When did the "write VIN" feature disappear ?

I have to do an ECM swap...and of course, this feature is now gone. :confused:
What was the last version with the 'write VIN' feature ?

write vin/vats/tunerlock is still there for Gen3 stuff at least, used it last night on the most current version. if you're doing gen4/5 I haven't looked for it.

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Originally Posted by charcoal03silvy

write vin/vats/tunerlock is still there for Gen3 stuff at least, used it last night on the most current version. if you're doing gen4/5 I haven't looked for it.

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It used to be an option for GM Diesel ...now gone. I had to send my own cable set off to help a customer out, now.