Device firmware summary
FTVDB catalogs 7 public firmware records for Fire TV Stick 4K Max - 2nd Gen (2023). The device is identified
by model AFTKRT and by firmware package
com.amazon.karat.android.os. These identifiers help distinguish hardware that may have
similar retail names but receives a different firmware line.
The catalog currently spans Nov 26, 2025 through Aug 17, 2026. The latest version in the ordered list is
Fire OS 8.1.8.2 (RS8182/3811), with build code 32548774788 and a recorded date of Aug 17, 2026.
Compare the version label, numeric build code, and recorded date in the table below. Recorded dates describe the public source metadata in this catalog and are not an installation recommendation or a guarantee that an update applies to every device.