Based on your request for 2021 new software, here are relevant firmware/channel file options often used for this hardware: 1506T V1.0-OTP-0 Software Options (2021/Relevant)
: Updated keys (Biss, PowerVu, Tandberg) to unlock encrypted channels. Installation Instructions Dvbs-1506t-v1.0-otp-0 New Software 2021
Includes GPRS support and DSCAM for card sharing. Based on your request for 2021 new software,