I have one and even though it says it will burn 29F040 chips, mine will not. The folks at USTR (epromer maker's) arent too good at replying to emails either. They initially said it was a software glitch, then they blamed my chip as being faulty. Now I have two new chips and neither of those work either. I get an error stating "device not supported" or something like that.
It will however read a 29F040 and blank check it too. It has no probs with 27C256's either.If anyone has one of these please let me know if yours works. Thanks