I know that, but I am still wondering about these phones. I know I have seen people getting updates for the J3 Luna Pro S327VL to S327VLUDU3ARC1, and I know the J7 Sky Pro S727VL is the same as J3 Luna Pro S327VL. The only difference with the J7 Sky Pro S727VL to J3 Luna Pro S327VL is J7 Sky Pro S727VL has 2GB of RAM and 1/2 inch bigger screen. So that is why I was digging for an update for the J7 Sky Pro S727VL, and I do see S727VLUDU3ARC1 on these foreign sites that want money. I thought these update should be free and open to people to download.
Even my J3 Sky SM-S320VL has never seen an update, but I see people get updates on it.
The only difference that I have seen is mine is on Straight Talk and their is on Tracfone. Tracfone and Straight Talk is the same company tho.