Device firmware summary
FTVDB catalogs 26 public firmware records for Kindle Basic 4 (2022). The device is identified
by model BASIC4-2022 and by firmware package
com.lab126.eink.cava.os. These identifiers help distinguish hardware that may have
similar retail names but receives a different firmware line.
The catalog currently spans Oct 7, 2022 through Apr 20, 2026. The latest version in the ordered list is
5.19.2.0.1, with build code 4740590001 and a recorded date of Apr 20, 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.