A: No. Speaker calibration settings are preserved. However, network and HDMI settings may reset to factory defaults.
Onkyo strongly recommended performing the update via USB flash drive for the NR646 in 2021, as the over-the-network (internet) update servers for this legacy model were becoming unreliable. txnr646 firmware update 2021
USB Method (Recommended):
Network Update (Less stable):
Perhaps the most strategic element of the updates A: No
A: You can, but you remain vulnerable to HDMI handshake issues with newer devices and network security flaws. It’s a low-risk update with high benefit. Network Update (Less stable): Perhaps the most strategic
When performing the txnr646 firmware update 2021, you will land on one specific version depending on when you downloaded it. Onkyo released two minor revisions in 2021: