. Marshall speaker software/firmware issue? Update & fix at Solution Hub Tech. Free pick & drop in Delhi NCR. Call: +91-9711-330-329. Address: Solution Hub Tech, First Floor Block No-4, Flat-24, near Central Opticals Shop, Shankar Market, Connaught Lane, Connaught Place, New Delhi, Delhi 110001. Software experts – Saket, Malviya Nagar, Panchsheel & all Delhi areas served! https://solutionhubtech.com/marshall-repair-in-delhi.html