The filename itself contains a wealth of information. Let’s break it down:
It sounds like you’re referencing a or a feature identifier related to a Tenda device firmware upgrade — likely v50749en_tenda_upgrade_upd.bin or something similar. v50749en tenda upgrade upd
can introduce new features like improved bandwidth control or more stable dual-band management. Step-by-Step Upgrade Process The filename itself contains a wealth of information