Firmware for these specific regional brands (like NOA, which was prominent in Croatia) is often hosted on specialized technician portals or repair forums:
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: The firmware is designed for a 1920x1080 (FHD) resolution display with 1GB RAM and 8GB ROM .
: The "part05.rar" extension indicates this is one part of a split archive . You will need all previous parts (part01 through part04) in the same folder to successfully extract the final .pkg or .bin firmware file. Where to Find it
: Sites like Apdats and SofturiTV list this exact 6A358 firmware for various TV brands.