hd stb

Hello, i jio set top box with custom rom that i installed via tftp and turning on stb into recovery mode.. now i want to revert to original firmware; can anyone help me with how i can do this? where do i get the latest rom for the device?

TV : sony bravia 43" with sub woofer.. since last week am having problem of low volume on many channels on d2h service.. prior to this i noticed this only on repeat channels, like sony-pal, star utsav, colors risthey etc . i brushed them off as probably these channels created this way by...

I am keen to buy Den HD Set Top Box. Am in Mumbai but I guess any Box may work. Pl share box model no, pics (all sides) and what accessories you will be giving. Thanks