Coder bpterson has released a password control plugin for HEN/CFW 6.20 TN-E, 6.20 PRO-B7. This plugin will enable a password protection before entering the PSP's XMB.
The usage is really simple:
Put passctrl.prx at ms0:/seplugins/ or ef0:/seplugins/
And add plugin path at vsh.txt.
UL: http://ul.to/9sg3cjv8
MU: http://www.megaupload.com/?d=CPY0FJLM
Source