DSQ8 chips wont reset

[Haaland]

Hi, am building my own chip reseter and having some trouble overwriting the data in the second page (page1) of DSQ8 chips.
the copy protect bytes on 80h to 84h is set to 0, still i cant rewrite the data on page 1, page 0, 2 and 3 are no problem.
I can however rewrite the data with only 0, but then its locked on 0, i want a bunch of F's.
Is this a problem on other reseting devices or is it just mine?

My first guess was protection control byte, but the only thing set to 55 is 8Ch, which is reserved byte according to the datasheet, it also reads 55 on brand new IU.

Anyone having a clue?

[Haaland]

I am by the way also receiving AAh from the chip after the copy-scratchpad command is done, which means the writing was a success, otherwise i would receive FF