Factory resetting a Yaesu FT-991 transceiver involves restoring the device to its default settings, erasing any customized configurations or stored data. It is often performed to resolve technical issues, restore optimal performance, or prepare the transceiver for resale.
Performing a factory reset can be beneficial in several situations. If the transceiver is experiencing software glitches, persistent errors, or unexplained behavior, resetting it to factory defaults can potentially resolve these issues by eliminating any corrupted settings or software conflicts. Additionally, if the transceiver has been modified with custom configurations or experimental settings that have led to undesirable results, a factory reset can restore the device to a known and stable state.