I don't know if it will save permanently but based on someone's experience that I heard it after the miner restart/reboot the issue goes back again but their issue is related to fan speed command, not on aging. So why not try to send that command again or use the aging button?

That command is automated tuning you can also manually play on the parameter like this command below


The parameter above is for frequencies I don't know if you can change them you can try to play the parameter depending on which hashboard is affected by overheating.