No one can tell you that simply based on the STV version, the unlocked versions carry the same version as locked ones in some cases. This thread may help you though - How to identify a factory unlocked US Priv and avoid AT&T unlocked units
Well my thread was really only for the -1 variants. But based on the autoloaders, it seems like the issue only matters for US variants, all others including factory unlocked -1, -3 and -4 all use the same software, even the Canadian carrier -3s. And as far as I know, Hong Kong carriers don't really do any customization so it would be same as a retail -3. Not sure about other APAC countries though.
I am trying to decide to buy a factory unlocked PRIV or AT&T carrier unlocked one. I see that the STV100-3 supports the same frequencies as my Passport. But the AT&T is much more limited - only good on AT&T in the States I presume - not overseas?Which carrier are you planning to use it on?