Fixed an issue where the new HW radio could not decode digital communications, DCS and Analog trunking is not working in range of 171.2250 – 173.9875MHz.. what in the heck is a hw radio . never heard of that
It's referring to newer production scanners that are using slightly different board level components due to chip shortages. Poorly worded, should've read more like "Fixed an issue in recently manufactured models with updated hardware components (2021 and newer)..."
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As donc13 mentions above, when new firmware is released you will hear about it here in the forums.
You can also check Uniden's BCD996P2 page here for firmware updates, and the changes contained in the newly released version (the link for the BC_VUP3 Firmware Updater is also on this page) :