Wrong.
Firmware updates and paid features are two different things. If you want a paid feature, like NXDN DMR Provoice or Waterfall, and I believe Extreme for Home Patrol, you need to register to make the purchase.
To see any and all firmware updates available for your scanner, you do not need to register. You can go to any of the the scanner firmware pages (as
@cg posted) and see what is available.
That only applies to scanners that use Sentinel. Just saying cause thread title mentions scanners that do not use Sentinel.