Akt_s4_2023-01-14_update.zip -

The file AKT_S4_2023-01-14_update.zip is a firmware package for AKT S4 automotive head units, typically containing a system.img , boot.img , and a update.cfg configuration file. The update, dated January 14, 2023, is installed by placing the zipped file in the root of a FAT32 USB drive and selecting the update option within the system settings.