i was trying to install Ultimate Recovery 6.20 TN-D Permanent & CFW 6.35 PRO-B3.
so i change the usbdevice to Flash 0.
connected my usb to the computer and opened the folder named VSH.

when i opened that folder there was only 2 folders "ETC" and 'RESOURCE' there was no 'module' folder.

then when i am trying to create a folder name 'module' my computer always pop this up:
'this destination has already contains a folder name 'module', but i don't see any folder named module....

please reply if you know how to solve the problem....

ADD. Info
my PC is windows 7
my psp is 2000 running 6.35 PRO