I brought some messiah 2 put a couple in v7 pals worked fine
tried two in a a v4 did not want to know, was just like they was not there. so swaped them for a magic and booted fine
On the back there was sticker but that has been removed on all of them and has got the track cut in the far corner.
on the chip it says,
And on the board
supplier says know way could you have 2 dud chips out of 10 chips
many thanks for any info