i have had the same problem on my oblivion
its just that the last firmware update fixed it so you cant do it anymore i recommend a
new ps3

i've heard it said before that the cheat dosent work on the ps3...on mine it does however.
You will 2 or more identical scrolls, double-click on you identical scrolls while in your
inventory (X) then (without leaving the items screen) drop the item you wish to dupe (can
be a weapon, ring whatever) the first try might be unsuccesful or if your enchanted weapon
isnt recharged it might not work also. But i found that the only items you cant dupe on
the ps3 are quest items (cant drop em)the KOTN armor and the imperial dragon armor and
varla stones (although you dont need them, dupe on item , hot key it when you unequip it
and re-equip it you'll notice its recharged by itself) the rest of the items i have been
able to dupe if it is true that newer versions of the ps3 has been "patched" that would in
fact surprise me....

I would like to thank deoraven for his help, the unregistered person who tried but the
thing is, how can they update my ps3 when they dont have access to my ps3 i have dial up
because my dad is a cheap bastered.

it puzzles me also how that could happen my best guess would either of two things .....i
bought the first version of the ps3 a year ago maybe yours is newer and they made some
mods.....or the game itself has been corrected i bought the game a year ago also and the
complaints about the dupe cheat not working is only recent ....so dude am sorry i know
that must **** the big one .....

the arrow cheat doesn't actually work but if you get duplicate scrools(scrools that are
exactly the same at least two) if you eguip them twice in a row by pressing the x button
and then go onto the item you wish to copy and drop it it should duplicate. Of course to
get it to work make sur you have more scrolls then the object you wish to copy other wise
it doesn't work because the cheat beasically makes the same number of objects as scrolls.
Hope it helped because it worked for me