The firmware version represents a major iterative update, and "UPD" stands for Update Package —typically a .bin or .pkg file used to flash the device.
If you’d like, I can:
*Some V461 variants lack DAB+ – check the label. ucast v461 upd
Not every installation goes perfectly. Here are real-world issues reported by users and how to resolve them. The firmware version represents a major iterative update,