Old revisions Add to book Export to PDF Fold/unfold all Book Creator Add this page to your book Book Creator Remove this page from your book Manage book (0 page(s)) Help This is an old revision of the document! Version 1.4.2 (V1.4.2_211018) Release 2021-10-22 Bug fixes 1. When upgrading firmware from v1.1.0 or earlier to v1.4.1, the device failed and could not be recovered. (Affects version: v1.1.0 or earlier)