⚠️ Do not mix loads files. A 7961 trying to load SIP41 firmware will soft-brick until a factory reset.
Early SIP loads had inconsistent performance with G.722 wideband audio. Version 8.5.4 refined the codec negotiation logic, reducing one-way audio issues and improving voice quality when connected to newer gateways. cmterm 7941 7961 sip 8 5 4 zipl
To ensure a clean installation, it is often best to reset the device: Unplug the power. Plug it back in while holding the key. When the light strips on the side flash, let go of # . Enter the sequence: 123456789*0# . ⚠️ Do not mix loads files