Epson Sure Color SC-P800, SC-P807, PX3V Firmware - OR18HC version

General
1

I downloaded the Epson Sure Color SC-P800 and PX3V firmware (OR18HC version) from 2Manuels.com in a windows OS environment and tried but could not downgrade.
The printer freezes or does not recognize the printer during the upload process.
What should I do?

3

It turns out that it didn’t work because I apparently misstepped the steps.
The procedure written on the website is not worded well enough and I would get the procedure wrong or misunderstand it.
This has prompted me to create a new procedure.
I would like to announce the firmware reset procedure if people want to know.