Device firmware summary
FTVDB catalogs 40 public firmware records for Kindle Paperwhite 4 (2018). The device is identified
by model PW4-2018 and by firmware package
com.lab126.eink.moonshine.os. These identifiers help distinguish hardware that may have
similar retail names but receives a different firmware line.
The catalog currently spans Nov 1, 2018 through Jun 5, 2026. The latest version in the ordered list is
5.18.1.1.1, with build code 4769680023 and a recorded date of Jun 5, 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.