................\.....\usb_descriptor.obj
....................\.....\usb_isr.lst
....................\.....\usb_isr.obj
....................\.....\usb_request.lst
....................\.....\usb_request.obj
TEST_BOOT_LOADER
................\STARTUP.A51
................\TEST_usb_boot_loader.Opt
................\TEST_usb_boot_loader.plg
................\TEST_usb_boot_loader.Uv2
................\TEST_usb_boot_loader_Opt.Bak
................\TEST_usb_boot_loader_Uv2.Bak
................\TEST_Uv2.Bak
................\SourceFiles
................\...........\JIAMI.C
................\...........\main.c
................\...........\STARTUP.A51
................\...........\USB
................\...........\...\usb.h
................\...........\...\usb_descriptor.c
................\...........\...\usb_descriptor.h
................\...........\...\usb_isr.c
................\...........\...\usb_register.h
................\...........\...\usb_request.c
................\...........\...\usb_request.h
................\debug
................\.....\ExtDll.iex
................\.....\hex2bin.exe
................\.....\JIAMI.lst
................\.....\JIAMI.obj
................\.....\main.lst
................\.....\main.obj
................\.....\STARTUP.lst
................\.....\STARTUP.obj
................\.....\TEST
................\.....\TEST.BIN
................\.....\TEST.hex
................\.....\TEST.lnp
................\.....\TEST.m51
................\.....\TEST.ORC
................\.....\TEST.plg
................\.....\usb_boot_loader
................\.....\usb_boot_loader.hex
................\.....\usb_boot_loader.lnp
................\.....\usb_boot_loader.m51
................\.....\usb_boot_loader.plg
................\.....\usb_descriptor.lst
................\.....\usb_descriptor.obj
................\.....\usb_isr.lst
................\.....\usb_isr.obj
................\.....\usb_request.lst
................\.....\usb_request.obj