"I hate version 1.04. Can I go back to 1.02?" Answer: No. Sony does not provide legacy firmware files publicly, and the bootloader prevents force-downgrading. Attempting to flash an older version results in a "Version Conflict" error. The only way to revert is a hardware re-flash at a service center, which costs more than a new unit.
The screen will display the current firmware version of your recorder. Essential Companion Software
Title: How to Update Sony ICD-PX470 Firmware — Step-by-Step + Troubleshooting sony icd-px470 firmware
Use the (arrow) buttons to scroll down and select Common Settings . Press the PLAY/ENTER button.
Navigate downward until you locate or "Firmware/Version" . "I hate version 1
Elias went to the kitchen to grind some coffee. When he returned, the screen was blank. He toggled the power switch. Nothing. He held the reset button with a paperclip. Nothing. "Great," he muttered. "I bricked it."
Sony may release future firmware updates for the ICD-PX470. To stay informed, you can: Attempting to flash an older version results in
Ensure the recorder is turned on before plugging it into the USB port.