PS1 GameShark codes too short!

[pool7]

EDIT: Solution in the 3rd post.

I recently got my hands on a Net Yaroze boot disc and Access card and it works just fine in my regular PS1; however I decided I'd give it a go to the GameShark codes I found that supposedly bypass the Access Card check.

These are the codes:
8006FF90 0000
8006FF92 0000
8006FF88 0000
8006FF8A 0000

Unfortunately I reached a dead end... I tried with a GameShark 2.42, GameShark Pro 3.0 and X-Plorer 4.52, but had the same issue with all of them: the codes I enter are 1 digit short.
Example:
My code:
8006FF90 0000
What I must enter:
####### ####
As you can see, I'm being asked for 1 more digit/character in the first string. I tried everything (adding a 0 at the beginning, adding a 0 at the end) to no avail.
In the X-plorer it seemed like I could "remove" digits/character in order to enter a shorter string, but when save it didn't work.

I remember using these codes with my GameShark 2.42 back in the days (ie. 10 years ago?) and it worked.

What am I missing?
I went through the manuals and looked online but found absolutely nothing...

Thanks in advance.

[pool7]

Well, I feel embarrassed now...
I was missing one of the F in the codes... however... it seems like the codes do not work :S

I triple checked them now and it is not bypassing the Access Card check...

[pool7]

Ignore and / or delete this thread please!

Apparently it takes some 20 to 30 seconds for the code to show its effects once the main Yaroze screen is loaded... and I wasn't being patient enough...

So basically:
The codes I posted in my OP are ok, and it takes some time for them to take effect: it'll first show "Access Card... Not Found" then after some 30 seconds it'll change to "Access Card... OK".

[Lazy Bastard]

Actually, this thread should be kept, in case other people run into the same issue. That's one of the main benefits of a forum.