Yaesu strictly requires updating the DISPLAY firmware first, followed by the MAIN , DSP , and SDR firmware.
50 Ohms (unbalanced), with the internal tuner capable of handling 16.7–150 Ohms on HF. Troubleshooting and Firmware Updates yaesu ft710 service manual
Use the [FUNC] → [EXTENSION SETTING] → [SOFTWARE VERSION] menu to see your current firmware. Yaesu strictly requires updating the DISPLAY firmware first,
Technicians using the manual often look for these critical reference values: DC 13.8V ± 15% (Negative Ground). followed by the MAIN