SamyGO

You came in the right place!
But...
I could not find any firmware for your player , but i belive you should have Firenze firmware like on BD-Dxxx series which is rooted already
You could try to enter Service menu (read topics related to BD-D series) and make a picture of first menu (pictures of all menu-s are welcome ) and post them here.Then we could see what can be done or not...
Web browser not available (yet)...
Julian

B-FIRHTBEUC...for sure is firenze platform and has Arm .
Check sequenz "info-menu-mute-power" to take you in Service menu
Take pictures of menus/submenus to see what else can do...

Did your device have wireless (network) remote option in menu(settings) ?

Ok... Then download RuSamsung comunicator ,install on a PC ,run, confirm on HT-D when it will detect pc, test-it, then press INFO on phisycal remote and then Factory on rusamsung comunicator and ...thats the Service Menu.
Be carefful move cursor in menu-s only by UP/DOWN key's left/right will change values !!! make pictures of all menu/submenus (this will help you later when you will make some mistake...)

Firenze platform (like my BD model)have plenty of options in SM like 3D conversion, CD-Ripping .....depend on you to explore or not...