Txnr646 Firmware Update 2021 __hot__ Jun 2026

: Onkyo’s official firmware download pages for the TX-NR646 went offline in late 2022 after the company’s restructuring. As of 2024, the 2021 firmware files are only available via third-party archives (e.g., Internet Archive’s Wayback Machine or user-shared Google Drive links). Proceed with caution and verify MD5 checksums when possible.

Note: Onkyo has not released any official firmware for the TX-NR646 after 2021, meaning this is the last available update. txnr646 firmware update 2021