how can i write eprom27c512

[large12390]

hello all member
need help how can i wrote into eprom 27c512 of vw 1.6 1aw
i can read its will but i cant write enymore
i tray with exltec and q4 all sem
resulte
eny sulation
regards

[Faraday]

This should help you http://www.ti.com/lit/ds/smls512g/smls512g.pdf

[turboracing]

it is otp chip one time program u need new one