Update 2021: Txnr646 Firmware
: Download the zipped firmware from the Onkyo Support Site .
By 2021, the TX-NR646 was six years old. Early firmware versions (from 2015–2018) suffered from three notorious issues: txnr646 firmware update 2021
This is the preferred method if your TX-NR646 has never been updated or if the network update fails. : Download the zipped firmware from the Onkyo Support Site
This is the simplest method if your receiver is connected to the internet. : Press the [SETTING/GEAR] button on your remote. txnr646 firmware update 2021
Here is a helpful guide regarding the firmware updates for this receiver, specifically focusing on the 2021 timeframe and the overall status of the unit.
No new security or feature updates were included.








