On 7520's with rev 4.0 (which is all I can test) the BBlight
program will light the handheld when initially plugged into
AC power but the light will turn off in the normal specified
time (For me 2 minutes). All other features such as "On
Activity" and "Unholstering" work fine. This may be by
design but I doubt it as the previous version would turn on
the handheld backlight indefinately. This is an important
feature of the BBLight tool as I use the Blackbery more for
Telenav turn by turn GPS navigation then almost anything
else if broken down by the total amount of hours used. This
is very anoying because to get the light back on i have to
move the wheel or press a button which removes me from
the pointer on the screen I want to park on for easier
access.