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Hi, I have a SST27sf512 but I can´t to copy my chip, I push "read from chip" and only appear "FFFFFFFFFFFFFFFFFFFFF"

I use the mini pro programmer

Did you check the second half of the data?

I dont know use the program, I only put de chip, select the 27sf512 in the program, and push "read from chip"

I do that 3 steps. are any more?

There's a scrollbar on the right side. Scroll down to the second half of the data and see if it's empty.

Just to confirm, check your SST chip, some time it fake chip write SST27SF512 Windbond. If yes you should try select W27C512. And like smooth1 said. check at x8000 line for second half data.

Or you can setup select range x00000000 to 0000FFFF to x00008000 to 0000FFFF