First off, you need to obtain a retail model Dune HD-TV 102w (with 'w' postfix), this is the only model which has appropriate firmware for getting root access. Download duneservicetelnetd.dsf, copy it to usb-flash drive and insert into Dune.
Full guides for Download and update android firmware on you device dune hd b1 firmware
Upgrade to newest version android firmware on you device, dune hd b1 firmware update you current version android firmware to latest version, download newest android firmware.
dune hd b1 firmware
New release software for android device. Download and update android firmware driver latest version:
Update android firmware: 02.01.2019
Country: All
Download Size: 86 MB
Current version: 6.09
Language pack: English (North America), Chinese, Germany
Download android firmware now!
Download and update android firmware for products: dune hd smart d1 firmware, polsky tv firmware dune, dune hd tv 101 firmware, dune 102 firmware downgrade, dune smart h1 firmware, .