Absolutely none of the 635s got updated to Denim at least in USA as of today
Availability in North America - Microsoft - Global
Lumia 635 Country variant Not available yet Not available yet Not available yet
Lumia 635 AT&T Not available yet Not available yet Not available yet
Lumia 635 Cricket Not available yet Not available yet Not available yet
Lumia 635 Metro PCS Not available yet Not available yet Not available yet
Lumia 635 Sprint Not available yet Not available yet Not available yet
Lumia 635 T-Mobile Cyan 8.10.12400.899 01061.00074.14391.37104
Available in USA (other Lumia's)...
Lumia 822 Verizon Denim 8.10.14203.306 3051.50009.1446.0077
Lumia 928 Verizon Denim 8.10.14203.306 3051.50009.1446.0000
Lumia Icon Verizon Denim 8.10.14219.341 02540.00019.15024.38022
This Post is in error about OP getting Denim he did not on his 635 except in his mind...move on.
Basically what happened is OP got updated (with his little W10TP trick in video) to 8.1 GDR 1 not Denim as his title claims..he posted a screenshot of Equalizer from January tying to trick us that he was successful in getting Denim.(that post got pulled)
The video is good at showing how a newbie should go about signing op for W10MTP for that I give OP kudos